Join Date: Oct 2004
Location: California City, CA.
4 bolt main caps on a 2 bolt main 454?
Just pulled the pan on the 454 I got for the Barbie Elky, The engine came out of a 81 pick-up. It has 4 bolt main caps but only two of the holes are being used and the block has not been drilled or tapped for 4 bolt. Was this a common thing for GM?
When I asked my engine guru he said that the caps must have been replaced and the prior rebuilder didn't bother to have the block drilled & tapped. I always thought that if you replace the caps you have to line bore the engine to make it match the new caps. So why not drill & tap at the same time?
Checked the archives.....nothing there.
69 El Camino, no longer Barbie Pink.... Is now Rusty Pearl!!
99 Mustang GT (his)
04 Kia Amanti (hers)
95 Geo Metro (beater)
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