hemi_04d

Looking to spend some money on the car this winter. Looking for H/C/I but I am looking to go the GT40 route. I know the P's supposedly make more power over the regular GT40 heads so I think I am going to go that route. I would like to have a bit of a lope to it so which cam should I go with? Should I upgrade from the stock rockers to maybe the 1.7s?


Its a 1993 Gt

mjr46

choosing a cam based on sound really is an no-no......with all the technical advances in performance, a custom cam would really benifit your build and help it perform as desired.........as for intake a gt-40, explorer or cobra will all complement the package quite well......such cam masters as www.camshaftinnovations.com and www.flowtechinduction.com can point you in the right direction for a cam that performs well with your combo

hemi_04d

Ohhh come on MJ, but isn't the sound what its all about?? Just kidding. Alright, so lets say I go GT40 intake and the P heads. What is a good cam for that package? Should I upgrade rockers also?

mjr46

personally I'd use 1.6 rockers......and as far as a cam goes if you wish to use a OTS cam a tfs stage 1 cam will work okay with that set up and give you a lope

94StinkinLincoln

an xe270hr-14 has a great lope..i had that in my car on the old setup.

hemi_04d

So is the TFS cam the BEST choice for the GT40 setup? If I do go with the TFS and the Gt40 H/I will the stock springs handle the TFS cam? I have read a few different post going both directions some say they will some say no.

justhereforinfo

The tfs1's max lift is .510. I chose the safe route and bought trick flows upgraded spring package. It supports a max lift of .542. The stock cams max lift is .444. I dont know what the stock springs support, but dont imagine it being +.510.

You CAN use the stock springs, but they dont make springs with different ratings for the hell of it.

If you want my honest opinion... I just installed gt40ps and the tfs1 cam and springs, along with the cobra intake, headers, and timing chain/gears. Well, there is definitely a noticeable power increase, but for the $800 I spent on all the parts and time and energy that went into the build, I dont feel it was worth it. I would never do that again unless I stood to gain 100whp from a good set of aluminum heads.

But thats just my opinion, and you'll probably figure it out the hard way, like I did.

94StinkinLincoln

the max lift the springs say they are good for is for coil bind, that has nothing to do with spring pressure, like seat pressure & opened pressure.
the xe270hr-14 cam has .512 lift, 218/224 duration at .050.
i had eddy rpm heads, the stock eddy springs are 110-120lbs of seat pressure...thats not near enough... they say they are good to .575 lift.
the valves started to float around 5800.

84gtcustom

if ya got the money do it right the first time and get some tfs afr or eddy heads, and call jay at www.camshaftinnovations.com he helped me tons deciding my cam. he could build you one for whatever you want. after saing that I havne finnished my build to see if this advise is really worth anything, but EVERY online forum I visited he is highly mentioned.

94StinkinLincoln

DO NOT buy eddy heads, they are waste!
i had a set, i no longer have them...

jay can get AWSOME heads (i have them now) and the custom cam which i also have now.