i have narrowed down to three camshafts for my truck. here is my info

2002 gmc sierra 1500 2wd ext cab. 370 ci iron block, 11.3 comp, flat top pistons. prc 243 cnc'd heads with stage 2 bigger valves. tbss intake sent to peak speed shop for radical porting. nick Williams 92mm t/b, 1-7/8 full length headers. 4l60e 3200 stall. 3.73 gears. using 93 octane fuel. I would like something that pulls thru mid range up to about 6400 and still have alot of torque.
i am not going to put the names beside the cams, so that it will make for an even playing field.
just looking for advice and what has worked for some of you that may have the same cam or close.

cam (1) 228/232 .626/.626 111+2

cam (2) 231/235 .63x/.61x 111+2

cam (3) 231/234 .629/.615 111 could have it advanced +2 if needed

thanks in advance

 

Do those Pistons have valve reliefs? Those are fairly radical cams for large valve 243s on a 370. I like cam one myself the best of the three although not the specs I would pick myself. 227/235 .614/.621 LSA 111+2 just to throw in an extra wrench in your plan lol

 

thank you, i appreciate the info and advice.

 

anybody else have any experience with cams of these specs

 

cam 1. check P2V before turning the motor if your pistons don't have a valve relief.

cam 2 and 3 are too close to split hairs. you wont see a difference between the two.

 

Cam 1 will give you all the RPM you're looking for.

Are you on stock rockers? I think almost all of em have too much lift. If you have bronze guides in these heads than stock rockers are a huge no no.

 

i have the stock rockers with the btr trunion upgrade.