Pre 86 sbc to vortec

23Hourston

Well-Known Member
Correct me if I am wrong
My exhaust y, transom sheild,
Bellhousing and coupler
Are not compatible when switching from a pre 86 Chevy to a Vortec Chevy
 
you should be able to re-drill the vortec flywheel to bolt the 280 drive adaptor to it, i just mated a vortec to a alpha gen1
 
I looked at the same swap before i podded my boat. It can be done but finding the parts to match the Volvo is a tough one. Call Reg at advanced marine in Campbell River and he will share the details
 
the vortec i mated to the alpha came off Wolf's boat that had a 290dp. no extra parts were needed other than a marine vortec starter.
 
Correct me if I am wrong
My exhaust y, transom sheild,
Bellhousing and coupler
Are not compatible when switching from a pre 86 Chevy to a Vortec Chevy

Coupler should bolt to vortex flywheel (later engines smaller crankshaft/flywheel bolt pattern), if not take to machine shop and have redrilled.
Bellhousing same, exhaust ports and bolts same location, intake manifold bolt pattern different. Pre serpentine engine mount water pumps turn opposite directions. All I can think of.
 
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