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Forum: C4 ZR-1 Technical Postings 02-19-2023
Replies: 4
Views: 2,285
Posted By Helium3
ZR-1 Tuners NoVA and DC?

Hi All,


I've had Irene for a while and she hasn't run right. Very rich to say the least, and fouls out plugs very quick, not mention poor gas meilage etc. I've already taken her to DRM,...
Forum: C4 ZR-1 Parts For Sale / Wanted 12-03-2018
Replies: 0
Views: 634
Posted By Helium3
91 ZR-1 Gutted Roller Minus LT5 $3k OBO

Hi all,


This was originally the "ultralight" build that was ongoing at a certain shop in Fredericksburg VA but I have too many cars I've purchased over the years and would like to see this...
Forum: C4 ZR-1 General Postings 09-05-2018
Replies: 14
Views: 1,219
Posted By Helium3
Re: C8R DOHC LT-7 = FPC

Rumor mill I've heard is there will be some carryovers from current C7 generation ie 6.2 supercharged, and a very special DOHC with forced induction pushing far north of current C7 ZR1 levels. No...
Forum: C4 ZR-1 General Postings 09-04-2018
Replies: 103
Views: 126,327
Posted By Helium3
Re: New Owners/National list of Z Shops

Just wanted to say thanks for posting the list. Didn't know there was a LT5 shop out by Poulsbo, WA on the tier 1 list no less.



I visited Tony's Corvette last summer while getting another...
Forum: C4 ZR-1 General Postings 04-06-2017
Replies: 18
Views: 1,911
Posted By Helium3
Re: ZR-1 price variations?

It's a bit easier to get power out of the LT5's. My 96 LT4 has AFR heads, ram air, torquer cam, long tubes and 3" exhaust. Putting out about 480 at the crank. Irene, my white 91 Z has 500hp with...
Forum: C4 ZR-1 General Postings 04-05-2017
Replies: 18
Views: 1,911
Posted By Helium3
Re: ZR-1 price variations?

You'll have a much higher probability of success buying from a forum member. Getting one from a dealership, or even a 3rd party corner lot could give you unforeseen issues. Many of the maintenance...
Forum: C4 ZR-1 Parts For Sale / Wanted 04-04-2017
Replies: 0
Views: 929
Posted By Helium3
Irene is for Sale (White 91 ZR-1)

Hi All,

Not long after Dempsey at EME in Fredericksburg finished with all the upgrades to Irene I've decided to sell her and (3 other Corvettes in my collection). They're just going to sit...
Forum: C4 ZR-1 Technical Postings 03-11-2017
Replies: 11
Views: 3,601
Posted By Helium3
Re: "Irene" complete with Coil Overs!

For coilovers I would suggest Van Steel product. DRM kit was a pain to install. Serious relocating sway bar brackets, drilling into the frame. Van Steel comes with bracket relocation kit and just...
Forum: C4 ZR-1 Technical Postings 03-11-2017
Replies: 11
Views: 3,601
Posted By Helium3
Re: "Irene" complete with Coil Overs!

Seats are comfy. For around $500 a piece you get a cloth like covering. I suspect that's what makes sparco and recaros more expensive. Better quality Alcantara or suede. For the money still a...
Forum: C4 ZR-1 General Postings 03-11-2017
Replies: 22
Views: 3,034
Posted By Helium3
Re: 90 - 765

I've got 10 bucks that says Dempsey will buy this :-D
Forum: Northwest Region 03-09-2017
Replies: 2
Views: 10,810
Posted By Helium3
Re: Yakima vette a bration

I'll try to make it this year. Same dates in mid June??
Forum: C4 ZR-1 Parts For Sale / Wanted 03-09-2017
Replies: 12
Views: 3,575
Posted By Helium3
Re: C4 ZR-1 Parts for sale

For parts email/call Dempsey at EME. For building the 91 Snakeskinner it's literally going to be a shell of it's former self with possibly a 427 LT5. Everything removed. Basically an engine with...
Forum: C4 ZR-1 Parts For Sale / Wanted 03-09-2017
Replies: 15
Views: 4,276
Posted By Helium3
Re: 1990 ZR-1 Value

The current C4 market is sad to see. But the other issue is I can go out and buy a used 80k+ mile C5 Z06 for around 14k from a dealer, or a C6 Z06 for no joke 26k. It's a tough sell when it's easy...
Forum: C4 ZR-1 Parts For Sale / Wanted 02-15-2017
Replies: 12
Views: 3,575
Posted By Helium3
C4 ZR-1 Parts for sale

With all the parts removed from Dempsey's Irene and the Ultralight 378 build, tons of good items are available. C4 ZR-1 parts are off two 91's. One having 50k miles and the other 100k. For big...
Forum: C4 ZR-1 General Postings 02-04-2017
Replies: 31
Views: 6,118
Posted By Helium3
Re: Shopping for 1st ZR-1

All I can say is that:

1. You need to have a devout love for these cars, and be 110% sure you want a ZR-1.

2. These cars are going on 30 years old and operations and maintenance support for...
Forum: C4 ZR-1 General Postings 09-29-2016
Replies: 26
Views: 4,502
Posted By Helium3
Re: 2017 GS or Z06?

My experience with buying factory cars is to buy the Z06 or ZR1 models. I made the "mistake" of buying a 2005 Z51 first and then within 2 years traded for a 2007 Z06 for the kicka$$ 427. If you...
Forum: C4 ZR-1 Technical Postings 09-23-2016
Replies: 44
Views: 8,506
Posted By Helium3
Michelin PS2 335/35/17 back in production

I saw on Tire Rack Gen I Viper rears are back in production. 1-2 Month back order. For the longest time I didn't see them except people trying to gouge customers on ebay for up to 1900 for just the...
Forum: C4 ZR-1 General Postings 09-21-2016
Replies: 8
Views: 2,450
Posted By Helium3
Re: Average day at our shop

Almost fell out of my chair with the Facebook comment. Too funny.
Forum: C4 ZR-1 Technical Postings 08-22-2016
Replies: 8
Views: 3,441
Posted By Helium3
Re: LT5 Engine Component Weights

I don't question the LT5 crank build. At 1/10th the cost of a Bryant crank it's a worthwhile trade-off. I'm finally taking the plunge on the Snake Skinner build and figuring where weight savings can...
Forum: C4 ZR-1 Technical Postings 08-22-2016
Replies: 8
Views: 3,441
Posted By Helium3
Re: LT5 Engine Component Weights

Thank you for the weight comparison with the LT4 build. I figured there was a good 12+ lbs of weight that could be theoretically saved.
Forum: C4 ZR-1 Technical Postings 08-22-2016
Replies: 8
Views: 3,441
Posted By Helium3
Re: LT5 Engine Component Weights

60 lbs for a crank? Thought my LS7 OEM one was bad at 56+ lbs. I saved almost 10 lbs on a 406 build going from stock cast LS6 one to a Scat Forged lightweight unit.


Thanks for the weights.
Forum: Northwest Region 08-09-2014
Replies: 7
Views: 6,980
Posted By Helium3
Re: Anyone out here in the NW?

:razz: Darn...XXX Root beer is just a brand. Thought it was a hybrid of hoots and root beer.

I plan on showing up in the bone stock 91Z.
Forum: Northwest Region 11-21-2013
Replies: 5
Views: 7,311
Posted By Helium3
Re: yakima vettebration

I'm still figuring out these cars as well. Arguably my favorite of all the Corvette models despite a weight handicap. The engine is definitely heavier than the pushrods, but then the exhaust,...
Forum: Northwest Region 11-19-2013
Replies: 5
Views: 7,311
Posted By Helium3
Re: yakima vettebration

There's one alive in the PNW part time :) I'll be moving back to Warshington permanent spring next year. I'm on the west side though. Out by Tacoma.
Forum: C4 ZR-1 Parts For Sale / Wanted 10-23-2013
Replies: 27
Views: 5,756
Posted By Helium3
Re: FS 1990 ZR-1

Pardon my lack of regular visits. I'm still interested. As long as everything mechanically is great and I can drive it back to VA, and back across country to west coast I'd like to buy it. Would...
Showing results 1 to 25 of 34
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