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GM used casting # 3830831 for those 817 heads back in the day, and that new 340 horse intake for 1963 used the Rochester 4 barrel up top...

Just use the Lo-Po 409 340hp intake, just about the best cast iron 4bbl intake ever made for the W-engine, well except for the tri-power...

Fan shroud would be a good idea.

I should add the bellhousing needs to be for a 4 speed as it will have a larger front bearing retainer than the 3 speed.

If you can find the bellhousing and flywheel from a 8 cylinder truck you should be good if you plan on using the side bellhousing mounts.

There's a potential "test mule" in my stable. It currently resides in a '62 Biscayne :). Truck block. Stock bottom end using the 409...

Not sure if it's accurate, but I heard they only made about 50. That is super rare. It's going to make them expensive. If some one made...

Carl Snelling has checked cars for me if they were factory 1961 SS cars - we checked one a few months ago and it was built before GM...

How's this Bob.?...think I may be a quart low. 30 years and hasn't seen the light of day.....:brow:guns 62 QB and a couple matching 690s...

Early truck 348 blocks were double notch, later truck 348's were single notch, I think they coincided with early 348 truck heads not...

Double notched blocks went away after the 333 heads came out in 62. they had a combustion chamber in the head so second notch wasn't needed.

655 348 truck block has a single notch

All W-motor blocks with the "X" on the front have heavier main webs than earlier blocks. They also have Armasteel caps, whether that...