1.)Does my new crankshaft need to be balanced?

2.)What length pushrods do I need?

3.)Can I put 15°/18° heads on my 23° degree motor?

4.)Can I put a 383 crank in a 350 block without modifications?

5.)Does changing 5.7 rods to 6.0 rods change the stroke?

1.) Does my new crankshaft need to be balanced?
Yes. Any new aftermarket crank needs to be balanced, even the stock replacement cranks.

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2.) What length pushrods do I need?
Because of all the different variables like:

Block deck height
Head deck height
Head stud boss height
Rocker arm brand/design
Cam base circle size
Lifter pushrod seat height
Valve stem length

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3.) Can I put 15°/18° heads on my 23° degree motor?
No. You can not swap the heads without changing the pistons, rockers, manifold and headers. You will also want to change the camshaft to work better with the heads.

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4.) Can I put a 383 crank in a 350 block without modifications?
No. You have to clearance the block and check the rod to cam clearance. You will have to run a small base circle cam or clip the rod to clear the cam.

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5.) Does changing 5.7 rods to 6.0 rods change the stroke?
No. It does not change stroke or cubic inches, but you will need a different piston with a shorter compression height.

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