[Mercougary]

For anyone wanting a set of 3.91:1 gears and a simple rear disc brake conversion, there is a 1984 Isuzu Impulse at the Winner Rd. Pick-n-Pull.

 

[Autoholic]

I’m nowhere near it, but does the Isuzu Impulse have rear brakes you can just bolt right up to a GT?

 

[Mercougary]

Yes. Very little modification required.

 

[Autoholic]

Someone near there should just go and pull it. Someone on here would pay for the parts plus labor. I’m at least thinking of making that offer.

 

[Mercougary]

Charles Goin wrote a good article about this back in the day. None of the old links work, so I can't find it again. Maybe he will chime in and give us all a refresher of what he accomplished. It's basically just slotting the mounting holes slightly to get it to bolt up to the axle flange.

 

[Lindsay]

Isuzu Impulse (non-turbo) rear disc brake swap

I hope I'm not beating this subject to death with some of you guys. I have read that with some modification you can swap the rear discs off a pre-87 non-turbo Impulse to fit an Opel GT. Anyone have any tech info to share on procedure? Is it more practical to shell out $3000 to OPS? Cliff

www.opelgt.com

What Year Isuzu Impulse Rear End for Disk Brake Transplant?

Aaarrgg Allright ill be honest im getting a little frustrated. I am looking for an isuzu impulse to take the rear end from, both for the brakes and the diff, but i cannot find the answer to a simple question anywhere in previous posts. What year(s) am i looking for?? I hear an 85 will work...

www.opelgt.com

 

[Mercougary]

If this Impulse is equipped with an automatic, there is a good chance that it also has a limited slip differential as well.
Row52

 

[Mercougary]

GoinManta article.

 

[Mercougary]

Have You Upgraded Your Brake System?

 

[young olds]

How did the trip go? Pictures of the goodies you brought home? Hope the traveling went well.

 

[Mercougary]

When the wrecking yard removed the wheels, they set the car on the ground and bent one of the backing plates pretty good. Gear set is nicer than the one in my car. I'll take some pics.

 

[Mercougary]

So I have an Isuzu open diff for 3.67:1 and up crown gears. Does any one know if their spyders are weak like the original Opel ones? I can make an educated guess what the answer will be based on the quality I have seen of the Isuzus in general. Young Olds, you may want to take this and just weld it up. Pretty knarley for a street car though. My buddy had a full spool in his 12 bolt, 400hp Chevelle that chirped around every corner and was impossible to park in tight spaces.

 

[young olds]

Every time I get the chance to drive the manta I forget it has a welded diff, I think the wheel base and track width plays into that. I’m more worried about deeper gears at this point so welding the Isuzu diff is fine with me.