Another 72 LT1 renovation question

[Mark E.]

Re: Another 72 LT1 renovation question

Fred, I also recommend the system from Corvette Central if you’re going to replace yours. I installed the complete 2 1/2” aluminized system on my L82 and I was very happy with the fit, function and sound. The system judged well, standard deduction for aluminized system, but I think that was the only deduction I received. Also worth the wait for the free shipping offer if it’s still available. Good luck.

No Configuration deductions for the mufflers or pipe bends?

[Patrick H.]

Re: Another 72 LT1 renovation question

No Configuration deductions for the mufflers or pipe bends?

Depends how you want to argue that one.

If you read the standard deduction section, it mentions the 25% for aluminized. There is no comment stating 25% plus CDCIF.
I'm not saying it doesn't happen, but most will deduct 25% alone; there are those who do 25% plus.

[Mark E.]

Re: Another 72 LT1 renovation question

Good question. Does the standard deduction cover all CDCIF? Or only Finish?

[Dick W.]

Re: Another 72 LT1 renovation question

Good question. Does the standard deduction cover all CDCIF? Or only Finish?

I believe that you will find your answer below



C: Configuration

D: Date Code

C: Completeness

I: Installation

F: Finish

[Leonard M.]

Re: Another 72 LT1 renovation question

Here's some pictures from my '70 LT-1's exhaust system. It is the Corvette Central aluminized system with welded mufflers that Patrick mentioned.

DSCN0236.JPGDSCN0269.JPGDSCN0259.JPGDSCN0261.JPGDSCN0274.JPG

[Fred H.]

Re: Another 72 LT1 renovation question

Good morning Leonard, the photos you provided are very helpful, and much appreciated. Fred

[Dick W.]

Re: Another 72 LT1 renovation question

Here's some pictures from my '70 LT-1's exhaust system. It is the Corvette Central aluminized system with welded mufflers that Patrick mentioned.

[ATTACH=CONFIG]100186[/ATTACH][ATTACH=CONFIG]100187[/ATTACH][ATTACH=CONFIG]100188[/ATTACH][ATTACH=CONFIG]100189[/ATTACH][ATTACH=CONFIG]100190[/ATTACH]

I believe it would take a deduction for the pipe bend configuration and of course the mufflers.

[Patrick H.]

Re: Another 72 LT1 renovation question

I believe it would take a deduction for the pipe bend configuration and of course the mufflers.

Again, depends on how you want to read the rules.

If the JRM stated that it was 25% plus appropriate CDCIF deductions, that would be easy. But, it doesn't. It only states that aluminized systems receive a 25% standard deduction.

Since the other standard deductions (battery, tires, glass) are not a percentage plus, most of us do not treat exhaust any differently.

PH

[Dick W.]

Re: Another 72 LT1 renovation question

Again, depends on how you want to read the rules.

If the JRM stated that it was 25% plus appropriate CDCIF deductions, that would be easy. But, it doesn't. It only states that aluminized systems receive a 25% standard deduction.

Since the other standard deductions (battery, tires, glass) are not a percentage plus, most of us do not treat exhaust any differently.

PH

OEM pipes are mandrel bent without the indentation for the shoe of the pipe bender. A deduction in my book.

[Patrick H.]

Re: Another 72 LT1 renovation question

OEM pipes are mandrel bent without the indentation for the shoe of the pipe bender. A deduction in my book.

I'm well aware they are different. I'm just citing the rule and the logic of current judging for exhaust.

[Mark E.]

Re: Another 72 LT1 renovation question

Again, depends on how you want to read the rules.

If the JRM stated that it was 25% plus appropriate CDCIF deductions, that would be easy. But, it doesn't. It only states that aluminized systems receive a 25% standard deduction.

Since the other standard deductions (battery, tires, glass) are not a percentage plus, most of us do not treat exhaust any differently.

PH

Thanks Patrick. This is what I was (trying) to ask.

[Mark E.]

Re: Another 72 LT1 renovation question

OEM pipes are mandrel bent without the indentation for the shoe of the pipe bender. A deduction in my book.

I thought CC exhausts have mandrel bends. I guess they don't.

[Dick W.]

Re: Another 72 LT1 renovation question

In my mind the bends deserve a deduction under Configuration, not a full, but partial

[Gary J.]

[Mark E.]

Re: Another 72 LT1 renovation question

Doesn’t the Gardner pipes have the mandrel bends? Just asking the question? If they do would you not be better off getting the carbon steel than the aluminum ones for a less point deductions?

Why would mandrel bends earn fewer deductions than compression bends when neither are original?