305 Vortec heads VS 350 Vortec's - Team Camaro Tech
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post #1 of 2 (permalink) Old Feb 4th, 10, 06:00 PM Thread Starter
Senior Tech
Patrick
 
Join Date: Jun 2005
Location: Quitman Georgia
Posts: 2,519
305 Vortec heads VS 350 Vortec's

A customer brought me 2 engines. One is a 97 5.7 Vortec with the popular "906" heads and the other one is a "reman" 97 5.0 with these heads:
12558059...97......305..........Vortec, truck, 1.84"/1.5" valves

I am rebuilding the 5.7 but the owner is trying to save a few bucks and told me if the 305 heads are in better condition to use them.
Would it be ok to use the 305 heads? I don't know the combustion chamber size of them.

69RS/SS,383,10:1cr,4.10,60ft1.6sec,1/[email protected],1/[email protected],Vicjr,RPMheads,750dp, Proform main body, cam,246*-250*@.050,.510,522,1.6rr,700r4,3200stall
383 IS SOLD!
Building a 489BBC

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post #2 of 2 (permalink) Old Feb 4th, 10, 08:01 PM
Senior Tech
Steiner
 
Join Date: Mar 2009
Location: Lyman, SC
Posts: 8,348
Re: 305 Vortec heads VS 350 Vortec's

I believe they're tiny...58 I think. They do at least have the fast burn chambers unlike some of the other 305 heads.

'69 Camaro
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
500hp/538lbft

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'02 Z/28 vert-stock-sold and totaled
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