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Re: Need advice on building a 400+ Hp Chevy 350 race engine street / track
Paul,
A couple of things...
Small blocks nevert had "oval port" heads, that's a big block "term". "Double hump" 327 heads were obsolete in 1969. Vortec heads are actually quite good. A little exhaust seat/port work and they're VERY good. No need for 2.02s for the level of power you're after.
400 HP for a "driver" is doable, but with 355 CID (.030 over 350), it makes for a bit of a "rowdy" engine (cam lope, fuel and ignition issues). The "smart play" is to "stroke" the 350 to a 383. That is, use a 3.75" stroke crankshaft and appropriate pistons (pin location differs from the 350) in your 350 block. IMO, 383 is the BEST street/strip combo using SBC. Good low-speed performance and more torque. If you stick with the 5.7" rod, or better yet, go to a 6" rod, high-revving durability is also there.
There are many performance combinations for these engines. Define as close as you can, your exact requirements. Pump gas? Manual or auto trans? More driving than racing?
NOTE: A "race engine" is in a car (or truck) that "lives" on a trailer unless it's at the track. If it sees street time AT ALL, it's a "street" engine. Each have very different internal requirements.
Jim
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