Crankshaft for a 360
- Thread starter n00blike
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doug 371
Well-Known Member
stroke is 3.58"...there is no factory forged cranks just so u know
lilcuda
Well-Known Member
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Cross drilling is unneccesary for a mild 360. Here's a link that describes it.
http://books.google.com/books?id=uz...62XB&sig=UucEUE3bhaImZdebaCEzRDvWfDU#PPA28,M1
The above is from Larry Shepard's book. Don't waste your money on this book. It basically tells you to buy a bunch of Mopar Performance parts. There is much better stuff out there now. MP's technology is stuck in the 70's, especially their cams.
http://books.google.com/books?id=uz...62XB&sig=UucEUE3bhaImZdebaCEzRDvWfDU#PPA28,M1
The above is from Larry Shepard's book. Don't waste your money on this book. It basically tells you to buy a bunch of Mopar Performance parts. There is much better stuff out there now. MP's technology is stuck in the 70's, especially their cams.
fishy68
Tyr Fryr's Inc.
The stock cast crank is a very durable piece so unless your making 500+ hp or running a big shot of nitrous you don't need a forged crank. I believe SCAT sells them for high hp motors but if your build is mild you don't need one. It ain't a chevy that needs one to stay together. The 360 bearing journals are about the same size of 454 journals if I remember right.
Cross drilling supplies more oil to the bearings but it has a dis-advantge also. It weakens the crank. I don't cross drill a cast crank.
Cross drilling supplies more oil to the bearings but it has a dis-advantge also. It weakens the crank. I don't cross drill a cast crank.
I want one for better acceleration. Is there a cheaper way to do this?
Im going to be auto crossing so acceleration is one of my top goals.
also what do you guys think about those 4 bolt main kits for SB 360s?
Im going to be auto crossing so acceleration is one of my top goals.
also what do you guys think about those 4 bolt main kits for SB 360s?
fishy68
Tyr Fryr's Inc.
Are you saying your wanting a forged crank for better accelleration? A forged crank don't make an engine more powerful. Just more durable.
4 bolt mains are a waste of a good 360 block. The 360 main webbing isn't thick enough to properly support 4 bolt mains. It actually weakens the block instead of helping.
4 bolt mains are a waste of a good 360 block. The 360 main webbing isn't thick enough to properly support 4 bolt mains. It actually weakens the block instead of helping.
Bill Crowell
Well-Known Member
The stock 360 cast crank is so strong that you don't need a forged crank unless you're producing ~ 600 bhp. Chrysler's metallurgy and casting techniques were light-years ahead of Ford and GM, plus they enlarged the crank's main journals (huge!) when they designed the 360. I have never heard of one breaking. That's why there's (I think) only one forged crank available in the aftermarket: there was just no consumer demand for a forged crank.
I'm running a built 360 in my '62 Valiant with the cast crank, and have had absolutely no problems. I don't know how many horsepower my engine produces, but it must produce quite a bit because the car will pop a wheelie.
I'm running a built 360 in my '62 Valiant with the cast crank, and have had absolutely no problems. I don't know how many horsepower my engine produces, but it must produce quite a bit because the car will pop a wheelie.
3
340srule
Guest
A cast crank will be just fine with your mild build,i'm running a Mopar cast 4" stroker in my 340 putting out 520 h.p.,its doing just fine...
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