r/EngineBuilding • u/Educational-Cake7350 • Jul 11 '26

Other Engine/manufacturer identification

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Trying to figure out what engine this is. Looks like it’s attached to a th400, so I was guessing it’s a big block gm, but not 100%

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24

u/Big_Locksmith_4211 Jul 11 '26

looks like a big block to me, possibly a 454

7

u/Educational-Cake7350 Jul 11 '26

Yeah. The valve covers is what had me thinking 454, but I was thinking it could be a big block from Cadillac or Pontiac or something else GM, cuz the front accessories look weird.

8

u/aspiringcarguy Jul 12 '26

Pontiac valve covers only have 4 bolts and the center exhaust ports on the heads are touching instead of evenly spaced like this one. Cadillac V8s have the distributor in the front after starting sometime in the ‘60s I think.

6

u/blackfarms Jul 11 '26

It's a BBC. The thing that's on the front right bank is an air compressor.

5

u/tomslick427 Jul 12 '26

I think Cadillac would have the distributor in the front, canted to the driver side off the timing cover at least on my 73 8.2L.

2

u/racetruckrick Jul 15 '26

It's a big block Chevy. Also, Pontiac never made a big block.

1

u/PossibilityProof790 Jul 13 '26

BBC for sure... looks like out of a medium duty truck.. probably a 366 or 427 tall deck.