i have a 350 chevy with tri thunder heads 800 cfm carb high rise rpm intake and scat bottomend whats the HP?

Question

what the horse power cause i want 500hp out the motor or can someone tell me what i can do to get 500 hp

Answer 1

You can get 500 HP out of a 350 but it takes alot of great parts, a great builder, a lot of know how, and skill in matching parts and tuning, along with knowing all the tricks.

From what you listed, I would say your a novice and this is your 1st engine build up or you bought engine from someone. You left out a lot of the needed specs like bore size, compression ratio, rod lenght, cam specs, head flow #'s, head gasket specs, type of "high rise intake, tune of engine (timing, jetting, etc), oiling system, exhaust system specs like header type/size, pipe size, mufflers, etc, etc.

My guess would be in the 285 to 325 HP range at best measured at the crank.. Take 18% off of that for rear wheel HP figures.

To get 500 HP your going to need min of... cyl pressure up over 215 psi (compression between 10.2:1 to 11.5:1), cam in the 230 to 245 degree @ .050" range, heads flowing in the 255/175 cfm range or better, all the tricks used when building the engine, like looser bearing clearances, file fitted rings gapped to what you need, etc., Good oiling system with like a 7 qt pan with baffles, windage screen, crank scraper, rear main baffle, lifter valley baffle, Intake needs port work done on it., Timing curve dailed in to engine, carb jetted for the engine, good exhaust with headers, dual 2.5" min pipes, great flowing mufflers like dynomax ultra flos or bullets, etc. Set the air cleaner up in a sealed cold air system to a cowl hood or scooped hood.

Answer 2

not enough info but i can tell you right now in all my years of building streetable small blocks I have never ran an 800cfm carb. and 500 hp from a small block takes some serious work or NOS. Last one I managed I had aluminium heads matched to a roller cam with a stout bottom end, a victor jr intake and a 750 cfm carb. this was a 9 second street car with a 150 hp shot of NOS. but theres more to it then just that. good luck

Answer 3

Yep, I confirm the only true way of knowing is to have it hooked up to a Dyno. I would have to doubt that you are close to 500hp yet, as you did not list your compression ratio or the combustion chamber sizes, nor the lift & duration of your cam. assuming all these are stock I would estimate not more than about 280 to 300.

Answer 4

let me stick it in my truck for awhile and ill let you know, sorry just dreaming. the best way to find out how much power is to stick it on a dyno.

Answer 5

u could get a supercharger to add a lil more too it

but take it too a dynomonitor to see bhp and torque