LT1 block VS reg 350 block

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Jun 14, 2007 | 01:54 PM

speedracer69

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Joined: Feb 2000

Posts: 641

From: Las Cruces, New Mexico

LT1 block VS reg 350 block

What is the main difference? Could you just slap all of the LT1 goodies on a reg 350block

Jun 14, 2007 | 01:58 PM

rskrause

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Joined: Dec 1969

Posts: 10,745

From: Buffalo, New York

Quote:

Originally Posted by speedracer69

What is the main difference? Could you just slap all of the LT1 goodies on a reg 350block

No, the water passages in the deck surface are drilled differently to be compatible with the reverse cooling of the LT1 heads. Otherwise it is the same as other 1-pc. rear seal blocks.

Rich

Jun 14, 2007 | 02:00 PM

speedracer69

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Posts: 641

From: Las Cruces, New Mexico

what about if the cast iron heads on the lt1(like) motor?

Jun 14, 2007 | 03:03 PM

shoebox

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Joined: Dec 1969

Posts: 27,725

From: Little Rock, AR

Quote:

Originally Posted by speedracer69

what about if the cast iron heads on the lt1(like) motor?

They have the same water passage locations as the aluminum LT1 heads and are not directly compatible/interchangeable with the regular SBC.

Jun 14, 2007 | 06:14 PM

Injuneer

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Joined: Nov 1998

Posts: 71,094

From: Hell was full so they sent me to NJ

Depends what you mean by "goodies"..... the entire front of the block is different, requiring a different water pump, distributor, etc.

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