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#1 |
![]() Join Date: Dec 2019
Location: st louis mo
Posts: 748
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On that issue, 373 gears or 410? And aluminum flywheel or no? What's everyones experience. I'm getting ready to this in a few weeks
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95 admiral blue z(sold)/ / 93 ruby z(sold) 91 steel blue z/95 aqua z haibeck 510, 91 callaway 415 areobody #5 |
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#2 |
Join Date: Aug 2005
Location: Scottsdale, AZ
Posts: 2,450
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Great choice, I would go 410, you will need 4th in 1/4 mile, only taching about 2200 at 75 mph, still good gas miles, stay away from alum flywheel due to noise from trans, some can be mitigated, you will give up a few HP without it
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#3 |
![]() Join Date: Aug 2012
Location: Ellicott City, MD
Posts: 1,677
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I have 410's and stock dual mass and am very happy with them. Have thought about 373 as 1st and 2nd are short with the 410 but on the highway they are awesome and it pulls very well in 6th. You can't go wrong with either gearing and I also agree with PhillipsLT5 about the alum flywheel unless you do not care about the rattle.
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Charlie __________ Dredgeguy WAZOO Member 1992 Bright Red/Black ZR1 #246 Dana 4:10 gears Polished LT5 by Haibeck Polished Fikse FM5's with Michelin Pilot Sport 2 Stainless Works headers and cats with Corsa |
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#4 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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4.10s and Fidanza. However, I have 18/19in. Z06 wheels so tires turn as if I have ~3.55 gear. 80mph@~2100rpm.
Fidanza rattle is only there at neutral idle, albeit good trans oil helps quell that along w a good tune.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX Last edited by XfireZ51; 10-26-2020 at 09:13 AM. |
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#5 |
![]() Join Date: Mar 2018
Location: Norway
Posts: 345
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We got both 4.10 gears and lightweight flywheel in our 470 HP car, and even if there is some rattle the quick response the flywheel gives outweighs the noise for me.
Sent from my SM-G955F using ZR-1 Net Registry mobile app
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Roy Martin 1994 ZR-1 #112 Admiral Blue/Black Dana 4:10 Aluminum flywheel Corsa exhaust Watson headers Haibeck chip 470 HP/399 RWHP 1991 ZR-1 #400 White/Red (SOLD) Dana 4:10 Powder coated engine Haibeck performance chip Borla exhaust |
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#6 | |
![]() Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,067
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2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" Last edited by WARP TEN; 10-26-2020 at 10:41 AM. |
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#7 |
![]() Join Date: Feb 2006
Location: Springfield, Minnesota
Posts: 446
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I also have Marc's 510 package and love it.
I do have the transmission noise that comes along with the light weight fly wheel. The noise in neutral is not that bad and doesn't bother me. What can be more aggravating at times is the noise that my car experiences that comes about under low rpms and/or light load applications. Just cruising or going down the road at a steady state speed under 2,x00ish rpm and the transmission noise isn't the most pleasant. I haven't come to a conclusion yet about whether I would rather have the quick free revving nature of the light flywheel or the quiet of the dual mass unit. Not too much of a problem if you keep the rpms higher, but I don't always drive the car that way. Marc mentions on his website that Redline transmission oil mitigates much of this. My 510 package was done in 2014. I wonder if Marc used the Redline at the time of my modifications? I will have to ask about this. Regardless, I love my 510 package. |
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#8 |
![]() Join Date: Mar 2019
Location: Austin, TX
Posts: 45
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With Marc's 510 package you may consider splitting the difference with 3.90 gears. I had a 91 that came with an LPE 368 and 4.09 gears. The car would hardly ever hold traction from a 2nd gear roll. I switched the rear tires to drag radials and always drove it that way. The next owner swapped the 4.09s out for a longer gear. My 94 has 3.90s, driveability is very good and it hooks well on regular tires.
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93 ZR-1 Red/Red 415ci Jeal cams/headers, hf cats, B&B Wilwood brakes, DRM coilovers 94 ZR-1 Red/Blk 368ci SW headers, hf cats, Corsa 16 GT-R Blk/Blk Stg1 3.8 BL1200X, Shep1k, Motec 1250 whp on pump e85 |
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#9 |
![]() ![]() Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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I have the Fidanza and love it - especially in the lower gears (where rpms increase is quickest). I have the Nitto 555R (drag radials) on the car and on clean warm pavement they'll grip pretty well if the clutch is all the way out to begin with - pure throttle (in other words). Marc set my idle at 850ish so it has no rattle in spite of the Fidanza, tho too I have stock cams. I LOVE the Fidanza. I have the stock 3.45 gear, BTW.
Ami's (514 HP Z (with a 410 gear), also has the Fidanza. But, with Pete's reground cam overlap the trans rattles like a "box of rocks" at idle in neutral. But, with the B&B 3" exhaust, the rattle mitigated to the point it is barely noticeable from inside the car at least. ![]() On the street with the stock rear (3.45) gear, the least bit aggressive start in 1st gear and traction becomes "iffy" - even with a heavy throttle only rev through the tach, the 555R Nittos will break. Ami's Z with (essentially) the same HP and tires, but with the 410s is a different story. It will break traction on warm, dry pavement regularly at will in 1st gear w/o involving the clutch. 2nd gear on the street w/ the 410s is just too much shifting, so the 1-3-5 shifts is normal for her car...and pretty much the same for my 3.45 gear as well, come to think of it. Anywayz....I love the Fidanza with either the 3.45 or the 410 gears, tho I agree too that a 373 or 390 might be "perfect" for me. In any case, the Fidanza stays! AND, if running the mountain twisties is your thing too, and/or running beyond the 1/4 mile trap speed, the 3.45 (I find) is quite excellent. (I can run the "Tail of the Dragon" mostly in 2nd gear - keeping right on top of the torque curve.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry Last edited by Paul Workman; 10-27-2020 at 07:01 AM. |
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#10 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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Wasn?t Lingenfelter?s preferred gear a 3.91 for the ZR? Anyone recall?
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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