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View Full Version : GT40 & cam set up

foxbdy88
12-12-2008, 02:09 PM
Im getting a set of GT40's and am looking at the TFS1 cam or a AFM N-41/N-412 cam. Who has used a set up like this or what would i need to do as for springs for this set up. PLease point me in the right direction...
Notch93
12-12-2008, 02:50 PM
My friend has the GT40's with the Stage 1 cam with 1.7 rockers, and Cobra intake. The car runs very strong.:yes1:

You have to upgrade the springs in the heads.

TFS makes a good kit part #TFS-2500100

http://www.trickflow.com/partdetail.asp?part=TFS%2D2500100&autoview=sku
FoxRodStang
12-12-2008, 03:45 PM
I have GT40P heads, exploder intake(gt40) & a TFS Stage 1 cam & TFS springs. I'm still running the stock rockers (for now) though. It pulls quite strong. Its got a nice lope to boot!
Nova
12-12-2008, 06:09 PM
tfs makes a valve spring kit that will work with iron heads. dual sptings, seals, retainers, locks, ect. summit wants 140 for it plus ship... ive got on you can have for $100.
foxbdy88
12-13-2008, 06:15 PM
Cool thanks for the info, Im dealing with this guy off of another Forum for my heads. Funny this is i sent him the payment and i haven't heard anything back from him in a couple days and i have sent him a couple PM's. So hopefully he sends or sent me them, but if all else fails i used paypal so i would go that route to get my money back.'


If they do come through I'll PM you about those springs!
foxbdy88
12-13-2008, 06:19 PM
My friend has the GT40's with the Stage 1 cam with 1.7 rockers, and Cobra intake. The car runs very strong.:yes1:

You have to upgrade the springs in the heads.

TFS makes a good kit part #TFS-2500100

http://www.trickflow.com/partdetail.asp?part=TFS%2D2500100&autoview=sku

What your set up?, what do you have for Rwhp?
Notch93
12-13-2008, 07:08 PM
What your set up?, what do you have for Rwhp?

I have a 306 that has Performer heads, Lunanti cam, and GT40 intake going in my coupe asap. I'll let you know HP #'s once it gets put in.
rsw007
12-13-2008, 08:44 PM
ive been running a stock cam with 1.7 rockers on mine but plan to install a b303 with the 1.7's after the first of the year.
foxbdy88
12-17-2008, 04:25 PM
finally got my heads Christmas eve, and the casting number is F3ZE AA so im just wondering what is the combustion chamber size on these. I would like to mill them down to reach a 9.5:1 compression ratio. So does anyone have this done that could lead me in the right direction. Once again im using the TFS1 cam and TFS spring kit to match it.