What should I do with 64 GTO original motor and trans? - Pontiac GTO Forum
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post #1 of 7 (permalink) Old 03-14-2019, 03:37 PM Thread Starter
 
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What should I do with 64 GTO original motor and trans?

Hello Everyone,
I am in the process of restoring a highly documented, two owner 1964 Pontiac GTO post coupe (126,481 miles). I happened to stumble across a freshly built 1965 WG code 421 and muncie 4 speed transmission, so I to jumped at the opportunity. However, like many projects out there, mine has stalled because of money. Additionally, I have no idea what to do with the original motor and trans. I initially thought that I would pack them up, and sell them with the car if I ever had to sell it, but then I got to thinking, why would anyone want to un-do a car that has been converted from a 389/auto to a 421/4spd? At any rate, I guess I am looking for advice on two questions. Should I keep the original motor/heads/trans/intake/exhaust/timing cover/carb, or am I better off trying to market the car later on with all of the original equipment. Additionally, if I do get rid of the motor, what is the market for these things? I have included some of the engine numbers below to provide a bit of additional info. I will do my best to describe where the markings came from. Any advice or information would be greatly appreciated. Thank you in advance for your assistance on this.

79J 420636 (passenger side front of block below head)
9773383 Arma Steel (Crank)
9770716 (heads)
9773155 (Rear of block near distributor opening)
Date code: both heads and block have a date code of D14 (there is an additional 4 on the block D144)
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post #2 of 7 (permalink) Old 03-14-2019, 07:01 PM
 
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I am generally against separating the original engine from the car but what is done is done. At this point I would say to package and crate the parts and offer to the next owner when that time comes. You are likely to have more potential buyers if you have those original parts and can possibly ask a higher price than you otherwise would get.
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post #3 of 7 (permalink) Old 03-15-2019, 05:59 AM
 
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Myself, I like originality. If it was me, I'd leave things as they are and include the original motor/transmission in the price. That will give the new owner the option of converting back if he wants to, Nicholas.
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post #4 of 7 (permalink) Old 03-15-2019, 06:08 AM
 
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I’ll make it unanimous, don’t separate the engine from the car. Most folks buying a 64 GTO are looking for a numbers matching car. This includes the engine block Heads, intake, water pump, and alternator.


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post #5 of 7 (permalink) Old 03-15-2019, 05:54 PM
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Depending on the condition of the car: non original engine is a $10,000 hit on the value of the car. Your car, your choice. I'd leave it original. Original powertrain GTO's are going the way of the Dodo bird. They're only original once.
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post #6 of 7 (permalink) Old 03-17-2019, 05:44 PM
 
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Garage
If you plan to never sell it , make it what you want.
If you plan on selling but want what you want,do what you want ,keep the OE powertrain around for originality for the next buyer.

If you are like me, and did not get the OE stuff with the car, (and I dont give a shit) then build it to be as bad as an be.A 64 GTO is cool no matter what (except with a chevy motor in it LOL)

Remember Jim Wangers car. His was not a 389 car. Not many knew at the time.
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post #7 of 7 (permalink) Old 03-18-2019, 01:04 PM
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You could also build the original 389 with a stroker crank and have a screaming 434 or whatever. 421's aren't all they're cracked up to be. I know. Their big diameter main bearings weaken the block and are inferior when it comes to oiling characteristics. I've seen lots of them with spun main bearings. The neatest thing about the 421 is the name and the mystique. I'd rather run a stock or stroked 389, especially if it was born with the car. Smokey Yunick even experimented with custom small -journal cranks in the 421's in the early '60's in NASCAR because the 3.25" mains failed at extended high rpm regularly.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO General Discussion

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