Author [expand]	[Modern View]
Windancer 11-12-2004 02:15:15 209.142.215.4 11674 Report to Moderator	Does anyone know if the 1972 Blazer with a 350 was before or after GM changed to lesser compression heads to satisfy the emmissions requirements. I think I remember that it happened in cars about then. But I thought the trucks were left alone for a bit longer. A friend has a '72 350 Blazer in his barn and I'm interested to know if it would have the better 350 or the ones with less HP (compression) heads. [Reply]  [No Email]
db 11-12-2004 19:14:00 205.188.116.199 11678 Report to Moderator	Re: '72 350 Blazer in reply to Windancer, 11-12-2004 02:15:15   You can check the head casting number. Here is one site, but you can find many charts on the internte. http://www.prestage.com/community/Tech+Info/Casting+Numbers/318.aspx   [Reply]  [No Email]
raytasch 11-12-2004 15:25:31 71.0.157.60 11677 Report to Moderator	Re: '72 350 Blazer in reply to Windancer, 11-12-2004 02:15:15   Don't know about the Blazer but I had a '78 C20 window van with the 350, factory stock. Somehow I remember it as being the last year of the non cat vehicle. It had no cat and the emissions sticker said something to the effect of "truck engine, no cat, etc." It did run good so my guess is it did not have a very detuned engine. Don't remember what the CR was. ray   [Reply]  [No Email]
kraigWY 11-12-2004 13:00:28 66.82.9.36 11676 Report to Moderator	Re: '72 350 Blazer in reply to Windancer, 11-12-2004 02:15:15   Chev change to low compression engines in 71   [Reply]  [No Email]
RB/CT 11-12-2004 07:11:53 67.163.171.82 11675 Report to Moderator	Re: '72 350 Blazer in reply to Windancer, 11-12-2004 02:15:15   My guess, either 8.5 or 9.0 to one compression, the horsepower of the engine will tell, or run the vin on line or at a Chevrolet dealer to find which motor. Ooops, I mean engine ID number. 350's have lots of low end torque, and this will make up for some lost compression.   [Reply]  [No Email]