GT40 heads

[sinful rides]

As the title says looking for a pair of GT40 heads. Prefer non P heads but let me know if you have any for sale.

Also did these heads come on anything other than cobra's and v8 explorers?

[Killercanary]

They also came from the 1st gen lightning and the '95 Cobra R. After 97-1/2 the explorers and mercury mountaineers had the GT40P's. If I had to choose between the two I'd run the GT40P's personally.

Here's some GT40's for sale:
http://www.superstallions.com/forum/tm.aspx?m=158401

[sinful rides]

I'd run the p's also but i've read you need special headers for them. What will work with the p heads?

[jaa55]

I used FMS shortys, all fords headers are made to work with the Ps now. i think any long tube will get the job done. i also have a set of equal lengths that look like they might have worked but they were getting thin so i didnt bother trying them

[White5.0]

I'd run the p's also but i've read you need special headers for them. What will work with the p heads?

im using mac shorties with mine but i had to pound the #3 and #7 (i think) tubes just slightly so i could get the plug boots on. also had to use wires with 90 degree boots.

your best bet is to use fms shorties, i hear nothing but good things about them with P heads.



here is everything you'll need to know: http://forums.corral.net/forums/showthread.php?t=1014187

[TJH64]

Are you planning on using these heads on the 408 you are planning to build, which you alluded to in your other thread?? :no:

[sinful rides]

Thats what I was planning with a port and polish and bigger valves. Am I making a bad choice with these?

[White5.0]

Thats what I was planning with a port and polish and bigger valves. Am I making a bad choice with these?

putting them on a 408!?


dont do it!:no:

[sinful rides]

What heads would you guys recomend. I had Trick Flows and they broke on me. I'd like to stay with irons with a 61cc chamber or bigger. Also I'll be running boost also.

[Killercanary]

My only choice for an engine that large would be a set of AFR 205/225's. Why stick with Iron, especially if your putting a heavier windsor block up front and a heavy supercharger? Aluminum can be repaired too if something goes bad.

Gt40's on that setup... YIKES! That's not a good idea.

[thebreeze72]

I HAVE A PERFECT INEXSPENSIVE IRON HEAD FOR YOUR 408 ! I HAVE A SET OF COMPLETE N351 CAST IRON FORD MOTORSPORT HEADS THAT ARE MILDLY PORTED AND CUT TO 60CC CHAMBER S/S 2.02X1.60 VALVES ALSO A SET OF 1.6 YELLA TERRA SHAFT ROCKERS LIKE NEW $1200.00 TAKES EVERYTHING MAYBE GOOD SET OF PUSHRODS ETC. ALSO BUT I DON'T KNOW YOUR COMBO ! IF YOU WANT ALUMINUM HEADS HOW ABOUT A SET OF BRODIX TRACK 1'S SET UP FOR MECH. ROLLER 2.08X1.60 S/S VALVES .700 LIFT SPRINGS 54CC CHAMBERS AND W/ T&D 1.7 SHAFT MOUNT ROCKERS AS IS $1200.00 CALL DAVE 724-880-4580 :thmbsup:

[yeahloh95]

x2 on the afr's

[White5.0]

get some AFR 225's

[sinful rides]

I did a comparison against a few heads. Trickflow Brodix AFR Dart and Racing Head Service on Summits site. I first threw out Trickflow and Dart because of price. The Brodix heads seam to be the smallest of the heads and $1600. So RHS is 10cc smaller on the intake 14cc smaller on exhaust and a smaller valve lift of .550 to .700. The RHS is avaliable in iron at $1080 and aluminum at $1380. The AFR's are larger but are they worth $460 more than the aluminum RHS heads.

I tried to make a link to the comparison but it didn't work.

Also any guess as to power I'll make? Considering buying a sportsman block if the foctory will break>

[Killercanary]

What is your budget and goals?

[sinful rides]

I don't want to spend more than $4K. Car will mostly be street driven with a few passes down the 1/4. I'd like to stay with a factory block to keep cost down. I've heard 351's are good to 700hp. I'm only looking to make 500-600hp if the stock block can take it. I plan on using Eagle forged stroker kit with 28cc dish and Jay Allen cam.

[White5.0]

I don't want to spend more than $4K. Car will mostly be street driven with a few passes down the 1/4. I'd like to stay with a factory block to keep cost down. I've heard 351's are good to 700hp. I'm only looking to make 500-600hp if the stock block can take it. I plan on using Eagle forged stroker kit with 28cc dish and Jay Allen cam.

you should be fine with a stock 351 block, they are very strong (at least compared to the 302)

[Rio94gt]

Im going to be running the new Trick Flwo Fast As cast heads on my 408W. Very reasonable price for the performance. $1600 assembeled i believe.

[gmkillr]

I would talk to Jay Allen and follow his recomendation for heads.:goodidea:

[DMmustangLX]

My only choice for an engine that large would be a set of AFR 205/225's. Why stick with Iron, especially if your putting a heavier windsor block up front and a heavy supercharger? Aluminum can be repaired too if something goes bad.

Gt40's on that setup... YIKES! That's not a good idea.


x2 gt40's on 408 :iagree: AFR's will be ur best bet for what u want to do :thumbsup:

[Rio94gt]

I see alot of guys are saying AFR all the way but quite a few 7 sec cars run Trick Flows.

[yeahloh95]

the afr guys run 6's lol

[Rio94gt]

Maybe he should go with the GT40s since me and Rob went 10s with them. LOL. JK Troy.

[cam303]

Look at what heads are on most of the WINNING NMRA class cars.

[yeahloh95]

Look at what heads are on most of the WINNING NMRA class cars.

e7's i know lol:sticktonge:

[cam303]

Your looking in the wrong class

[cam303]

A simple way to look at it. NMRA Pure Street rules put on a weight penalty for running trickflow heads but the fastest pushrod cars still run them.

I wonder why they are not running the "better" AFR heads without the weight penalty?:rolleyes:

[yeahloh95]

i think its because they like a challenge of running quick with more weight?? its easy to go fast when your lighter.i think any alum head these days are better than stock iron its all bang for buck , yes i'm on the afr band wagon. but thats before trick flow was offering cnc ported heads . now i might concider them for my next project.

[George]

What is a Pure Street car?

[Martin0660]

What is a Pure Street car?


NMRA Class. Rules here.....

http://www.nmradigital.com/rules/docs/2009/final/2009_ps.pdf

[Rio94gt]

Lets not turn it into an AFR vs Trick Flow thread. Bottom line that there are much better options out there than a GT 40 head on a 408W.

Good luck with your decision.

[George]

I have brodix cylinders heads on my 306. They make good stuff. I have seen tick flow and afr heads at the track and they do not impres me that much. A buddy of mine has trick flows and a e303 camshaft and a trick flow intake. It runs down the quarter in 13.7 sec. et. Not bad though. He might supercharge it and go for 12 sec. et. He also had a dyno done to it and it makes 277 to the ground. oh and that was with slicks.

[John4cam]

Lets not turn it into an AFR vs Trick Flow thread. Bottom line that there are much better options out there than a GT 40 head on a 408W.

Good luck with your decision.

What the heck, started a poll.:sticktonge:

[Rio94gt]

What the heck, started a poll.:sticktonge:

Good idea. :thmbsup:

[sinful rides]

Anyone know who sales Canfield heads. I'd like to consider them also.

[TJH64]

Anyone know who sales Canfield heads. I'd like to consider them also.

I bought my Canfields, along with my cam, from Jay Allen, Camshaft Innovations.

http://www.camshaftinnovations.com/Canfield.htm

[gmkillr]

Anyone know who sales Canfield heads. I'd like to consider them also.


I bought my Canfields, along with my cam, from Jay Allen, Camshaft Innovations.

http://www.camshaftinnovations.com/Canfield.htm



X2 on Jay Allen, he will set the heads up with the proper springs for your cam.

[Mark Aubele]

GT40's on a 408? I'd love to see that dyno graph. Drop like a rock after 4K!