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: why would you put a 350 crank in a 400 ???? Land Crusher 02-20-2002, 08:59 PM was looking at my jegs catalog and they sell bearing spacers to bolt a chevy 350 crank into a chevy 400 Isnt this like going backwards???? thers got to be a reason but I cant figure it out??? taloya 02-20-2002, 09:06 PM IIRC, you end up with a 377 cu with this combo. Shorter stroke than the 400 for higher revs. You also eliminate the siamese ports of the 400 for better cooling. The opposite combo is better for off-road. 400 crank in 350 block for 383 torque monster. 71RCKCRZR RYAN 02-20-2002, 09:07 PM BIG BORE .+...SHORT STROKE .....=RPM AND POWER DESTROKED MOTOR.... mike 02-20-2002, 10:52 PM Originally posted by taloya IIRC, you end up with a 377 cu with this combo. Shorter stroke than the 400 for higher revs. You also eliminate the siamese ports of the 400 for better cooling. The opposite combo is better for off-road. 400 crank in 350 block for 383 torque monster. How does the crank eliminate the siamese ports? Since they're part of the block. Lance 02-20-2002, 11:04 PM Originally posted by mike How does the crank eliminate the siamese ports? Since they're part of the block. LOL I was wonderin' the same thing. ;) liveaxle 02-21-2002, 01:07 AM shorter stroke = higher revs = more fun What would you rather drive, a car that has a V8 that will turn six or seven thousand RPM's or one with a stroker that will ony do fourty-five hundred RPM's? On a side not, a 377 isn't all that short of a stroke. The Chevy 302 and the 355 (hybrid) are short stroke engines. JeepinIan 02-21-2002, 04:18 AM Originally posted by taloya ...You also eliminate the siamese ports of the 400 for better cooling... Oh, Mr. Newbie, please let me know how changing a crank will eliminate the siamese ports in the head. :shaking head: Aggro 02-21-2002, 06:02 AM :smack!: (repeatedly) TEX 02-21-2002, 06:16 AM Originally posted by liveaxle On a side note, a 377 isn't all that short of a stroke. The Chevy 302 and the 355 (hybrid) are short stroke engines. I think you mean 358, not 355. 355" is typically arrived at by boring a 350 .030 over. The 358 is a 400 bored .030 over and destroked with a 3.25" stroke crank (3.25" being the stock stroke for a 327). The advantage is for things like circle track racing where constant high RPM's are the case (NASCAR engines are essentially 400's destroked to 358"). Also, for any kind of racing that handicaps based on cubic inch limits. A 358 will produce more power per cube than will a 400 thanks to its better bore/stroke ratio as well as its better rod/stroke ratio. And yes, you STILL have a siamesed block when you're done ;) TEX | |