Thread: 366 to 427

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Man, i wish i did. i have a 502 in my monte....

I'm gonna take a wild guess here, but i bet it's BLOWN too isn't it????

hey techinspector 1 do the math you see 1/2 the stroke a 454 is 4.000 1/2 of that is 2.000 the piston pin center is 1.765 the rod is 6.375 this rod is 250 long and the block is 10.200 add it up and it is 10.140 0.60 in the hole i have done this with a 427 tall deck i have built a lot of stroker big blocks 9.800and 10.200 i do know what i am talking about .i do not know how thick the walls are on a 366 but most big blocks are .200 thick or more it would need to be check.

blown 502 monte it not nice to brag. but how about 548big block 10 1/2 cr with 10 of boost 720roller270.at 0.50 110 this is fast fast fast

im not BBC smart but wouldnt a 396 crank work, make some sort of stroker?

366 and396 402 and 427 all have a3.760 stroke the bore is different the so putting 369 or 402 piston make it 396 or 402 but you must use a 400 long rod to get it to the top of the deck.i do not know how thick the bores on 366 is but i seen 427 tall decks can take .100 and more the last one i built was 526 0.60 over and 4 1/2 stroke

Originally posted by pat mccarthy
blown 502 monte it not nice to brag. but how about 548big block 10 1/2 cr with 10 of boost 720roller270.at 0.50 110 this is fast fast fast

Sounds really really nice, my next project as far as motors goes is going to be a tall deck chevy with 4.750 stroke and a 5" bore with a 8-71 blower. Your motor sounds like its a bad ass motor!!!!!

Originally posted by pat mccarthy
hey techinspector 1 do the math you see 1/2 the stroke a 454 is 4.000 1/2 of that is 2.000 the piston pin center is 1.765 the rod is 6.375 this rod is 250 long and the block is 10.200 add it up and it is 10.140 0.60 in the hole i have done this with a 427 tall deck i have built a lot of stroker big blocks 9.800and 10.200 i do know what i am talking about .i do not know how thick the walls are on a 366 but most big blocks are .200 thick or more it would need to be check.

You're right Pat, sorry, my math was off.....

You can't punch a 366 to 396 bore. If you could, they'd all be 396's! As it is, they're eyeball deep in scrap piles.

thats ok techinspector 1 me and you see eye to eye on a lot of stuff . i was worried you fell and hit your head

i said it could work with a 396 piston .this is a self piston ,i was tring to help .this is the smallest big block piston that i know of .or buy a set of custom s. but boy thers alot of 468 477 482 489 496 509 526 548 555 565 572 582 632 runing out there and gm did not make them .i did

What kind of blower is that? did you stick with the original 9:6.1 compression? what HP are you getting with the SC, and is it worth the $$$ to add a SC to a moter which already gets 502 HP at the fly?

John