GM 5.7L 350 V8 Marine Base Engine -Replaces Mercruiser New

The benefit of using our in house produced units using performance engine blocks include:

Priority main oiling system feeds main bearings first.

Siamese cylinder bores with extra thick walls resist cracking and improve ring seal for more power (minimum .275” thick with 4.185” bore).

Open lifter valley improves oil return to pan.

Blind head bolt holes don’t go through to water jacket.

Billet steel 4-bolt main bearing caps on all 5 mains.

 

Please contact us for more details.

 

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