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Old 10-11-2018, 01:17 PM   #4
Jimjific
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Join Date: Aug 2013
Location: Albany, NY
Posts: 145
Re: Swapping a 307 for a 350

I'm not sure what year the motor is. It is a GM Goodwrench one though. The guy I bought the truck from (it is also a 69 but automatic I bought it in 2015) said he was going to get the original one rebuilt but the builder told him it was cheaper to get a crate motor and put it in.

If he was just doing a replacement and being that it is an automatic, I would assume he would have had to replace the torque converter plate if the balancing was different. So if I see no weights on the torque converter plate would that mean it is internally balanced and I could just use my flywheel I have?

Thanks,
Jim
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Jim - 69 Short Step CST 350 AC/PB/PS
- 69 Short Step 307 Man Column/PS
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