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Search took 0.02 seconds. Search: Posts Made By: bmarcum
Forum: C4 ZR-1 Technical Postings 1 Hour Ago
Replies: 0
Views: 8
Posted By bmarcum
Best sounding cams

So I am dreaming of what my next z should be. I remember some (not a lot) of C4 Zr-1 that had high over lap cams and sound great at idle and at 7,000. I couldn't find the YouTube videos. Anyone have...
Forum: C4 ZR-1 General Postings 1 Hour Ago
Replies: 0
Views: 13
Posted By bmarcum
Any one keeping details on average mile on 90's

I have been out just enjoying my z for the last X years. I am amazed how many sub 25K mile cars are out there. Any keeping details on how many of the 3049 1990 Z are left and how many have under X...
Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted 1 Hour Ago
Replies: 5
Views: 108
Posted By bmarcum
Re: WTB 1990 Black over red Z

Any leads on black 1990. Love a 20-40K mile car. Red interior would be awesome IMHO! I will put headers, exhaust, 4.10 ring gear, and a Marc chip on it, but if it has it already all the better.
Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted 11 Hours Ago
Replies: 5
Views: 108
Posted By bmarcum
Re: WTB 1990 Black over red Z

I am silly. I love the old front and new rear end of the 1990. Something about the early ZR-1's belt that just works. It has to be a 90 for me.
Forum: C4 ZR-1 General Postings 1 Day Ago
Replies: 2
Views: 80
Posted By bmarcum
Re: First 1990 ZR-1 Vin runs

Sorry I found the thread I was looking for. Thanks to all for keeping these cars alive and cool! Love this site and community!
Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted 1 Day Ago
Replies: 5
Views: 108
Posted By bmarcum
WTB 1990 Black over red Z

Anyone know how many Black over Red Z where made in 1990? Any one have one for sale?
Forum: C4 ZR-1 General Postings 1 Day Ago
Replies: 2
Views: 80
Posted By bmarcum
First 1990 ZR-1 Vin runs

I own Vin 103 and I was sure that the first 100 cars were used for testing/show/Europe. I thought that for a very long time, but I zero proof and not sure that is right. I can't find any of my books....
Forum: C4 ZR-1 General Postings 1 Day Ago
Replies: 4
Views: 235
Posted By bmarcum
Re: Vin 2133 Polo Green and Tan

Funny. You would think I could type my old vin, but a "B" and "8" do look a like! ha ha.

Thanks @hotroddaddyo. Congrats on your new black Z!

Yes that is my first Z. Not sure what going on...
Forum: C4 ZR-1 General Postings 1 Week Ago
Replies: 4
Views: 235
Posted By bmarcum
Vin 2133 Polo Green and Tan

Any chance anyone knows where 1G1Yz23J5L5B02133 went. I sold it at Mecum Auto auction G69 in 2012. Any chance anyone knows were it went or that it may want to come back home to Indiana?
Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted 1 Week Ago
Replies: 13
Views: 3,799
Posted By bmarcum
Re: FS: 1990 ZR1; Black; 56k Miles; Hou. Texas

Congratulations @hotroddaddyo!.
Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted 1 Week Ago
Replies: 13
Views: 3,799
Posted By bmarcum
Re: FS: 1990 ZR1; Black; 56k Miles; Hou. Texas

Did you sell your Z on BAT? I looked for 1G1YZ23J0L5802184 on BAT but didn't see it.
Forum: C4 ZR-1 Technical Postings 04-02-2024
Replies: 0
Views: 315
Posted By bmarcum
Secondary fans

I need some help with my secondary fan. Long story short I can't find me FSM. Why primary fan is fine. My secondary fan comes on with ac, but will not come on at 230 degrees as it should. It only...
Forum: C4 ZR-1 General Postings 03-31-2024
Replies: 13
Views: 2,292
Posted By bmarcum
Re: Master Tech award & LT5 engine in Dinning room

Not sure why but I wasn't able to send you a private message. Please message me at your convenience I am interested. I like you love corvettes but the ZR-1 holds a special place in time for me! I...
Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted 02-15-2024
Replies: 15
Views: 2,352
Posted By bmarcum
Re: 19 Miles, 90 ZR-1 Selling Today Barrett Jackson

Thanks for the first hand account of the condition. That is a skill that is lost in the generation of the internet and BAT. BTW I am part of that but my dad was a master tech that began running...
Forum: Cleaning and Waxing 01-06-2024
Replies: 5
Views: 6,386
Posted By bmarcum
Re: Tried Tooth Paste on My Engine?

I have used 3m rubbing compound on the valve covers and intake to remove stains and hazing. Worked pretty well.
Forum: C4 ZR-1 Technical Postings 09-29-2022
Replies: 0
Views: 404
Posted By bmarcum
Throttle Cable

My throttle cable has stretched. Anyone ever experience this? You can see the slack at the throttle body. The cable or the "lock" must have slipped. I still need to diagnosis the real issues, but I...
Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted 05-23-2022
Replies: 54
Views: 8,675
Posted By bmarcum
Re: FS Single fuel pump conversion for LT5

I am very interested as well. What is the one wire that has to be disconnected from the ECM? How do you suggest disconnected it? What does the computer know/do? Also how best to order your set up....
Forum: C4 ZR-1 General Postings 04-14-2022
Replies: 34
Views: 2,831
Posted By bmarcum
VIN of the first ZR-1 sold to the pubic

I am interested to see how early of a car my 1990 is and couldn't find any info. I seem to remember that the serial numbers started at 100?
Forum: C4 ZR-1 Technical Postings 03-31-2021
Replies: 21
Views: 1,886
Posted By bmarcum
Re: Need an oracle! Low speed miss on cylinder #1 only.

Great point on the oscilloscope. That sounds like a great Idea. What is best for the LT5? I have a friend of a friend that has a old Sun engine analyzer for traditional distributor systems. I don't...
Forum: C4 ZR-1 Technical Postings 03-29-2021
Replies: 21
Views: 1,886
Posted By bmarcum
Re: Need an oracle! Low speed miss on cylinder #1 only.

The Gremlin is back. Grrrr! I am thinking about the ignition module, but not sure that it could be the problem. I know Jerry's Gasket has NOS, but they are $1300. I understand and appreciate his...
Forum: C4 ZR-1 Technical Postings 03-15-2021
Replies: 21
Views: 1,886
Posted By bmarcum
Re: Need an oracle! Low speed miss on cylinder #1 only.

I hate this kind of update, but I wanted to close the loop with everyone that made suggestions. I feel that I should give a little of my fathers and my back ground. My father was a master tech with...
Forum: C4 ZR-1 Technical Postings 03-13-2021
Replies: 21
Views: 1,886
Posted By bmarcum
Re: Need an oracle! Low speed miss on cylinder #1 only.

Does anyone know if the control module sets dwell for the coils individually? I feel from all the parameters that I have I am dealing with an ignition module that has weak component related to how GM...
Forum: C4 ZR-1 Technical Postings 03-13-2021
Replies: 21
Views: 1,886
Posted By bmarcum
Re: Need an oracle! Low speed miss on cylinder #1 only.

I am checking the weak spark by pulling the plug wires and letting it arch to the valve cover bolts. That is how I know the spark is weak on cylinder #1. All other cylinders have great spark! Also it...
Forum: C4 ZR-1 Technical Postings 03-12-2021
Replies: 21
Views: 1,886
Posted By bmarcum
Re: Need an oracle! Low speed miss on cylinder #1 only.

I noticed the miss driving down the interstate in 6th gear at low rpm. Then it became common. I was able to identify that it is on cylinder #1 by pulling all plug wires one at a time. It was easy to...
Forum: C4 ZR-1 Technical Postings 03-12-2021
Replies: 21
Views: 1,886
Posted By bmarcum
Re: Need an oracle! Low speed miss on cylinder #1 only.

Yes I believe the map hose is fine. How would the map cause an ignition miss? I am only seeing a weak spark on cylinder #1 intermittently.
Showing results 1 to 25 of 27
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