I'm in the middle of a 370 build and wanted to question what crank to run. I've ran a forged crank in all of my drag car motors, but am not really looking to break land speed records by any means with my 370. How many people do h beam rod, forged piston motors with stock cranks? Are there normally issues with a stock crank?

 

stock crank is good for 1000 hp... if you supercharge.. i suggest a forged crank... just make sure you dont knock... stock is fine prolly...

 

Stock cranks are used in combos like that all the time. What do you plan to use the motor for, how much power do you want to make, and how will you make it?

 

You've broken one over 1000?

 

I have seen stock cranks take 1500 hp an not fail

 

I'm looking to make somewhere between 430 and 450 to the ground. Callies Rods, Diamond Flat Tops, 235 TFS heads, Fab Intake, 102 tb. I want it to be a fun, dependable truck I can drive 200 miles if I wanted. It will only be driven on weekends, but I like to take a hot rodding trip every now and then.

 

Stock crank will do what you want it to in its sleep...

 

Stock cranks flex at 1000rwhp.....youll see oil psi drop some after it has flexed


For mild builds stock crank ftw
Big pulley blower setups over 1000 id go forged

 

Do you mean to say that the oil pressure drop is permanent after the crank flexes, or just while it is flexing?

 

A sign of crank flexing is a drop in oil pressure..typically 5-10 psi lower at operating temp, following this youll see material in the oil

I saw this on the ly6, and quite a few threads on yellowbullet and ls1tech....
Motor still ran just had less oil pressure