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#1
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57-64 Olds/Pontiac rear into a 65?
With the recent resurgence of parts available for the 57-64 Olds/Pontiac rear ends can such a rear be put under a 65 Catalina?
I am curious as it is: An interesting conversation piece - keeps it "Pontiac". A stout unit. Makes changing rear gears easier. I am clueless on how springs and control arms would mount - also not sure of axle positioning and pinion angles. Note - have 2.93 and 3.73 ratios for original rear, with the original posi unit. If a car was to be raced, then the original rear can just be stored. |
#2
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You could do it, but it would require a custom built Olds/Pontiac housing. Since Brad sold Fabcraft the number of parts available for the 9.3” Olds/Pontiac diffs have shrunk( gear sets especially) while the prices have increased dramatically. You might be better off contacting Quick Performance in Iowa and have them build you a custom 9” to fit your ‘65. That’s what I have decided to do with my ‘64 Cat.
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“It takes considerable knowledge just to realize the extent of your own ignorance.” Dr. Thomas Sowell |
#3
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Thanks for posting - just a thought experiment.
If I really wanted to optimize the car in question for the drags - the Pure Stock Drags specifically - I should try to find a 4.11 gearset. |
The Following User Says Thank You to joegpho For This Useful Post: | ||
#4
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If your serious about the pure stock drags, be sure to very carefully dissect the rule book before making the investment. Different sanctioning bodies may require the same design rear end housing as the car came with. Meaning the drop out rears from the old Pontiacs or a Ford 9" would not be allowed. Only the Salisbury style that came in the 65-70 models. Good luck with the project.
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#5
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Quote:
The rules for the main one (at Mid-Michigan Motorplex in September) merely state: The rear axle must be of the same manufacturer as the car. Any gear ratio is allowed. Note they do not specify any year range. I'm not racing the car in question - at least not anytime soon! The thought now is that I would like to collect a 4.11 gearset for the existing rear. |
#6
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Quote:
When I raced my ‘66 GP years ago, the best I could find was 3.42’s. Brad used to have 3.55’s but no longer. Not even sure there ever was a 4.11 for that rear. If it needs to stay Pontiac, use the 9.3. If not, go 9” Ford.
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" Darksiders Rule "
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The Following User Says Thank You to misterp266 For This Useful Post: | ||
#7
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Quote:
Glad I got all my rear end and clutch linkage stuff already. You can also put a 9” center section into a 9.3 Pontiac housing with a bit of work. Would then at least appear to be a true Pontiac rear.
__________________
" Darksiders Rule "
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The Following User Says Thank You to misterp266 For This Useful Post: | ||
#8
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Quote:
__________________
“It takes considerable knowledge just to realize the extent of your own ignorance.” Dr. Thomas Sowell |
#9
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Quote:
__________________
“It takes considerable knowledge just to realize the extent of your own ignorance.” Dr. Thomas Sowell |
#10
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I went thru this adventure a few years back. There are a few hurdles to jump. https://forums.maxperformanceinc.com...d.php?t=824532
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Red\black 65 Grand Prix 467 E-head stroker, Viper T-56 6-speed, 4.10 spool |
#11
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John at J&S gear in Huntington Beach CA bought the 9.3 deal from Brad.Tom
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