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Author Topic:   engine question
charlie_two
Member
posted December 13, 2001 07:22 PM
hey guys. never built a 6 inch rod motor. i am running stock 3.48 stroke, will i have to notch the block for clearance anywhere?? thanks
charlie


HENDRENS RACING ENGINES
Member
posted December 13, 2001 09:16 PM
NOT AT ALL BILL

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HENDRENS RACING ENGINES BILL HENDREN


race8k
Member
posted December 14, 2001 12:53 PM
Bill, I havee afreind who built a 6" rod 406 with H beam rods. He had to clearence the block. Why?


istock59
Member
posted December 14, 2001 12:59 PM
I know you asked Bill, but it's because with a 406 you're running a 3.75 stroke crank. With the longer rods (5.7 or 6.0) you have to clearance the block.


race8k
Member
posted December 14, 2001 04:15 PM
Normally you clearence the block when you have to go to a longer stroke.The rods shouln't make any difference because they are not coming down or out any further than what the block was designed for.


jammin
Administrator
posted December 14, 2001 04:18 PM
The width of the H-Beam Rods have a larger OD radius than normal I-Beam Rods....I-beams are lighter too...when made out of basically the same material, i don't see an advantage with H-Beams

jammin


HENDRENS RACING ENGINES
Member
posted December 14, 2001 09:35 PM
race8k: Check istock59's answer. With a 3.48 stroke you won't have any problems. Bill


race8k
Member
posted December 16, 2001 12:54 PM
You usually don't have a 3.48 stroke on a 406.This was a 400 shaft with 3.75 stroke.Put in a 400 block bored 30 over that came with a 3.75 stroke crankshaft.Did he have to clear the clock because of the O.D. of the h beam rods?Would you have to clearece the block with a set of stock 5.7 rod?


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