The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Project Sandstorm. 1971 Blazer 4wd, Boosted carb'd 454 sand beast

68panelman · 07-13-2015, 09:53 AM

Iron canine nailed it, Its a 465 since it has the reinforcing ribs built into the case, 435 have a smooth casting ,and a 420 has a bulge on the pass side. My '70 has it also, but with a Dana 20 TC.

07-13-2015, 09:53 AM	#17
68panelman Registered User Join Date: Jan 2011 Location: Delaware and Long Island, New York Posts: 3,451	Re: Started a new project. 1970 Blazer. Iron canine nailed it, Its a 465 since it has the reinforcing ribs built into the case, 435 have a smooth casting ,and a 420 has a bulge on the pass side. My '70 has it also, but with a Dana 20 TC.