Cam Suggestions for GT40P's

Unit 5302 · 11-26-2004, 03:33 PM

On a street car with GT-40P heads, you might pick up as much as 10hp by going with a custom grind cam, over a good choice in the "off the shelf" cam world. Personally, I'd rather have a more forgiving "off the shelf" cam that can deal with a few changes in the combination, cost me a lot less money, and be easier to sell if I should decide to upgrade.

You'll probably want to upgrade the valvesprings on the heads to reduce valve float, and allow you to use cams with .500+ lift at the valve. The heads also respond very well to light porting.

Something like a TFS-51402000 (TFS #1) should be fine for those heads. .499/.510 221*/225* LSA 112*

Don't go for a cam with a lot of lift unless the heads are worked quite a bit. The GT-40P's lose flow volume above .500 lift.

cenok is family · 11-26-2004, 06:53 PM

everyone has told me that the e303 cam goes really well with the p heads. i know this because i have the e cam and p heads and i asked the same question and everyone said they go together well. along with my edelbrock performer RPM intake.

11-26-2004, 06:53 PM	#2
cenok is family Registered Member Join Date: Nov 2004 Location: 4 oh ******* five, Oklahoma Posts: 32	Re: Cam Suggestions for GT40P's everyone has told me that the e303 cam goes really well with the p heads. i know this because i have the e cam and p heads and i asked the same question and everyone said they go together well. along with my edelbrock performer RPM intake. __________________ 87 GT 308 rebuilt by me, Ross forged pistons, cobra intake, thumpers with 1.94/1.6s, afm n-412 cam, 65mm tb, proflow 75mm maf, 3.5" power pipe, 24# inj, 255lph fp, 1.6 rr's, kirban afpr, u/d pullies, KC clutch, pro 5.0 shifter, 4.10's, hedman L/Ts, 2.5" H pipe, spintech prostreets, frpp alum d/s, MAC c/c plates, MSD 6al, 3G alt, f/l sfc, UPR uca's/lca's, tokico shocks/struts, maxspeed springs, HID 5000k My CarDomain

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11-26-2004, 03:33 PM	#1
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Re: Cam Suggestions for GT40P's On a street car with GT-40P heads, you might pick up as much as 10hp by going with a custom grind cam, over a good choice in the "off the shelf" cam world. Personally, I'd rather have a more forgiving "off the shelf" cam that can deal with a few changes in the combination, cost me a lot less money, and be easier to sell if I should decide to upgrade. You'll probably want to upgrade the valvesprings on the heads to reduce valve float, and allow you to use cams with .500+ lift at the valve. The heads also respond very well to light porting. Something like a TFS-51402000 (TFS #1) should be fine for those heads. .499/.510 221/225 LSA 112* Don't go for a cam with a lot of lift unless the heads are worked quite a bit. The GT-40P's lose flow volume above .500 lift.