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4.3 mercruiser engine swap

Thread starter Snipesvi
Start date May 1, 2018

S

Snipesvi

Cadet

Thread starter

May 1, 2018

#1

Has anyone ever swapped a 4.3 gm car engine with a

busted 4.3 mercruiser?

Scott Danforth

Grumpy Vintage Moderator still playing with boats

Staff member

May 1, 2018

#2

The block and heads are the same parts between a truck and boat for the same years. Everything bolted to the block and heads is marine specific

Bondo

Moderator

Staff member

May 2, 2018

#3

Ayuh,.... No problem, but Vintage is important with the 4.3l, which went through quite a few changes durin' it's run,....

Scott Danforth

Grumpy Vintage Moderator still playing with boats

Staff member

May 2, 2018

#4

here is some reading on the 4.3 changes along the way from 1985 on.... https://forums.iboats.com/forum/eng...history-of-the-4-3-liter-with-casting-numbers

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