got a set of aluminum heads casting number 12551561 on an project engine I'm working on, just double checking but they have 1.94 intake/1.50 exhaust right? double checking before I order up a set of S/S valves... just wondering how pricy is it to upgrade the valve size?
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1995 Pontiac Trans Am Formula -
anybody...1995 Pontiac Trans Am Formula -
1.94 intake, 1.50 exhaust (assuming no mods are done to it)
12551561 / 1996 / 350 / Gen.II,LT1", aluminum
http://www.grandsportregistry.com/lt1vslt4.htm
Eric W.
89 Firebird Formula WS6
Accel/Lingenfelter Super Ram
6.2L/382.97 ci
Custom PROM Dyno tuned
WCT-5 speed
BW 9-bolt Posi 3.45
Boss MS 18" Rims
Headman Headers 1 5/8 Ceramic Coated
Custom Dual exhaust
1LE upgrade
Custom Temperature / Navigation Rear View Mirror
In a constant state of upgrade!
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