im trying to find the specs on the stock cam thats in my jasper 350. i emailed them and they said they built it to stock gm specs. ive been trying to find duration and valve lift and stock rocker ratio on a gm 87 350. they said the engine was built for the specs of an 87 - 92 factory firebird/camaro. i read the camshaft article and saw the gm stock cams. where would you find the model number at. would jasper use the same model number? how could i cross reference the numbers if they are different.

 

Stock cam specs are listed at the bottom:

https://www.thirdgen.org/mods3

 

Yeah i saw that, but im not sure jasper would of used the stock cam. they said everything to do with the cam and heads was put to gm specs? where would you find the model number for the cam at?

 

My guess would be stamped into one of the ends of the cam, but I'm not sure. You could also get a dial gauge and measure the travel of an intake and ehaust lifter/pushrod to be sure.

 

im pretty sure the head doesnt have to come off right, i did this in school but i cant remember where you put the dial indicator at.

 

i guess ill just say what im after. I going to be using tpis runners and manifold. i want a cam probably from comp cams. i want a cam that will give me the best performance horsepower wise. the manifold setup on the tpi units give a good amount of torque. its the hp that its lacking with the stock setup. with the tpis units it makes power to 5200 instead of about 4500 stock. i want a cam with more hp in the mid to upper range without sacrificing a lot of low end torque. id like to do this without going crazy until i have a bigger budget, which will be a whole new motor. until then id like to do all this with still using the stock heads, as much lift as i can get out of the stock springs and rockers. main point being its a street strip car, vacuum needed and from what ive read no lower than 112?

 

anyone have any imput? anyone ran something similar?

 

anyone have any suggestions?

 

what is the max lift of stock 350 heads?

 

.480 lift is max for stock heads.

a lot of guys like the comp cams tpi line up others prefer the cheaper crane cams, a few even use lunati.

tons of guys run the crane cam 2032 or 2040. I personally am about to put a 2032 crane cam in my 305 with .050 offset locks so i can run the increase lift as im running 1.6 full roller rocker arms.

 

yeah mainly wanting to run max lift i can and just upgrading springs. i waiting for comp cams to get back with me on a cam request. what do you think about this cam for running stock heads.
http://www.compcams.com/Cam_Specs/Ca...?csid=212&sb=2

i really dont want to have to machine anything either. it looks like part # 983-16 springs doesnt need machining?