[leejoy]

Help

I got my 454 motor from somebody else who didnt have a clue (and I guess I didnt either). I was working on it last winter. I never dropped the oil pan (because the motor was never pulled out) so I never saw all 5 main caps, however I removed the timing chain cover and saw the front main cap. It was a 2 bolt cap.

Question: I know this engine is from a 79 Chevy truck. somebody told me that the front and rear main caps may be 2-bolt while the 3 middle caps are likely 4-bolt since it was a 79 truck 454.

Is that true, false, or is one of those "it depends" questions?

I ran the casting number on that Mortec website and I think it said 2 or 4 bolt.

thanks.

lee

 

[327NUT]

Its a "it depends" Only the 3 center main caps on chevy production blocks are utilized for a 4 bolt , only way to tell for sure what you have is to drop the pan. AND I,m talking about the early blocks, not LS1's or their cousins.

 

[Guy Hiltz]

454 Main Caps-2 or 4 bolt question

My 454 LS-6 has 4 bolt mains on all the caps.

 

[327NUT]

Yep you're right.......brain fart...

 

[CNC BLOCKS NE]

If the front cap is a 2 bolt thay are all 2 bolt caps if was a 4 bolt cap they would all be 4 bolts on each cap.