i have a 1979 260hp mercrusier i want to replace with a 400 sbc truck motor.my question is can i use my 260hp flywheel on the 400sbc? because i read somewhere the 350,s were internally balanced and the 400sbc are externally balanced.this 400 checks out to be 73 to 80 years acording to the casting #330817.thanx to all of you.
swapping a 260hp for a 400sbc
- Thread starter bill44
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