My rising shifter - Page 2 - ZR-1 Net Registry Forums

efnfast · 09-05-2022

Alright, right over my head. Make a 410 out of it? Gears? Cubes?

HAWAIIZR-1 · 09-05-2022

Has anyone tried these Afterdark motor mounts?

High-performance direct replacement engine mount kit for 90-95 ZR1 LT5 and 92-96 LT1/LT4 Corvettes.

This unique mount design still uses bushings, but they are smaller and firmer than the large factory rubber isolators. They offer a nice balance of vibration damping vs. engine movement for most performance street applications where additional strength and support is desired without the extreme harshness of solid mounts.

This mount design comes pre-assembled in the factory C4 mounting position, but uses a unique adjustable aluminum spacer design. The engine can be lowered up to 3/4" from stock in 1/4" increments if desired. The engine can also be shifted fore-aft 1/2" in either direction in 1/4" increments.

This mount assembly is lighter and smaller than factory mount for better header clearance as well.

All parts are powder coated and anodized black.

100% made in USA

https://www.ebay.com/itm/30324974920...mis&media=COPY

Sent from my iPhone using ZR-1 Net Registry

1991 Corvette ZR-1 · 09-05-2022

Quote:

Originally Posted by efnfast

Alright, right over my head. Make a 410 out of it? Gears? Cubes?

I believe Young is referring to the rear gear set. Or maybe what he meant to type was 415. For the cost of a 415 engine, you could probably do a 4.10 gear change for yourself and eleven of your friends with Vettes who needed 4.10s as well!

efnfast · 09-18-2022

Finally took Bertha out. Shifter doesn't budge. Marc was right (not that I had any doubts).
I owe you dinner Marc. Even felt good at 130. Thanks everybody for your help and suggestions. - Steve

Paul Workman · 09-21-2022

Q on the beam plates: If the beam plates are used, I would suspect that the issue with cold flowing (denoted by the ridge build-up around the circumference of the washers under the nuts - primarily on aluminum parts or parts with significant thrust forces applied) wouldn't be and issue as the plates are steel; the nuts/washers do not rest directly on the aluminum C-beam, but rather the beam is sandwiched between the steel plates and the transmission...Right?

Those are some BIG bolts (fastening the C-beam to the trans and differential housings). I "leaned on torque wrench" a bit more than the stock recommendation intended for aluminum C-beams w/o steel plates. The shifter has never budged (risen) in 10+ years FWIW.

efnfast · 09-22-2022

Correct Paul, the beam plates are between the bolt and the C beam, where a washer would go. I also "leaned" on mine a little extra.

tf95ZR1 · 09-23-2022

Been there, done that.
Gear shifter lift:
http://www.zr1.net/forum/showthread....ht=beam+plates

Overtorque:
http://www.zr1.net/forum/showthread....+plates&page=4
See post #33.

09-05-2022	#11
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,237	Re: My rising shifter Alright, right over my head. Make a 410 out of it? Gears? Cubes?

09-05-2022	#12
HAWAIIZR-1 Join Date: May 2010 Location: Japan Posts: 3,538	Re: My rising shifter Has anyone tried these Afterdark motor mounts? High-performance direct replacement engine mount kit for 90-95 ZR1 LT5 and 92-96 LT1/LT4 Corvettes. This unique mount design still uses bushings, but they are smaller and firmer than the large factory rubber isolators. They offer a nice balance of vibration damping vs. engine movement for most performance street applications where additional strength and support is desired without the extreme harshness of solid mounts. This mount design comes pre-assembled in the factory C4 mounting position, but uses a unique adjustable aluminum spacer design. The engine can be lowered up to 3/4" from stock in 1/4" increments if desired. The engine can also be shifted fore-aft 1/2" in either direction in 1/4" increments. This mount assembly is lighter and smaller than factory mount for better header clearance as well. All parts are powder coated and anodized black. 100% made in USA https://www.ebay.com/itm/30324974920...mis&media=COPY Sent from my iPhone using ZR-1 Net Registry __________________ Craig "ZR-1 NO KA 'OI" "ZR-1 ICHIBAN" 1995 #228 Black/Black with Dunn Heads ZR-1 owner since September 2003 ZR-1 Net Registry Founding Member #0074 NCM Lifetime Member #2048

09-18-2022	#14
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,237	Re: My rising shifter Finally took Bertha out. Shifter doesn't budge. Marc was right (not that I had any doubts). I owe you dinner Marc. Even felt good at 130. Thanks everybody for your help and suggestions. - Steve

09-21-2022	#15
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,493	Re: My rising shifter Q on the beam plates: If the beam plates are used, I would suspect that the issue with cold flowing (denoted by the ridge build-up around the circumference of the washers under the nuts - primarily on aluminum parts or parts with significant thrust forces applied) wouldn't be and issue as the plates are steel; the nuts/washers do not rest directly on the aluminum C-beam, but rather the beam is sandwiched between the steel plates and the transmission...Right? Those are some BIG bolts (fastening the C-beam to the trans and differential housings). I "leaned on torque wrench" a bit more than the stock recommendation intended for aluminum C-beams w/o steel plates. The shifter has never budged (risen) in 10+ years FWIW. __________________ 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

09-22-2022	#16
efnfast Join Date: Nov 2011 Location: Dunbarton NH Posts: 7,237	Re: My rising shifter Correct Paul, the beam plates are between the bolt and the C beam, where a washer would go. I also "leaned" on mine a little extra.

09-23-2022	#17
tf95ZR1 Join Date: Aug 2005 Location: Northridge, CA Posts: 1,445	Re: My rising shifter Been there, done that. Gear shifter lift: http://www.zr1.net/forum/showthread....ht=beam+plates Overtorque: http://www.zr1.net/forum/showthread....+plates&page=4 See post #33. __________________ 1995 ZR-1 #106 Blk/ Blk Owned by me since 2000. 91K miles, but not on motor :-) Mods the way I want it, Not afraid to drive it!