mangfr00

Does the GM LSX 454 crate engine have a long enough cylinder bore to preserve the piston skirts with that 4.125 stroke?

I'm assuming that the GM engineers matched the pistons accordingly to assure long engine life, but still want to hear expert opinions

Please

cv67

noone here wil know more than the engineers that designed them.
imo anything GM builds will outlast aftermarket stuff. Nothings perfect

zeevette

Not sure, but LSX blocks can be had with longer deck height.

romandian

"This durable iron block is based primarily on GM's production LS7 block but cast with more material in key areas, including a thicker deck and bores, to support 454 cubic inches or more."

mangfr00

Thanks, I appreciate the response on this

zeevette

I think it's about 150 pounds more than the stock block, but with that much power...