help my goat get moving - Pontiac GTO Forum
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post #1 of 7 (permalink) Old 08-20-2007, 06:44 PM Thread Starter
 
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help my goat get moving

So im building a 65 gto and iv got a 455 putting out about 550-600hp. iv also got a 389 putting out 400 hp. im trying to figure out what to put in the rear end and what tranny to use i realy want a manuel. I will drive it on the street and drag race it. Any info is greatly apreciated.

i know there are 10 bolt GM'S and 12 bolt GM'S
also conciderd other things like fords etc. INFO WILL BE APRECIATED

we have a stock rear end and a munsie 4 speed either light or heavy duty not ROCK CRUSHER
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post #2 of 7 (permalink) Old 08-21-2007, 07:24 AM
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Welcome to the forums! The tranny and rear end you have should be fine, if they are in good shape. Bigger is always better, I`d do the 455 if it`s ready to drop in.





P.S. This thread is useless without pictures.
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post #3 of 7 (permalink) Old 08-21-2007, 07:32 PM Thread Starter
 
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Our gearing is 3.08 on the rear end and i really dont think a light or heavy duty muncie will hold the power. 600 plus that is
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post #4 of 7 (permalink) Old 08-23-2007, 06:17 PM Thread Starter
 
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i can post picks but the car is a real project.
no glass
no interior
not wired up, and rolling around on 2 rally wheels and two rally 2's i think
the 455 is finished 12.5-1 C.R. port n polished balnced and blueprinted shot peened and polished rods. lunatic cam and the valve train to go with it.
Estimated at 550 plus on race gas.

hey guys help me identify my disk brake swap.
i have a set of disks with arms etc that bolt up to my 65 GTO, only problem is i dont know what they came off of anyone know where i can see a list of disc brake casting info. OH AND YES I HAVE SEARCHED.
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post #5 of 7 (permalink) Old 08-23-2007, 07:20 PM
 
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I've never restored a car, but what are the odds of putting in a modern six speed with over drive gears?

In a few articles I've read, they often suggest using a Ford 9 inch because it has a drop in third member for easy gear changes. That's all the info I can offer. Go with the 455 for sure. That'll be sweet.
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post #6 of 7 (permalink) Old 08-24-2007, 08:26 AM
 
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I just put a 9" in my 67 with 4.11 gears. I took a chance with a company I found on Ebay called Quick Performance Racing but I couldn't be happier with my setup. My adjustable control arms came from UMI performance. This combo is a good bit less expensive than the Moser I put in my Camaro a couple years ago but is holding up to my abuse just fine.

http://stores.ebay.com/Quick-Performance-Racing
http://www.umiperformance.com

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post #7 of 7 (permalink) Old 08-24-2007, 05:53 PM Thread Starter
 
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what needs to be changed to fit the ford 9" in the back of my 65? oh and thanx for the excellent and speedy input
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