I'm building a 383 stroker motor to go in my 91 gta trans am. I already have a t-56 tranny and 7.5 posi rear. now I have already got my cam and I was wandering if it will be worth the money to get 1.6rr on my trickflow heads or would there be too much lift to where it would cause a prob.? And I was also wandering if I can use a msd 6al ignition box on my car?

 

what are the cam specs? sometimes the specs for a cam are calculated w/ 1.6rr. if they are calculated with 1.5, go on www.google.ca and find the calculation to convert. what is the max lift on the valves for the heads?

since im curious, why dont you post up the specs of your engine.

EDIT: you can use that ignition on your car. there are different kits for different distributors though.

 

Well the heads have a max lift of .600 and the cam specs were .576/.570 lift w/1.6rr's with a 230 intake duration but I told the guy on the tech line that I wanted to go with 1.5rr but I've been reading on lift vs. duration and saw that the more lift you have the more hp you create. The motor is of course a 383 stroker eagle kit from summit with flattop forged pistons, forged rods, and the motor will be balanced, decked, line bored, etc. the whole nine yards. I just got kenny something? 23 degree trickflow 72cc heads. again.

 

well if the cam was spec'd with 1.6rr, then your 1.5rr, will make the lift smaller. and because its a 383, i would suggest the 1.6rr because of the lift and the geometry and efficency compared to the 1.5's.

what kinda intake you goin w/? by the looks of your cam specs id say its a TPI.

 

actually its going to be a hsr. I read the cam primer and the part about the compression being like 10-1 for that it said you should not go with a cam duration bigger than 230. So with the 72cc heads with flatops I figured I'd be running about a 10-1 or slightly lower. So I told the tech line person from comp cams that I was about a 10-1 and then the rest of the specs and he gave me that cam to run in it. It breathes from 2000-6000 rpms so I decided to go with the hsr instead of the tpi. Do you think it was the smarter thing to do or should I have kept the tpi?

 

the HSR will produce more power at higher RPM, but only if you get the cam that is designed to work with the HSR. for my setup (383 TPI, afr195 heads ported intake, about 9.8:1 CR), i had a custom cam ground. but i also selected my cam based on the rest of my drivetrain (2000stall, 700r4, 3.27 gears) and there was no production ground cam for my setup. there may be already a cam out there for your setup.

i chose the TPI because IMO it looks much cooler than any other intake setup out there, and the TPI is even making a comeback in the hotrod world. its all about what you wanna do, cuz my TPI done right may be just as good as your HSR done right.

 

True. Hey have you run your car yet cause I'm curious as to what type of times I should turn out with my car? I know that you have a slightly different motor so times would be different but I was just looking for a general idea.

 

well i dont think i can tell you what kinda power your engine will produce because we have nothing in common, other than mayb the 1.6RR's. build your motor and take the engine to a dyno shop, break it in, tune it up, get it dialed up perfectly, then drop it in the car and see what she does. are you gonna use an electric water pump too?

 

No I'm running out of funds and I always thought that the electric water pumps couldn't keep up with high hp motors? I guess I was misleaded. But hey can I get away with using the stock computer (and injectors) for alittle while like maybe until I break it in?