The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Phlebmaster's 1972 C20 Evolution***56k- NO WAY!

Phlebmaster · 01-14-2010, 01:19 AM

I started to tear apart my motor tonight so I can put my new heads on and make sure my cylinder walls are ok.

I have dished pistons so I can get away with the small chamber heads I am going to use.

A little paint for show....

The 624 heads that were on my truck are the 1.72 valve!! I am glad to not have to use them any more. Now I have a set of 1.84 1.50 valve 58cc heads. You can compare the old head on top with the 58cc head below.

01-14-2010, 01:19 AM	#4
Phlebmaster Registered User Join Date: Nov 2009 Location: Oregon City, OR Posts: 146	update 12/10/09 I started to tear apart my motor tonight so I can put my new heads on and make sure my cylinder walls are ok. I have dished pistons so I can get away with the small chamber heads I am going to use. A little paint for show.... The 624 heads that were on my truck are the 1.72 valve!! I am glad to not have to use them any more. Now I have a set of 1.84 1.50 valve 58cc heads. You can compare the old head on top with the 58cc head below.