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R7U engine special part?

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Old 11-28-2013, 08:38 PM
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Car: 1991 Z/28 R7U
R7U engine special part?

Hi, I'm owner of a 1991 camaro R7U all original and never raced. BUT, the engine broken this summer, and not rebuildable. (1 cylinder destroy)

So, I just want to put another 305 from same year era, but I want to know if is a special engine with different cam, crank.....etc. Can I take a bloc from another car/truck and bolt on everything (TPI and sensor), and it will be the same engine....or is better to install the cam and other part from the factory?

I'm looking for a fast and cheap repair.

Option 2: I have a chevy 400 rebuild and modified ready. But, I see on the net, is not easy engine to run with TPI and the T5 tranny?

What do you think?
Old 11-28-2013, 09:33 PM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: R7U engine special part?

Nothing to special about it. Use the same year performance TPI 305 and all will be the same.
Old 12-03-2013, 11:03 AM
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Re: R7U engine special part?

The only thing you need to recreate would be all of the paint inspection marks on all of the bolt heads. The engine internally is the same. Some say they were hand built and blueprinted, that's it.
Old 12-03-2013, 04:01 PM
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Car: 87 player's trans am a4u (pepsi car
Engine: 305 tpi
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Re: R7U engine special part?

Internally balanced, different rings. Not too much different tho.
Old 12-03-2013, 07:20 PM
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Re: R7U engine special part?

Originally Posted by 87 player bird
Internally balanced, different rings. Not too much different tho.
I am curious, do you have any evidence of these differences? According to all sources I've seen they are identical to any other 305, just "sealed"
Old 12-04-2013, 08:18 PM
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Car: 87 player's trans am a4u (pepsi car
Engine: 305 tpi
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Re: R7U engine special part?

I did the plant upgrade in St. Catherines a couple of years ago. Spoke with a fellow that was involved with the engines. Thats what he told me. Was kind of glad that I was trying to save a piece of history
Old 04-10-2015, 04:43 PM
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Car: 1988 IROC-Z Convertible
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Re: R7U engine special part?

I actually have 2 spare engines that were never installed in cars. If these motors ever had issues the teams weren't allowed to fix them. They'd have to pull them out and put a new motor in.

If anyone with an r7u car is wanting to purchase a motor, I would be willing to part with 1
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