can a standard ls1 engine be bored out to 427 ci??? and how much would it cost?

 

doubt it, w/o strokin it you'd be lookin at approx. 4.422" bore if i did the math correctly

 

No, the 427 LS1s are based off of the C5R race block.

 

whats the difference between the ls1 block and the c5r block?

 

Just about everything.

Longer stroke, wider bore obviously. They probably add more structural support and different this and that's.

It probably still bolts up to everything due to external dimensions being the same. But everything inside is gonna be changed.

 

whats the largest you can bore out and ls1? and how much to expect for everything involved?

 

I believe 382 or 383 is the biggest size an LS1 can be bored out to.

 

i was preety sure it was 382

 

Boring and stroking are two completetly different things. You cannot bore a LS1 to 383 or 382. You can stroke an LS1 to 382, but you cannot bore it.

 

you can go over 382 with an all bore motor with the right sleeves..

you have to resleeve and ls1 to bore it.

all of the big motors are strokers.. however the only one to use the stock bore is the 382

 

MTI does a 387 Bore but i've never heard of anything larger than that. Not on a factory LS1/6 Block

 

Aluminum 427's are...king. Act now and for only the retail of your car (not exactly, but close enough), you can have one of these beasts.

 

Thats a stroke and a bore, the question was bore.

 

I was just showing him what the 427ci was.
Didn't say it wasn't stroke and bore...

 

Must have........