1970 YH 455 HO 360 HP, 480 FT LBs Torque, 4-Bolt main Engine
 

$1500.00

Local pick up or I will assist in pallet shipping. I will build a special pallet to ship the engine. You pay shipping from zip code 20601

I do not know what type of Pontiac the engine was pulled from.

- Complete original engine except carburetor
- Engine has never been disassembled
- Block #: 9799140
- Date code: A140 (January 14, 1970)

Does it the “64” heads?


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I’ll check tomorrow. But I believe they came with number 15s

YH 4 bolt?
 

YH is 2 bolt mains, IIRC. Do you mean the block is merely drilled for 4 bolt mains, but with 2 bolt caps. Or does it have factory installed 4 bolt caps?

stock 15s

Thanks.

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Good question as I am not that familiar with this block. According to Angeles and McCarthy PMF book the YH has "4 bolt caps." I can't interpolate that to say the caps are secured by four actual bolts, but the block is drilled to accommodate four bolts for the three center caps

post #18 & 19...

http://forums.maxperformanceinc.com/....php?p=5762263

Does the engine turn over by hand? The YH was the Big car engine. I have one in the garage