Forum: C4 ZR-1 Technical Postings
08-24-2023
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Replies: 11
Views: 2,503
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Forum: C4 ZR-1 Technical Postings
08-24-2023
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Replies: 11
Views: 2,503
Re: Temp goes from 200 to 225 when A/C is on
I tried a Stant t-stat 3 yrs ago, it never worked right out of the box. The car consistently ran hot until I swapped it out. Especially being in FL, it might be a good idea to look into a lower temp...
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
05-31-2023
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Replies: 2
Views: 630
Re: SoCal Looking for 90 ZR-1 Headers
Marc Heibeck may have a set
http://zr1specialist.com/HAT%20Web/products/Headers.htm
The Henderson headers are a true long tube and make a bit more power than the SW headers. You can choose to...
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Forum: C4 ZR-1 Technical Postings
03-24-2023
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Replies: 14
Views: 2,422
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Forum: C4 ZR-1 Technical Postings
05-31-2022
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Replies: 5
Views: 637
Re: Polyurethane bushings
Recently just installed a rear lowering kit w/ poly bushings on my 94. Felt like it tightened things up back there on mine as well. Ironically I think mine needs a right rear wheel bearing too.
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Forum: C4 ZR-1 General Postings
01-19-2022
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Replies: 11
Views: 994
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Forum: C4 ZR-1 Technical Postings
08-20-2021
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Replies: 6
Views: 1,200
Re: headers and x-pipe
Another option are the long tube headers made by Henderson Performance :thumbsup:
https://www.hendersonperformance.com/hpt-parts
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Forum: C4 ZR-1 Technical Postings
07-22-2021
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Replies: 7
Views: 749
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Forum: C4 ZR-1 General Postings
07-16-2021
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Replies: 3
Views: 675
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Forum: C4 ZR-1 General Postings
06-24-2021
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Replies: 4
Views: 402
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Forum: C4 ZR-1 General Postings
05-31-2021
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Replies: 9
Views: 704
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Forum: C4 ZR-1 General Postings
03-07-2021
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Replies: 23
Views: 1,787
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
01-31-2021
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Replies: 18
Views: 2,392
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Forum: C4 ZR-1 General Postings
01-24-2021
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Replies: 24
Views: 2,653
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
01-24-2021
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Replies: 2
Views: 594
Coil bracket, 93-95 exh manifolds and EGR pipe
Prices do not include shipping
90-95 DIS module, SOLD
90-95 Ignition coil bracket, 2 available
$60ea obo
93-95 exhaust manifolds, replacement cats have approx 500 miles on them
$400 obo
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
01-15-2021
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Replies: 18
Views: 2,392
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Forum: C4 ZR-1 Technical Postings
12-02-2020
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Replies: 18
Views: 1,662
Re: It's Always Something, dammit.
New starters are available. The PO of my 94 had the starter professionally rebuilt before selling the car. A month or so later, it wouldn't crank when heat soaked. Only after the hood was left open...
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Forum: C4 ZR-1 General Postings
11-29-2020
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Replies: 46
Views: 4,515
Re: Looking to get into my 1st ZR1
This is true, however the C4 does have a frontal area advantage.
"Because it has a greater frontal area, the C5 Z06 actually has slightly more drag than a C4 Corvette"
Honeycutt, J 2009,...
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Forum: C4 ZR-1 General Postings
11-28-2020
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Replies: 22
Views: 2,211
Re: First Drive in My ZR-1 - With my Impressions
You could always swap the grey buttons out. The buttons on 92s and 93s are black with orange markings. I saw a thread where -=Jeff=- went a little further on his 90. He changed to the 94-95 style...
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Forum: C4 ZR-1 Technical Postings
11-22-2020
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Replies: 9
Views: 1,488
Re: minor changes and dyno tune for 415 LT5
Thanks Pete, I think we were writing at the same time. The dyno graph reads like an automatic car, showing MPH instead of RPM. Based on the car's 3.73 gears, peak HP looks like it's at about 6800 RPM...
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Forum: C4 ZR-1 Technical Postings
11-22-2020
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Replies: 9
Views: 1,488
Re: minor changes and dyno tune for 415 LT5
Thanks guys. Some more info on the car-I bought it earlier this year from the original owner, it was on consignment at Blackdog Performance Cars. The engine was built by Jim Milstead in the early...
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Forum: C4 ZR-1 Technical Postings
11-19-2020
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Replies: 9
Views: 1,488
minor changes and dyno tune for 415 LT5
I recently dropped off my 93 ZR-1 at Henderson Performance to resolve a low speed driveability issue and have a Core short throw shifter installed.
After some initial runs on the dyno, Corey...
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
11-16-2020
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Replies: 0
Views: 564
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