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#1
04-03-2019, 11:45 PM
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newer engine for 1955 Chieftain
What is the newest engine that will bolt to a 1955 Hydramatic trans? Will the 1958 370 fit? Will the 347 or 370 bolt up with no modifications or is something else needed?
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#2
04-04-2019, 01:11 AM
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All engines up through '60 will bolt to the '55 HydraMatic. '59 & '60 just need a small amount removed from the back of the crank flange to clear the early HydraMatic flywheel.
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Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
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#3
04-04-2019, 09:04 AM
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There is more detail to be had here http://www.pontiacsafari.com/L1Garag...eID/index.html
Scroll down to "Interchangeability".
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My Pontiac is a '57 GMC with its original 347" Pontiac V8 and dual-range Hydra-Matic. |
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#4
04-04-2019, 11:22 PM
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Thanks a lot. That website is very good.
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#5
04-05-2019, 12:59 AM
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Yes, the PontiacSafari website is good. But it only says that "later" engines had the flywheel flange weights. As I said above, those weights didn't appear until the 389 (1959). The DualRange flywheel will bolt directly to all '55-58 cranks. Also- if the '59-60 flywheel flange is machined just enough to clear the early flywheel, there's no need to re-balance the crank.
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
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