Posted 2016-05-31 2:26 PM (#512864 - in reply to #512855) Subject: Re: 1957 Plymouth Power Pack?
Location: Colo Spgs
For The 1957 Production year - there were two 4 bbl'd V8's used in Plymouths. One was 301 Cubic Inches and one was 318 Cubic Inches.
If you clean very good any debris on the left front of the block --- just below The Head Gasket --- you will find a Stamped ID Code. The
30 = 301 Cubes and 31 = 318 Cubes. This will show what Engine Block you have in front of you.
This will delete any various "other thoughts" .
Do you have a photo of the left side of this engine ?
Posted 2016-06-01 11:23 AM (#512947 - in reply to #512855) Subject: Re: 1957 Plymouth Power Pack?
The 3 bolt valve covers make at least the heads if not the whole engine newer than 57-58. Not sure when this was changed but the blue color also looks like a factory engine color that was used later. As already mentioned, the right exhaust is newer, also the spin on filter was never used in 57.
Posted 2019-09-11 12:13 AM (#587353 - in reply to #512855) Subject: Re: 1957 Plymouth Power Pack?
Location: Pacific Northwest
Craigslist ad I thankfully saw not long after it was posted. I honestly don't remember exactly how much I paid but it was cheap.
The catch was that I had to pull it out of the '62 Ford truck it was in. I bought it for the 1961 HP Dodge air cleaner. I had no idea that it would be a perfect fit for my Fury. My Fury has an external dampener which is why I asked.
The exhaust manifold on the driver's side is a center dump passenger side with the generator mounts cut off of both of them.
Spin on oil filter adapter. Not sure when the valve cover modifications were done. No doubt the t handle mod was for track side valve adjustments. Pretty sure this is a power pack engine with a three speed manual trans out of a Belvedere.
Posted 2019-09-12 7:39 PM (#587465 - in reply to #587331) Subject: Re: 1957 Plymouth Power Pack?
Location: N.W. Fla.
"Being there is no external harmonic balancer on this engine, can assume that it is internally balanced?"
57chizler - 2019-09-10 1:18 PM
Yes, external balance wasn't used until the seventies.
Most of the early hemi & hemi based Polys had dampers, some didn't. Have seen pics of low deck Dodge & Chr w/o, maybe in expectation of low RPM use. Seems you just add a damper to them, best I can recall. Probably on "A" Polys also.