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B20 block and head choice for performance build 120-130

posted by  planetman on  Wed Mar 5 17:54 CST 2008
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last visit: Fri Oct 24 09:29 CST 2014
[RELATED]

Hello,

The 1974 & 1975 Volvo B20 & B30 engine blocks have all US coarse and fine threads for the fastners, including the head bolts EXCEPT FOR THE FOLLOWING LOCATIONS:

Bellhousing bolt holes at the rear of the block
Transmission brace bolt holes near the oil pan bolts as well as the threads in the aluminum brace itself
Crankshaft main bolt caps

I think that the connecting rod nuts and studs, the crankshaft pulley bolt and the flywheel/flex plate bolts also go metric.

I know that the exhaust flange studs and the clutch bolts are metric as well.
--
Eric
Hi Performance Automotive Service (formerly OVO or Old Volvos Only)
Torrance, CA 90501






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New B20 block and head choice for performance build [120-130]
posted by  Deluxe  on Fri Feb 29 04:13 CST 2008 >


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