Just a courious question. The engines GM uses for the trucks, Vortec 350, what kind of engine is this. Is it the same as a normal 350, with Vortec heads, or is it an LT1 or LS6 type. I was just courious that if I went to the junkyard, and grabed one out of say a '98 chevy, would this be a 4-bolt main to use, with the added bonus of Vortec heads. Or is it a different monster?

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Rob
'86 TA 305 TPI
Gutted MAF
Ported Plenum
TB Bypass

 

this is an average sbc with vortec heads and a roller cam. It doesnt really matter if it has four bolt mains unless you plan on making 500HP or more at a high rpm. This is a rugged engine and will take some abuse.

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91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 224/230 duration and .477/.480 lift. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, ****ty stock converter. Edelbrock TES, 3inch cat, flowmaster with single 2.5 inch exit.
13.24@104

 

Thanks, so then I assume its like the 87up third gen engines, 1 piece rear main seal, and roller cam. Thanks for your help.

 

I'd like to know what junkyard has new[er] vehicles! All the local ones have 80's cars.

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--Steve S--
1984 Trans Am 305 LG4, 5 speed
RPO codes point to Recaro version
Daily Driver, Flowmaster 80 Series

[This message has been edited by 84TransAm (edited February 06, 2001).]