Suffix stamping deck codes on both engines come up with no results both january month code A and one 1990, and the other 1991 Not only now do we gotta swap all the truck style parts on this engine but now the freaking intakes and distrib, on top of all the other parts.īoth engines have the same block casting code and are only one year different on block casting dates. Id like to kick a GM engine parts design engineer in the ***** for this one. Why did GM decide it was good to have/make different intakes and distribs on the tbi engines, between car and truck ones. The car engine didnt come from the yard with a distrib. the car engine distrib intake hole is wayyyyy larger than the truck one. I went to put the truck distrib in the car engine and well. We are replacing the tired dying 305 engine in a 91 chevy pickup truck at 324k miles and we eneded up with a 60k miles 305 from a 90 car Ok i wasnt aware of this difference but apparently the intake and distributors on the tbi sbc engines differ from car to truck
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