Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
03-21-2024
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Replies: 2
Views: 213
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
03-18-2024
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Replies: 0
Views: 169
DRM Trailing Arm brackets
New in box, never used DRM trailing arm brackets.
From the DRM product blurb:
"Precise weight transfer is critical for optimum acceleration, braking and cornering. These C4 Corvette DRM Trailing...
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
03-16-2024
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Replies: 2
Views: 213
Secondary Air Pump - New Old Stock
Secondary air pump - NOS (New Old Stock)
Still in original box which was only opened to inspect the pump upon receipt.
I bought this before I physically received my car and realized I don't...
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
03-16-2024
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Replies: 0
Views: 160
Dana 44-HD 3.90 Ring & Pinion (7/16" Bolts)
Dana 44 3.90 ring and pinion. These are the stronger "Viper gears".
Brand new, never used. American made Dana gears.
Selling as I'm going with 3.73's.
SKU : D44HD-390-OE
Asking $500USD shipped...
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
02-29-2024
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Replies: 10
Views: 1,008
Re: 1995 ZR-1 Lingenfelter
I suspect there's a pretty good chance that's the car that Lingenfelter ran in the top speed shootout back in the late 90's that ran 218mph (if I recall correctly it was with a different motor).
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Forum: C4 ZR-1 Technical Postings
01-15-2024
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Replies: 4
Views: 729
Re: Oil in Plenum
All of the above, but also check the coalescing filters are still in place in both cam covers. The filters help manage oil vapor from the cam covers that is vented into the throttle body. When I got...
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Forum: C4 ZR-1 Technical Postings
12-29-2023
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Replies: 16
Views: 1,717
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Forum: C4 ZR-1 Technical Postings
12-28-2023
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Replies: 16
Views: 1,717
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Forum: C4 ZR-1 Technical Postings
12-27-2023
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Replies: 16
Views: 1,717
Air Conditioning Compressor Clutch availability
It looks like my AC clutch is toast. I've searched here and online extensively without finding a definitive answer. I suspect the one listing for a ac clutch compressor to suit a ZR-1 is erroneous...
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Forum: C4 ZR-1 General Postings
11-22-2023
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Replies: 3
Views: 1,025
Car and Driver 0-150-0 2023
Some of you may recall the original 0-150-0 article back in 1998.
In this video they draw some interesting comparisons with the 415 Lingenfelter ZR-1 that won the 1998 competition in this new...
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
07-26-2023
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Replies: 4
Views: 663
Re: Valve Cover Gaskets
This is what you want:
https://www.jerrysgaskets.com/permabond-a136-cam-cover-sealant-7-5b6/
You probably should also consider changing the coalescing filters in the covers while you have them...
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Forum: C4 ZR-1 Technical Postings
06-21-2023
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Replies: 2
Views: 605
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Forum: C4 ZR-1 Technical Postings
06-21-2023
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Replies: 2
Views: 605
Super 44 rear gear ring gear bolt size
Hi guys
I'm looking at buying a 3.90 gearset and it is listed as having 7/16" ring gear bolts (instead of the standard 3/8" bolts).
Am I correct in my understanding that the 7/16" bolts will...
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
06-14-2023
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Replies: 1
Views: 543
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Forum: C4 ZR-1 Technical Postings
03-16-2023
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Replies: 3
Views: 739
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
02-25-2023
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Replies: 3
Views: 614
Re: 3.73 rear end gears wanted
Have you tried Marc Haibeck? He lists them on his website but I don't know if he does supply only.
The added bonus is Marc sells the Super 44 gears (aka Viper gears) which are beefier.
...
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Forum: C4 ZR-1 General Postings
02-06-2023
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Replies: 3
Views: 714
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Forum: C4 ZR-1 General Postings
02-04-2023
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Replies: 1
Views: 644
93 DRM 368 on Bring A Trailer
I'm not affiliated with this sale... I think this car was posted in this groups Facebook page within the last few months.
https://bringatrailer.com/listing/1993-chevrolet-corvette-zr-1-20/
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Forum: C4 ZR-1 Technical Postings
01-18-2023
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Replies: 18
Views: 3,502
Re: Reluctantly joining the catch can club
Nice install BlackZR1! I just ordered my catch can yesterday and was planning on making custom hard lines (albeit routed differently) like you've done. I'm looking forward to seeing if it makes a...
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Forum: C4 ZR-1 Technical Postings
01-01-2023
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Replies: 2
Views: 711
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Forum: C4 ZR-1 Technical Postings
12-31-2022
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Replies: 2
Views: 711
Confirmation sought: exhaust stud leak?
Being only about a year into my practical ownership tenure, I'm looking for validation from those who've dealt with this before.
I'm suspecting the cause of this oil leaking onto the header bolts...
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Forum: C4 ZR-1 Technical Postings
12-29-2022
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Replies: 8
Views: 1,080
Re: DRM coilovers & spring rates
Thes spring rates are etched into the top of the spring. These are mine before I had them sandblasted and powdercoated because they were looking worse for wear.
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Forum: C4 ZR-1 Technical Postings
12-28-2022
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Replies: 8
Views: 1,080
Re: DRM coilovers & spring rates
I have 425 and 325 pound springs on my car. That's what was on the car when I received it. With the FX3 set on tour I don't like how the car feels, vague and floaty. In Sport the ride and response is...
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Forum: C4 ZR-1 General Postings
12-19-2022
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Replies: 5
Views: 783
Re: Help With Coolant overflow
I'm in the process of learning about the coolant bleed process after just buttoning up a top end clean up and refresh of gaskets. These articles may help as I wonder if you have an air bleed...
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Forum: C4 ZR-1 Technical Postings
11-12-2022
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Replies: 5
Views: 1,902
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