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Discussion Starter #1
Hello guys, i know that this is a Ford forum but i got a Pontiac question, hope you don't mind. I have a 1969 Pontiac Grand Prix with a 400 engine in it (factory engine), and i need to replace the distribuitor. Here in my city , there are not many stores where you can buy Pontiac parts, chebbys are more popular, so i was thinking if a chevy style distribuitor like a 350 or another can fit well in my GP.
Thanks for your help guys.




Homer
 

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'Er, no. Tin Indians are a thang of their own. You could, however, try any of the chain auto parts stores, they should be able to get a "rebuilt" unit.
 

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'Er, no. Tin Indians are a thang of their own. You could, however, try any of the chain auto parts stores, they should be able to get a "rebuilt" unit.
for whats the difference:


Basicly everything, The Chevy 400 is a member of the small block chevy engine family and has a great deal of parts interchange with 265-350 chevys. (heads, intakes, distributors, water pumps, exhaust manifolds). The small block chevy 400 has 4.40" bore spacing, a deck height of 9.025 and 2.65" main journals.
The Pontiac 400 is a member of the Pontiac V8 family and has interchangability with Pontiac V8s 287-455. (heads, intakes, waterpumps, distributors, exhaust manifolds). The Pontiac 400 is physically larger with a bore center of 4.62", a deck height of 10.23" and main bearing journals of 3.00". The two engine families however have almost nothing in common, and almost no parts will interchange. The only thing they do have in common is the both share a 4.12 bore and 3.75 stroke. Pistons, crankshafts, and connecting rods, will NOT interchange due to design parameters. Both engines also require a specific transmission bellhousing since they do
 

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Discussion Starter #5
Call Thompson's speed shop, Tuscon, AZ. Pontiac specialist, nice guy's.
Thanks, i will.
And thank you all for your quick response.



Homer
 

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PONCHOS

Blackie, moparman has a good idea! Assuming your not looking for a correct replacement part an aftermarket part would be far ahead of those points. Also, an aftermarket part would offer an easier tune up, relative to timing advance curve and rate. Like those Pontiac's, had a few myself.

Happy motoring,
Dave.
 

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Discussion Starter #8
Thanks for the replies boys. Hey Dave so you like Pontiacs too? Well, how did i get to that car is a good story man, it was my 18th birthday gift from my godfather, can you believe it?
About the distribuitor, the thing goes like this : the GP has the factory engine, but change from points to electronic, change the factory cam for a hydraulic 272 degree Crane Cam, change the stock exhaust for a large stepped headers and put a 750 Holley single inlet. Intake manifold is stock.The engine got distribuitor, the problem is that about a year ago we put a MSD 6A box in the car , and the guy who did the job, pull out some things or wires from the distribuitor he said "To achieve more power". Anyway, the MSD box is now in my Bronco, so i got two choices : 1. to put another red box in my GP or 2. Get another distribuitor.



Homer
 
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