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5.7 /Alpha 1 mating question

Razorback

New member
I have a 1996 non vortec 5.7 in my Wellcraft with an alpha 1 out drive. The motor blew and I’m looking to replace with a slightly older remanned motor.

My motor has a 14” flywheel with a dampener. The motor I’m looking at putting in has a 12.75 flywheel with a 2 piece rear main seal. This motor was supposedly mated to an alpha one before being remanned.

Can I use this motor as is? Or do I have to swap flywheels and put the dampener back on?

Do all Alpha ones have the same size/spline drive shaft?
 
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