Ok right now I have a stock iron lq4 I'm considering building a 402 with some 243 heads 90mm and some long tubes. This would be going in a 97 sierra reg. cab. what type of cam would yall suggest for my goal if possible shooting for something in the high 400hp to low 500 hp range if possible n/a. I'm open to all suggestions

 

I'm currently doing something similar to you, but its an LS1 in an 02 RCSB Silvy. When I was looking at cams, I focused more on low to midrange power rather than a peak number. If this is a street driven truck, you will spend most of your time below 4500rpms. Something to think about as you look for a cam.

The advantage you have is the extra displacement will give you the low end torque you want.

 

Just talk to one of the sponsers and see what they recommend... And ur goals for ur truck...nothin better than talkin to the pros

 

I too am building a new motor for my '03 GMC Sierra SLE. I have the full size (8ft bed) truck with a Circle D 2800 converter in it.

I am building an LS1 383 stroker. 4" stroke crank, 6.125 rods, 3.095 pistons, PRC 1.0 heads, truck intake. I am looking at a cam from PCM of North Carolina;

http://www.pcmofnc.com/index.php/per...9x-050-111-lsa

Made for a heavier vehicle, nice lumpy sound, I like it!

Chad