Forum: C4 ZR-1 Technical Postings
01-17-2024
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Replies: 14
Views: 7,525
Re: Horsepower difference ?
improved intake port alignment. Bit better heads and cams, improved exhaust and header/cats.
405 hp blocks also had 4 bolt mains and all of them were made in 1993
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Forum: C4 ZR-1 Technical Postings
06-14-2022
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Replies: 6
Views: 1,533
Re: Do base c4 wheels fit?
get some old cheap carpet sample squares. double them up and pull up and you won't flat spot
they make a fancy tire cradle out of foam, but the carpet samples are cheap and ez
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Forum: C4 ZR-1 Technical Postings
06-14-2022
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Replies: 8
Views: 1,248
Re: Track cooling recommendations
do some searches on posts from Tyler Townsley He did some very good write ups on the bypass and removing it.
If you spend LOTS of time above 6000 rpms and have a rad capable of the gpm flow and...
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Forum: C4 ZR-1 Technical Postings
06-14-2022
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Replies: 51
Views: 9,575
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Forum: C4 ZR-1 Technical Postings
05-20-2022
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Replies: 8
Views: 1,248
Re: Track cooling recommendations
the thick core dewitt and ron davis radiators do a great job
run a dedicated bigger oil cooler If you upgrade to the high quality radiators that can stand the pressure, you can get rid of the...
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Forum: C4 ZR-1 Technical Postings
05-20-2022
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Replies: 13
Views: 2,117
Re: Will 335 35 17 fit up front?
I have a set of CCW black center classics 17X12 up front and 17 X 12.5 in back
they have an older set of hoosiers mounted up. PM me if interested.
Not cheap but they allow 315 up front and...
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Forum: C4 ZR-1 Technical Postings
03-16-2022
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Replies: 69
Views: 17,600
Re: Which coil pack do you have?
wow, didn't know the magnecore had that guarantee. I think I still have them and might see if they stand up and replace the one wire that shat the bed
no critters, I was still driving the car...
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Forum: C4 ZR-1 General Postings
03-16-2022
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Replies: 6
Views: 1,088
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Forum: C4 ZR-1 General Postings
03-16-2022
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Replies: 102
Views: 104,919
Re: New Owners/National list of Z Shops
LSV still isn't done. Damn shame too as I miss driving it.
another GB TT is just what the Dr ordered!!!
I'm working on 3 vettes right now and none of em run. At least they will all be fast...
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Forum: C4 ZR-1 Technical Postings
03-07-2022
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Replies: 69
Views: 17,600
Re: Which coil pack do you have?
I know this is a very old thread, but so far I haven't seen any evidence of
1. fancy spark plugs
2. super conductor wires
3. coils that are "better" than factory
the gm stuff works and will...
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Forum: C4 ZR-1 General Postings
03-07-2022
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Replies: 102
Views: 104,919
Re: New Owners/National list of Z Shops
Amen~! some of my best times were hanging with Graham after John passed. Graham has forgotten more than we'll ever know and has built the lt5 in the most amazing configurations. Riding around...
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Forum: C4 ZR-1 Technical Postings
01-05-2022
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Replies: 16
Views: 2,402
Re: More Whoa Power
wow, those look awesome and it's cool retaining the hub emergency brake for less hassle. Bring er out to katies!! looking good.
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Forum: C4 ZR-1 Technical Postings
12-29-2021
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Replies: 27
Views: 4,032
Re: lost spark in cylinder 1
so we believe we have good DIS, coils, wires, spark plugs, but still no joy?? So within the electrical system likely we don't have a trigger for the coil to fire on the dead hole. This indeed...
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Forum: C4 ZR-1 Technical Postings
12-29-2021
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Replies: 25
Views: 6,623
Re: Weird stuttering issue
I was looking at adapting an ITB setup by making a custom base and using some ls3 parts adapted to the LT5 The kits are cheap enough, and we can whittle some prototype parts out of german ply, and...
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Forum: C4 ZR-1 Technical Postings
12-28-2021
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Replies: 25
Views: 6,623
Re: Weird stuttering issue
Hey Pete thanks!!
I tested and dynoed some of the fancy plugs and sure enough these did just as well if not better. Pete love to hear more about your engine and suspension tuning tricks on...
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Forum: C4 ZR-1 General Postings
12-28-2021
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Replies: 102
Views: 104,919
Re: New Owners/National list of Z Shops
unfortunately folks are moving on and working on the new vettes to pay the bills. Unless super urgent I'd wait!! I bought my car from Larry Merow rest his soul and vette dr took very good care...
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Forum: Mid-Atlantic Region
12-14-2021
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Replies: 24
Views: 8,645
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Forum: C4 ZR-1 Technical Postings
11-10-2021
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Replies: 6
Views: 1,273
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Forum: C4 ZR-1 General Postings
11-10-2021
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Replies: 11
Views: 1,905
Re: New LT5s
ahhhh the cam seizure engines
goes to show bullet proof not equal to I D 10 T proof
poor LT5s Thanks Jerry!!!
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Forum: OFF TOPIC
11-09-2021
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Replies: 1
Views: 3,925
Re: The king is dead. Long live the King.
this engine really does take NA to the next level
I'm amazed at the technology and the "ferrari like" intake tract, exh, and other features. Kicked everyone's butt with a GM product. Who would...
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Forum: C4 ZR-1 General Postings
11-09-2021
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Replies: 11
Views: 1,905
Re: New LT5s
a certain "corvette engine" surfaced in a storage bin for uber low $$
owner died and the storage company wanted it gone
after tear down to go stroker, it looked like a low mile new one...
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Forum: C4 ZR-1 Technical Postings
11-09-2021
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Replies: 3
Views: 1,091
Re: DRM coilovers
I have 400 front and 275 rear started with 425 front and 300 rear and it rode like a brick on the railroad tracks
350 up front will likely not be enough
definitely call DRM as they will go...
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Forum: LS9 Mechanical
03-17-2021
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Replies: 3
Views: 1,469
Re: Intercooler pump?
absolutely time to upgrade. Consider Kong porting the blower too as anything you can do to improve the efficiency and keep the intake charge cooler is a big help.
LS9 is such a sweet engine. ...
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Forum: C6 ZR1s and ZR1 Parts For Sale/Wanted
03-17-2021
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Replies: 0
Views: 3,840
owner bought 2013 anniversary wants another
good friend of mine bought a very nice 2013 Commemorative ZR-1 and likes the car so much he wants another matching one for the Ms.
I've found a few which is crazy, as they only made 138 or so of...
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Forum: C4 ZR-1 Technical Postings
03-09-2021
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Replies: 29
Views: 4,790
Re: Cam Position Sensor Removal
with the temp swings and oil batch jb weld might not last very long.
You would have to plastic weld that sensor case and it's that crappy hard plastic gm uses that is prone to cracking.
put...
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