Need help choosing a cam. I'm building a 350 for my iroc camaro. I want as much functional power as possible. 350 bored .60 over, PC 3003 heads with 64cc chambers 202 intake valves and 160 exhaust valves. . Dual carb tunnel ram intake. I'm shooting for 600hp. Fully forged internals. I'll hit it with spray if necessary but would rather just keep it to one car with the juice. All advice is appreciated!

 

Also has flat top pistons.

 

Probably want a solid roller for this. Getting near 600 out of a 350 is tough but doable. Problem is if heads are out the box they likely wont flow as well as they need to to support that power. Tunnel ram will help tho

probably want to call bullet racing cams, mike jones cams, etc to get a custom grind plus lifters/valvespring to match

my guess is something in the higher 250’s deg at .050”. Maybe low 260 deg

but flat tops you have no compression so the big cam is gonna make it a turd down low.

 

...nvm

 

No.

 

The car is gonna be for roll racing. Not really worried about anything 3k and below rpm wise. Down the road I'll be boosting it so I figured I'd keep the compression low.

 

Also gonna have the heads ported and polished before I put them on. I'm out of town on the railroad so I've got time.

 

Pick one or the other. Boosted build is gonna be different than na in more areas than compression. If oem gm block i wouldnt boost it over 600-700 hp anyway

and by low end i mean up to 5000 rpm lol. 10:1 with a cam designed to peak up over 7k rpm will not build alot of torque under 5000 ish, but no big deal if you stay above that

 

What kind of compression should I be shooting for for Optimum performance?

 

For na? Hard to say. Ideally 12-13:1 i would say but then it might not tolerate pump gas. Need 110 or c12 or e85

11:1 would work better and still produce the power potential. But without stroke you would need small dome or very small chambers to get there.

If the heads are done by someone who is good at porting and get really get them working, 600 by 7000-7400 should be possible and still drivable imo. Should run on 93 oct.

probably run what you have and maybe try shaving heads down to get compression

 

Thanks for all the info. I really appreciate it

 

Seems like a lot of work to use those **** pro comp heads

 

Which do you recommend would make this easier for me?

 

The import castings some use are ok just need work done to the ports and good components.

Speier racing heads has cnc programs for some of the import castings and also Weingartner heads. Weingartner had a 355 make 672 hp with a single carb deal with his heads

 

Alright. I just ordered a forged 60 over stroker kit for this build. Compression is gonna be real close to 12.5:1. At least 600hp is the goal but more is always nice. Which cam will be a good option? I would like to order a complete kit. Engine should be good for 7k+ rpm. Everything I've ordered will have the internals rated for 750+ hp. Also have a set of 1.5 roller rockers I'd like to use too.

 

This isnt a kit engine you are building here lol but you can source components from one person or place most likely

talk to straub technologies for a cam and lifter setup and possibly valvesprings for the combo. Bullet racing cams and mike jones cams could do it too likely. I know jones has lifters and can recommend valvetrain components

if you are doing a 383 now this will be abit easier to do but still require a good combination and some rpm

 

I gotcha. This is my first performance engine I've ever built. Just want to try and do it right the first time. I'll hit them up and see what they can do. Thanks again for all the info!