It is a high quality GM over the counter casting. With proper preparation and porting, they work very very well
and make great power. They are intended to be prepped and ported by the engine builder.
The have a as cast port that does not flow huge in stock as cast form but the port walls are pretty thick for
porting. and there is lots of meat to work with. They turn out real good with correct full porting and prep. Capable of well over 500hp on a racey engine.
Today there are many more cylinder head choices to start with.
But they are still a good powerfull head for those that like to port their own stuff.
But nothing junk about them. Assuming they are not all used up. Race parts live a hard life.
Often these heads get angle milled for high compression for a race motor/typical dirt tract motor.
the casting number ends in 034.
Good used properly ported and preped 034 Bowtie heads that are not damaged, fubared or cracked are a good buy and
have good resale value. Some racing classes require this head.
A used up or damaged Bowtie head is not worth a lot to anybody.
Last edited by F-BIRD'88; 02-09-2013 at 05:51 PM.