Ported gt40p flow numbers. The smaller valve size is more effective.

Ported gt40p flow numbers Apr 24, 2008 · Just the thread I needed. Feb 2, 2013 · BadBoss got 250/200 cfm's from porting and installing 1. 600" lift with the stock valve size. Sep 15, 2007 · Well I'll start off and say, Though the numbers displayed here are not awe inspiring, they are not exactly bad. 333RWHP & 325RWtQ on a mustang Dyno. I can't wait to get to a dyno to see the torque and HP curve. im shooting for roughly 180-200 cfm's at . GT40 heads currently being ported, TFS valve springs, 1. Mar 17, 2004 · The AFR 185 flow 236cfm @28" of H20 the GT40P will Flow 221cfm @ 28" of H20. 400-. These heads when flowed after porting went 230/167cfm @. 0 Explorer with ported GT40P heads milled . Really need to reshape the ports, and minor shaping on the chamber. 8 Engine Tech Nov 30, 2004 · Dark Mode; Light Mode Feb 13, 2015 · Porting GT40p exhaust. 550 spring lift. pinn. Jump to Latest 29K views 7 replies 4 participants last post by tom. This is in a daily driven car. P heads sell all the time for 300 bucks or so, a port job on a set of E7 heads is gonna run you 600-800 bucks. 5" power pipe Pro-m 80 Under drive pullys Countour electric fan Jun 21, 2006 · Tmoss is the Intake porting guy! I think he may know a little better than you, the complex workings of the ford intake manifolds. Jun 14, 2005 · flow numbers alone mean nothing, there are many heads that flow less than others yet at low and mid lift flow much more and port velocity and swirl come into play as well. Jun 21, 2006 · Tmoss is the Intake porting guy! I think he may know a little better than you, the complex workings of the ford intake manifolds. The results are below: GT40p heads peak horsepower was 310@5000 with 363ft/lbs@3500 The worked 351 heads showed peak power of 328@5000 and 380ft/lbs@3500 Jan 23, 2005 · GT40P castings have 59 to 61cc cc chambers ( factory tolerances ). 300 lift, if i do that then i will be super duper happy, im not shooting for high flow at anything over . Jan 17, 2012 · They look outstanding and performed well on a carbed 351 they came off of(no dyno,flow or track #s hence the thread) They are set up for 3/8" stud rockers and have 1. There are a few pics on this page. The 351 head is the old fashion method, while they improve upon port and valve size they just don't improve the burn. 08 gears, Vr Jr on my 84 Mustang. Here is a great review, GT-40P Heads - 5. Apr 25, 2003 · GT40P Porting ideas? Jump to Latest Follow 2K views 9 replies 8 participants last post by Aug 9, 2005 · Old GT40P Combo: 271rwhp & 303rwtq New Combo: 308 rwhp 315tq N/A-Neil Erickson (Midwest Induction) race ported GT40P's-Neil Erickson Spec'd Custom Cam-Ported Edelbrock RPM Intake-Tweecer RT + Zeitronix WB-NOS 05115 kit with 150 shot jets Tons of other mods. When I was 18 back in 2001 I ported the 289 heads im running now which made 270rwhp and will be porting a set of 69 351w heads for the same motor. 331 Cubic Inch Stroker Motor TrickFlow Stage I Cam GT40P Heads (With better springs) Cobra Intake or other MAF Upgrade with 30 lb/hr injectors 70 MM TB. 100 increments up to . 54 exhaust valve, Buddy Rawls cam, Vic. The GT40P has angled spark plugs, so it's probably going to be interesting. The GT40X and GT40Y are aluminum and you might as well run ported 302 heads and save the cash, the aluminum GT40s suck, and the sealing surface isn't that thick, they've been known to blow headgaskets. 2 on the 1/8mile. Or, the porting is good, and other flow modifiers were used further up the port where we can't see. Typically, smaller intake ports will help to create more torque, and larger intake ports will create more horsepower. Just looking for a little more power to have fun. Gt-40 upper with t moss ported lower @560-570/223-232 /114* cam, 65mm throttle body, 1. Obviously you would not run a . CHECK IT OUT! Here are some numbers after porting your GT 40P head. 500 beat every head in article but the AFRs and they only edge out these by a little. Jump to Latest Port-O-Sonic, 700 cfm DP Holley, 289 '66, 1. Nov 28, 2021 · In any case, the early 351w stock intake port design was nothing to be excited about. Its very nice being at the track with iron heads you ported yourself and people get surprised that's all it has with an 8. Dec 12, 2002 · The stock flow numbers were taken from http://www. Stock AFR EnforcerDavid ported gt40' About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Another set of stage 2 ported gt40 heads. Non p flowed better at top end but only slightly. 60 stainless valves with hardend seats and good springs. Exhaust is significantly different, but you probably know that already. Nov 27, 2021 · In any case, the early 351w stock intake port design was nothing to be excited about. 200 -. Jr. I have a bare GT40P head casting at Dave Storlien (2nd place EM challenge) He has'nt ported a P yet, but he looked over the casting. Since the GT-40P heads aren’t designed for optimum flow above . Fully ported with the Trick Flow Spring kit, OE style flat top pistons with 1605 compression height and the XE264XR-14 cam with 512 lift and 1. The exhuast ports on the GT40P heads are revised and more efficient than the regular GT40 castings. The intake ports are the same as far as I can tell. S. Good exhaust flow, but the intake seems a little weak. 500 207 int, 162 ext. 500 205 int, 176 ext. The GT40P use 1. of all the runners. 55s, FMS springs, Megabite control arms. Ford Head Flow Data and Specs THERMACTOR BUMPS IN EXHAUST PORTS – The GT40p heads do not have any. Springs are good for . Dec 1, 1999 · See the results and comparisons of a flow test on small-block engine heads, only on Mustang & Fords Magazine. Here is the combo Rebuilt long block (. 1969 Convertible field find (450hp spaghetti noodle) Dec 23, 2021 · We have a long boring techy video with 5 different ports getting their flow on. which is plenty suffient for a mild build Well stock the difference is pretty huge. I don't have a flow sheet but these things have been opened up pretty good. Differences between GT40 and GT40P? There are some differences between the GT40 and GT40P cylinder heads. 73 Gears Apr 17, 2021 · Here's a link to a comparison of flow numbers from several heads. 030, Harland sharp 1. Jan 15, 2003 · Non P heads have slightly larger valves, but due to the P heads design with plug location and port design the larger valves are not necesssary with the P heads. Blend the port bowls with the valve throats. 600 lift. Aug 4, 2014 · The production Ford GT40P iron head offers decent flow as a stocker, but it needs a few modifications in order to accommodate more valve lift. , 650 dp, and 1 5/8 longtubes on a well used stock shortblock. I'd just do the following: 1. 60 valves in. Feb 21, 2006 · I ported mine last summer/fall but didn't use larger valves. Maybe you could try working over your E7's first. Jan 1, 2004 · Thanks Greg. I'm not going to use them, they are just sitting in my garage. 58cc gave me approx. 5. The GT40P heads are good right out of the box so you don't need to do much to them. I've seen Trick Flow H/C/Is make less than me and more than me. Intake Port. im worried about the 18mm spark plug too, i dont know if anyone stocks them? Sep 24, 2003 · 1979 Indy 500 Pace Car - Ported GT40P heads, Crane 1. 800 lift cam but still impressive. News. Nov 29, 2012 · Home ported GT40p heads w/ tfs spring kit, GT40 Tubular intake (with lower and spacer), TFS stage 1 cam, bbk 70mm throttle body, 73mm C&L Mass air converted, tb spacer Misc: power pullies, electric fan, smog pump bypass, hooker shorty unequal headers, stock injectors, Hpipe w/ flowmasters, and K&N drop in w/ silencer delete. 60 valves, guy tate increased his low lift flow from jumping to larger valves. 500 on either intake or exhaust, just looking for great . the intake ports are larger than the gt40p's but the exhaust port is smaller. Made 330 rwhp and same torque numbers. the stock exhaust port has a huge thermactor bump in it,which looks basically like a giant zit growing from the roof of the port. May 3, 2010 · Price is very negotiable, and yes I'll ship em if the buyer pays for it, or we work something out. jpg GT40P Identification: 4 bar side. 1. Nov 17, 2012 · Im almost done porting one intake and exhaust and going to go take them to get flow tested and will post the numbers of the port work as a starting point. Sep 25, 2002 · I've ported GT40P ( mildy mind you ) and I've worked on a set of GT40 regular irons too. Feb 22, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright For a while you guys have been asking for a flow video of our Stage 2 ported gt40p heads and although we are extremely busy porting and completing orders we Jul 16, 2003 · I ported a set for a Street Warrior guy, and we put 1. the exhaust port is designed better and is more free flowing than stock heads,as well as the intake ports. 2. Nov 26, 2002 · Windsor Tech Forums. Mar 21, 2006 · Any flow bench chart will illustrate this. HOW MUCH PORTING/AIR FLOW IS BEST FOR MY SETUP The various components of an engine work together as a package. II Intake, Trick Flow 11R Heads. Nov 13, 2012 · '88 Mercedes 300CE w/ AMG bodykit getting a Ford 5. 10 rearend Oh and a Mallory Comp 9000 unilite distributer and Mallory HYFIRE DIGITAL 6 ignition and Mac 351 swap 302man- Tim of Donathen & Son motorsports did the porting :cool: I was going to be heavily involved in the porting, but I went to vegas while my heads were at his house, and when I came back, they were done! Nov 8, 2016 · I forgot to thank you for your detailed reply in another thread regarding tips on porting gt40p heads. 500, and the overall flow of either head doesn’t support the kind of flow you’d expect to get from a wild cam combo, the high lift flow isn’t as important as it would be with a more aggressive combination. 6 Roller rockers, TFS Stage 1 cam, MSD 6A, Holley 650 4150 carb, Edelbrock Performer RPM intake, FRPP Shorty "P" headers, Dr Gas X-pipe, Flowmasters, 8. I used stock sized GT40P valves from Fearra, an new spring kit from Crane (beehive's), machined them for studs, and whent through the exhaust track pretty heavily. Jul 5, 2011 · What do you guys think this setup would put to the ground? I know the average is 260HP roughly on the 302 based builds. They fit with ease, no modifications needed, and I went with the fordracing GT40p headers. Low and mid lift flow was up over 40cfm over stock. Dec 10, 2002 · I made a post a few weeks ago showing the pictures of the heads after porting, and they were just flowed. Jan 3, 2017 · You can email him at: mosstpsa@sbcglobal. There was plenty of piston to valve clearance. Cam recommendations? Midnight2V; Jan 18, 2010; SN95 4. Dec 10, 2002 · I made a post a few weeks ago showing the pictures of the heads after porting, and they were just flowed. Smoothen the short side radii and the bumps in the transition from port bowls to runners. 6L Mustang Tech; Replies 3 Mar 22, 2006 · GT40P head flow numbers. Curiosity got me so I made some time to port one hole. Ported GT40P flow numbers, and pictures May 16, 2024 · When you’re looking at cylinder heads, you’re presented with a lot of numbers that are meant to help you figure out if the flow will be adequate for your vehicle. The downside of the GT40P is that the spark plug holes are at an awkward angle and they special headers to fit. Oct 8, 2020 · Here's a link to a comparison of flow numbers from several heads. 25 compression. May 29, 2019 · GT40P's come only from mid-1997 and up Explorer/Mountaineer SUV models, with part #F77E-AA. 8 Engine Tech. 7 cobra rr's, BBK Ceramic Shorty Headers, BBK 70mm TB and spacer, PRO-M 75mm MAF, MAC Underdrive pulley set, Trick Flow Street Burner Intake, AOD transmission with 4r70w internals w/ Silverfox Valve Dec 10, 2007 · there used to be a company that sold gt40p heads already ported and such for cheap central coast mustnag unfortunatley out of buisness now the mustang guys seem to be hitting NA 300rwhp pretty effectivley with a cam and intake combo on the 302's all while breathing through gt40p's a list of flow numbers for a bunch of heads Mar 11, 2008 · as far as I know the Explorer GT40P and cobra GT40 heads are flowing almost identical intake port and exhaust ports, the GT40P has about 10% more flow and therefore makes more HP. 500" lift at 28 inches of water, all numbers are cfm 69 351W HEAD Intake 181 Exhaust 114 GT40 HEAD Intake 192 Exhaust 128 GT40P HEAD Intake 196 Exhaust 139 remember that the P head has a slightly different exhaust flange shape and headers must state they fit the P head to work. 73's, Eibach Springs, Hotchkis Control Arms, FRPP Alumuinum D/S. Buyer's Guide three-angle valve jobs, and port matching, all in the Jun 4, 2015 · Just bigger is not necessarily better. Reach my goal of 300+rwhp NA, and now I'm aiming Dec 4, 2009 · there is no "blockage" in the exhaust port. Nov 5, 2023 · Here is my example 347ci 27 year old ported edelbrock preformer heads. 4. in fact. 6 rockers. 500 lift. Good lightly ported E7's can flow 170cfm or so. He wants to mill the intake along with the heads for best port match to the milled heads. Oct 28, 2008 · stock E7s flow ~160cfm Ported correctly they will flow ~215-220cfm GT40/GT40P flow ~190cfm Ported correctly GT40s flow ~230cfm Trick Flows flow ~250cfm power gain depends on how well the engine parts take advantage of the added flow potential. I didn't paint these things so go easy on me. That said, I have had a set of TFS heads and stg 1 cam sitting in my closet for about 2 years now. Oct 10, 2013 · Flow numbers are pretty much indon't have the full range numbers in hand but he said we are at 215 intake & 168 exhaust at . 300 and, with some porting, E7's flowing as well as stock GT-40's. ported GT40P pictures Apr 10, 2003 · Windsor Tech Forums. net Porting a stock intake IMHO is a waste of time unless you really want the stock look. GT40 Identification: 3 bar side. net/~nascar/fordhead. I run a set of home ported GT40 irons, stock cobra cam and port matched cobra intake on my 306. Run with a Cobra or Explorer intake, and the usual bolt ons with 3. You have to understand that no matter how small the port is and how ####ty it flows, with enough pressure, it will flow great! you could get 300 cfm through a straw if you pull hard enough. If you're not satisfied you can do the switch to the GT-40's. Feb 26, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Feb 24, 2013 · I've seen some flow number showing the E7's flowing in stock form a little better at lower valve lifts, like . 500 lift and i will be doing some chamber work like unshrouding the valve and blending in the top cut into the chamber Feb 12, 2020 · Flowing some customers stage 2 ported gt40 heads. Oct 15, 2003 · The average flow numbers taken at . 6 roller rockers,AFM N-41 cam,AED HO Holley 650DP and Purestreet ported and extrude honed Weiand stealth intake c4(need c4 part's) tranny and 4. Been trying to make the most improvement to the low to mid lift area. Unported they are said to add 30HP over stock E7's. He spent a minimal amount of time to get these numbers. 94-1. Oct 11, 2001 · There was a site I could send you to for stock flow numbers, but now you have to purchase a subscription to view the comparison. Ported H. 8/3. com for the Gt-40P heads. 0. im sure there are flow numbers somewhere on the interweb. It has the E7, 289, 351, and GT40P heads all tested. 550. 65 mustang coupe 5. 46 Nov 25, 2002 · 90 Mazda RX7 with 2000 5. 6 Rockers, 24 lb. Not the same as power numbers, but it's something. 3. 8 Engine Tech Jan 3, 2017 · You can email him at: mosstpsa@sbcglobal. 940 Nov 26, 2008 · Flownumbers for three heads at . Flow numbers are similar, but in un-ported form the GT40P should make slightly more power depending on your combination. We provide to the customer before and after results on all of the part Oct 1, 2006 · My plan is to port the heads and test the flow rate as I go. 6. and for ported heads from @. injectors, 190 LPH Fuel Pump, BBK 70mm TB, BBK Headers, Off-road H, Flowmasters, 3. 608. 9. Aug 27, 2007 · Notice how it's noted that these numbers hold true at 28" of H20. the valves are also larger and the chamber is smaller. 8 Engine Tech May 17, 2003 · IS the Trick Flow Stage 1 cam too big for GT40P heads? I plan on getting some GT40P's and just clean 'em up do a valve job and new springs. Also both heads have a . 26+ hours in porting? Holy crap. Around 12 yrs ago I had mildly ported gt40p's (exhaust ports only short turns and bowl work) with a 1. huge flow restirction. This guy is a head porting wizzard and I highly recommend him. My qustion is would these outperform a gt40p head on a stock bottom end car with gt40 intake. Not sure what the AFRs' will flow ported and polished. to @. htm I would guess that the small differences in the low-lift flow could be accounted for in small testing changes between the two environment and flow benches. Thread New Ported SVO Flow numbers. I would like to see the flow rate Standard Dev. Aug 24, 2024 · Heads are done! Oct 13, 2003 · Windsor Tech Forums. , Centerforce DF kit, 2. from LT's, to 10-1/2" bullits. Trim the valve guide bosses (you've done a nice job on that one). May 5, 2006 · Wow, they do not flow all that great stock. I picked up mine with the upper and lower intake for 300 bucks, and my gt40p heads came with CHP springs. . The FR500's have some nice low lift flow numbers, but don't out shine the 03-04 cobra heads up top. Pro-comp 190'sPorted AFR enforcer. 030) with Gt40p heads (no porting) Trickflow (TFS) stage 1 cam with stock (non roller) rocker arms/springs Trickflow street heat intake Mac cold air intake Underdrive pullies BBK shorty headers Oct 1, 2009 · Well, if your on a budget like many of us, GT40P heads are the way to go. Came across a good site on stangpro. 56 gears Oct 13, 2003 · Windsor Tech Forums. The heads were milled a couple thousand but the block deck was stock. 450 lift range. This is just a video of our results. Dec 22, 2005 · port volume has more to do with velocity then flow. 0 Mustang & Super Fords Magazine Windsor Tech Forums. moss1949 May 29, 2007 Jan 6, 2005 · The seen different numbers for stock GT-40P's from @. FRPP Shorties O / R H Oct 29, 2015 · I used GT40P heads on my V8 Ranger. If you are looking for max peak horsepower, go with the TFS heads. Jul 17, 2014 · $200 for bigger valves AND port work? Normally the answer is do not port the iron heads, but at that price when you already need the work, I say go for it! I hope he knows good valve head and seat angles for great flow. Feb 7, 2004 · gt40p flow numbers question. I fully understand about the valve shrouding situation, the cam im using has under . 840 1. Your stock E7's a little more than 150cfm/115cfm. They are now redone and not fully ported but they flow 235 @ . Ported and polished the GT40p heads should flow around 255 cfm or so I am told by the shop selling these heads. It is an unknown. There was a site I could send you to for stock flow numbers, but now you have to purchase a subscription to view the comparison. 500 flow. production numbers Nov 20, 2015 · Ported gt40p heads Manley stainless valves, with gt40 larger exhaust valves Double valve springs matched to cam Hardened pushrods measured to length Scorpion 1. 500 185 int, 126 ext. Nov 20, 2015 · Ported gt40p heads Manley stainless valves, with gt40 larger exhaust valves Double valve springs matched to cam Hardened pushrods measured to length Scorpion 1. I'm not dissing AFR's at all, I just think that the potential of the GT40P head is brushed under the carpet because of two reasons: 1) it's an iron head with smaller valves, and 2) because it's a Ford product. Used to chuckle at guys with aftermarket heads, gears and bigger TBs, expensive tuning. Good info. Here are the results the stock flow numbers were Aug 2, 2009 · The differences are that the service you're paying for is for cheater heads, They do a small amount of porting and then add the casting lines back in the ports followed by an acid etch to cover up the port work. Sep 30, 2010 · There is no advantage for the GT40 iron's until above . The lower was ported by tmoss, and looks like golf balls would flow through it. Feb 13, 2015 · Porting GT40p exhaust. Take the twisted wedge head, it has a small intake port 170 cc compared to an afr 185 yet flow numbers up to 500 lift are almost the same, on a 347 stroker the TW head only Jan 20, 2011 · Wise man. Feb 21, 2012 · The GT40P's are the way to go, similar to what the Chevy guys see with Vortecs, the GT40P will add 20 to 40 horses depending on the cam, more aggressive cams take better advantage of these heads. 5 exhuast w/ turndowns, T5 w/ the death whine, 4. With the exhaust, i opened up the short side wall turn to the port and almost made that wall a straight shot down the port and also the longside wall where the curve is about one inch in the May 24, 2007 · ported gt40p heads. Reviews. 2s with 3. 7 RR, Richmond Gear 4+1 Trans. 84 intake and 1. I would love to see you do a home porting job of an upper/lower intake and then flow bench it. 5" power pipe Pro-m 80 Under drive pullys Countour electric fan Nov 9, 2016 · Impressive numbers, however I'm curious how much power they would have made without porting the heads. Feb 24, 2008 · I have had great luck running DOOE heads with a mild port turned 12. 94/1. Nov 18, 2012 · I did that work to the intake side because im desperatly trying to raise my flow numbers down low. I have the flow numbers between the 2 somewhere, but what I remember is, P flowed better at low and mid range. I don't have flow numbers though. 500 lift and beat stock air flow at every point starting at . 73's. Mar 17, 2002 · 84 GT - fresh '88 HO bottom end - reversed pistons, Comp XE274H flat tappet, ported GT40P's, ported Xcelerator intake, 650dp, ported FRPP shorties, 2. The Exploder intake I have is ported. 6 rockers Anderson N-41 cam 24lb injectors T-moss ported explorer intake manifold 70mm egr spacer and throttle body 3. Feb 4, 2014 · The link below contains the flow rates of several OEM and aftermarket heads in both unported [stock]and ported form. jpg . jpg: 'GT40P' stamp. The Explorer intake is a better solution as it sounds like this is a long time budget project and bolting them on with a 70mm throttle body and larger MAF could net you upwards of 15+hp plus still looks stock to a 5. 1 lift. Fully ported, with the bigger valves, they flowed around 250/210@. i was reading on another boards and this guy said "My stock heads that i home ported out flowed GT-40 X heads. jpg: 'GT' stamp. 0/5. ect. Unless you can establish they are ported by a reasonably knowledgeable person with flow or power numbers to back it up, I'd not add any value for the porting. 0/ t5z Mar 16, 2004 · He sent me some preliminary porting numbers on the GT40P intake port this morning. It is worth it, but a cartridge roll want help any. Then i would like to compare that to Tmoss'. production numbers Aug 27, 2007 · The GT40 is a straight fit and a good head. 200-. The GT-40p's flow about 195cfm/140cfm out of the box. he seems to think that going to larger exhaust Mar 27, 2008 · Also on the GT40 head flow chart on the very last ported listing, the exhaust flow listing in the lower lifts is obviously wrong the exhaust port will never outflow an intake port. Aug 31, 2013 · 1991 GT: Trick Flow Track Heat Heads, Trick Flow Stage 1 cam, Ported GT40 Intake, 1. If the GT40P head has an early 351w intake port then it is only marginally better in terms of flow than 65 289 head, but the GT40P flow numbers seem to indicate that the port was an improvement over the early 351w port. Apr 8, 2008 · Properly ported E7 heads flow better than stock GT40 heads, but if you're on a budget, you'll be happier with GT40 or GT40p heads for your dollar spent. Check this out for some awesome ported GT40 numbers. The smaller valve size is more effective. Probably why they do not make killer numbers N/A unitl ported. 0 HO motor & AOD conversion Build in progress, '87 HO mystery cam, block, and lower end. You will have to do a good port job, really open the bowls up, and unshroud the valve. 500 196 int, 139 ext. 5/8” shorty headers, vortech v3si @12PSI Dec 2, 2002 · Ported and polished GT40P heads will run right with box stock AFR's as long as the right cam is used. Slover's Porting Service milled off the original Mar 7, 2003 · I used the ported 351w with large valve flow numbers from the previously mentioned article and I used the stock GT40P numbers from the same article. Best at the track so far is 12. xfmzzu mmmpgq ujv gswno rzqu yzab geydk uckxonsi keb nhejq lauizpa kvgt libe ezrrow wwezvw