i know the whole turbo cam debate is beat to death but still unsure on what to run with my setup. Running a stock bottom end Lm7 5.3 with #317 heads, and a s475 turbo, running thru a built Th400 and 3600 stall converter. The z06 cam is what ive been looking at for the money you can pick one up for you cant beat em. And on Skinnies record setting turbo 5.3 Rx7 theyre running a Gt2-3 cam and obviously are having amazing results with it.

But since i killed the whole sleeper effect of the build with the 4" exhaust out the pass side fender. Id like to run a pretty aggressive sounding cam. Thinking about the ECS blower cam just cause it sounds wicked. but im worried with a bigger more aggressive lopey cam i wont get the power gains im wanting for my little 5.3 and RPM range. Prob gonna keep the shift points around 62-6500 range. Not wanting to spin it too high to keep some durability to the stock internals. What are your guys thoughts on a "bigger" cam with this set up. You think it'll be too much for this set up? Should i sacrifice the idle sound and go with a cam thats already proven in a set up like mine. Thanks in advance for any help or suggestions.

 

Aggressive, lumpy cams are generally bad for turbo set ups.

 

The Ecs cam to me would be better suited for a LS1 corvette with the cars light weight. I wish we could find out the specs of the ECS blower cam though. I would just run a custom grind cam for your application imo.

The Gt2-3 cam does work fine too, people have good results. I see more people put them in the 6.0 engines though. That Rx7 5.3L is lighter than a truck too. On the gt2-3 it sounds pretty much stock to me so if you are looking at aggressive sound it shouldn't be your choice. The gt2-3 would work for you though especially since you have the converter you picked out.

If you want a cam with a noticeable lope and would match up well in a truck app with a mp70/mp76 etc look into the isky 212/212 112lsa cam. Quite a few people are running that cam for turbo truck apps now, seems like its getting more popular lately as me and a few other guys keep recommending that cam.


Another cam would be the speed inc TU0 216/216. I would stay around the specs of the 2 cams I recommended and you would be happy. You could also find out the exact specs of the isky cam and have someone else grind it for you if you wanted.

 

The setup is in a 00 scsb 2wd s10. Prob gonna weigh around 3300lbs. Right now with the stock cam i see 12 psi at 3500 without brake boosting. I want the lope at idle just dont wanna hurt performance. Shooting for 750hp to the ground in the end.

 

Being an S10 you can go with something a lil different than the "triple 12" isky that works good in heavy trucks that need Torque.
Pm stock48 and he can help you get what you need.

 

Oh you have an S10, maybe a 218/218 would work better for you since your truck weighs less and you also have a good sized converter to match. Guys normally put the 218/218 in the 6.0 boosted engines on a RCSB. Since yours is an S-10 5.3L I think it would be a pretty good match. Just a thought.

 

Alright thanks guys. So pretty much i need to forget about the aggressive idle and opt for Power and drive-ability for my specific app. Im gonna do some checking around on a custom grind cam. We'll see where that goes. This whole build started off as a budget build. Id like to stay somewhat "budget", as money IS an issue, but budget and high HP dont really go together. lol. And also being as its not a ALL out drag truck. Im willing to run a few more #'s of boost to make up powerwise for the Lopey nasty sounding idle. I mean its mainly a street truck so its not like im trying to squeeze EVERY little bit of power out of it. I feel like The stock internals will be maxed out powerwise way before whatever cam i choose to run is. Kinda just looking for the best of both. Thanks agian for your help

 

lol budget = LS6 cam no other choice and a no brainer. Just get some LS6 springs and some hardened pushrods. I'd still try to get a cam a little larger. You won't have a driveability issue at all though going with a "mildish" cam with your setup. You got the Converter and light vehicle on your side, not like you have a heavy *** extended cab or Crew cab.

 

I plan on going with PAC or Patriot springs and chromoly push rods and Ls2 timing chain and all that whenver i do the swap. And another thing since i opted to go with the 317 heads so i could run more boost im worried with a BIG cam the 8.6:1 ratio wont get the turbo up and going quick enough. Then again... i do have a bottle and i aint skeerd to use it. lol

 

Ah. The low CR could play with the numbers. Just pm stock48 and he wont misguide ya.