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spencer_41188 · 03-05-2013, 02:04 AM

im in the prosses of building up the 350 i pulled out of my 87 the only vortec heads i could get my hands on was off a 305

what kind of numbers can i expect with a 350 bottom end and a 305 top end

all i read about is how crapy these heads are and if your gana go vortec go with the l31 heads but the l30 heads do flow better then the swirl port tbi heads and the compression helps

03-05-2013, 02:04 AM	#20
spencer_41188 Registered User Join Date: Oct 2011 Location: fortwayne, indiana Posts: 209	Re: vortec on a gen 1 small block questons. im in the prosses of building up the 350 i pulled out of my 87 the only vortec heads i could get my hands on was off a 305 what kind of numbers can i expect with a 350 bottom end and a 305 top end all i read about is how crapy these heads are and if your gana go vortec go with the l31 heads but the l30 heads do flow better then the swirl port tbi heads and the compression helps __________________ 88 gmc v3500 bonus cab classy chassy conversion, 454, nv4500, np205, dana 60 front with spool, 14 bolt ff cac rear with locker.