Making a 383

[capriceowns]

Originally Posted by silicon212

9.5:1 is pushing it. Let's put it this way - NASCAR is running 9.5:1 compression in their cars (Nextel Cup), and they run on 110 octane. Of course, their engines also run at between 8 and 9 k RPM - any detonation there would be disastrous.

is any 9.x:1 compression good on premium? I scrapped the 383 idea, the engine I have has a good crank and rods so I making a 350 to save money, but I want to break 300hp. theres a speed pro hypo piston with 9.31:1 but i'd rather stay with KB, the pistons im looking at are http://kb-silvolite.com/performance....tails&P_id=290 I estimatied 9.5 :1 with my 70cc heads cause its inbetween 64 and 76 heads

the premium gas up here is 93 octane.

[jveik]

lol 300 horsepower with a 350 is easy as pie... you could make that much power on 87 octane!!! pick up a book at barnes and noble or any book selling vendor and get the book called "Smallblock Chevy Engine Buildups," ISBN: 1557884005, which was published by chevy high performance magazine. it has an 87 octane running engine in an elky that makes 390 horsepower if i remember right, and thats a 355, which is just a rebuilt 350. it also has a 420ish pony version. they dont have a test with the new AFR eliminator heads, and i bet they would kick some ass on a 350