Transmission Swap Question
Thread Starter
Melting Slicks
Joined: Oct 2004
Posts: 2,662
Likes: 8
From: Knoxville Tennessee
Transmission Swap Question
I have found a '91 Vert that I am interested in. It has an auto trannsmission and I was wondering how hard it was to swap to a manual in this car? And what manual transmissions are best suited for this swap. Your input is genuinely appreciated.
Bernie
Bernie
Melting Slicks
Joined: Oct 2001
Posts: 2,315
Likes: 110
From: Brandon Fl
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Originally Posted by Steve87VETTE
-- Joe
Advanced
Joined: Nov 2005
Posts: 64
Likes: 1
From: Monroe NJ
I Did A Custom Transmission Swap
I have a 1985 Corvette with 60,000 miles on it. I got rid of my 4+3 and I installed a richmond 6-spd with a billet aluminum Hays flywheel, centerforce clutch and pressure plate. I had to cut the fiberglass pocket off of my car. The pocket holds the shifter assembly for the 4+3 transmission. The trans that I got straight from richmond came with a custom tailshaft and gear ratios of my choice. I hated the idea of cutting my body, but now I love driving my rare '85 6SPD. This goes good with my new Dana 44 with 3.73 rear end. My car is also chipped, full stainless steel 2.5" Exhaust, (mandrel bent off road front y-pipe, High flow 3" cat, and borla cat-back system) and the ignition is done-that is all with performance for now. My newest item is my 18" x 9.5" chrome 2006 ZO6 wheels! 275/35/28 and 295/35/18. Pictures comming soon! 
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Drifting
Joined: Mar 2002
Posts: 1,251
Likes: 2
From: Thomson Georgia
Just finished another conversion to 6 speed.
Figure for the master, slave, spacer, clutch line and pedals $ 550 Don't forget a heat shield for the slave.
for the transmission and a bellhousing, fork, pivot $ 12-1500
for the yoke $75
for the clutch, pressure plate, flywheel, etc. $ 800-1200
for the console pieces, unless you modify yours $ 100
for SMC tunnel mods $50
$2775 - $3475
you can save some funds by using the stock clutch, pp, flywheel,
used parts, but why? -$500-900
And of course, there's the Dana 44, that Dana 36 with 2.59-2.73-3.07s is going to be hell on the clutch and the pocket book when it breaks. You can cryo and gear it for $600 or so, less if you can gear it yourself.
Now, the interesting part, it's a 91 convertible, late style body, L98.
johnny
Figure for the master, slave, spacer, clutch line and pedals $ 550 Don't forget a heat shield for the slave.
for the transmission and a bellhousing, fork, pivot $ 12-1500
for the yoke $75
for the clutch, pressure plate, flywheel, etc. $ 800-1200
for the console pieces, unless you modify yours $ 100
for SMC tunnel mods $50
$2775 - $3475
you can save some funds by using the stock clutch, pp, flywheel,
used parts, but why? -$500-900
And of course, there's the Dana 44, that Dana 36 with 2.59-2.73-3.07s is going to be hell on the clutch and the pocket book when it breaks. You can cryo and gear it for $600 or so, less if you can gear it yourself.
Now, the interesting part, it's a 91 convertible, late style body, L98.
johnny
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Originally Posted by johnnyevans
Just finished another conversion to 6 speed.
Figure for the master, slave, spacer, clutch line and pedals $ 550 Don't forget a heat shield for the slave.
for the transmission and a bellhousing, fork, pivot $ 12-1500
for the yoke $75
for the clutch, pressure plate, flywheel, etc. $ 800-1200
for the console pieces, unless you modify yours $ 100
for SMC tunnel mods $50
$2775 - $3475
you can save some funds by using the stock clutch, pp, flywheel,
used parts, but why? -$500-900
And of course, there's the Dana 44, that Dana 36 with 2.59-2.73-3.07s is going to be hell on the clutch and the pocket book when it breaks. You can cryo and gear it for $600 or so, less if you can gear it yourself.
Now, the interesting part, it's a 91 convertible, late style body, L98.
johnny
Figure for the master, slave, spacer, clutch line and pedals $ 550 Don't forget a heat shield for the slave.
for the transmission and a bellhousing, fork, pivot $ 12-1500
for the yoke $75
for the clutch, pressure plate, flywheel, etc. $ 800-1200
for the console pieces, unless you modify yours $ 100
for SMC tunnel mods $50
$2775 - $3475
you can save some funds by using the stock clutch, pp, flywheel,
used parts, but why? -$500-900
And of course, there's the Dana 44, that Dana 36 with 2.59-2.73-3.07s is going to be hell on the clutch and the pocket book when it breaks. You can cryo and gear it for $600 or so, less if you can gear it yourself.
Now, the interesting part, it's a 91 convertible, late style body, L98.
johnny
Is their a better site for this type of technical info? I've searched posts
and can't find as much as I'd thought i'd find.
How do 4+3 bell housings differ from the ZF ? maybe I need both a '91 and '87 helms manuals.
Dana 36 gears seem kinda cheap in the summit catalogue. I can't imagine they're much harder to setup than a 10 bolt. ?? I know they're suposedly weaker due to the 7.5" ring gear (like a fbody 10 bolt), wonder if the same things make 'em stronger (girdle, cap supports, etc). ?
-- Joe
Melting Slicks
Joined: Jan 2002
Posts: 2,238
Likes: 4
From: Milan
Originally Posted by johnnyevans
Just finished another conversion to 6 speed.
Figure for the master, slave, spacer, clutch line and pedals $ 550 Don't forget a heat shield for the slave.
for the transmission and a bellhousing, fork, pivot $ 12-1500
for the yoke $75
for the clutch, pressure plate, flywheel, etc. $ 800-1200
for the console pieces, unless you modify yours $ 100
for SMC tunnel mods $50
$2775 - $3475
you can save some funds by using the stock clutch, pp, flywheel,
used parts, but why? -$500-900
And of course, there's the Dana 44, that Dana 36 with 2.59-2.73-3.07s is going to be hell on the clutch and the pocket book when it breaks. You can cryo and gear it for $600 or so, less if you can gear it yourself.
Now, the interesting part, it's a 91 convertible, late style body, L98.
johnny
Figure for the master, slave, spacer, clutch line and pedals $ 550 Don't forget a heat shield for the slave.
for the transmission and a bellhousing, fork, pivot $ 12-1500
for the yoke $75
for the clutch, pressure plate, flywheel, etc. $ 800-1200
for the console pieces, unless you modify yours $ 100
for SMC tunnel mods $50
$2775 - $3475
you can save some funds by using the stock clutch, pp, flywheel,
used parts, but why? -$500-900
And of course, there's the Dana 44, that Dana 36 with 2.59-2.73-3.07s is going to be hell on the clutch and the pocket book when it breaks. You can cryo and gear it for $600 or so, less if you can gear it yourself.
Now, the interesting part, it's a 91 convertible, late style body, L98.
johnny
But if you have to pay someone you can add $200 to $300.
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Originally Posted by conv90
In addition you should upgrade the Chip. Nothing difficult if you are able to manage chips and ECM things...
But if you have to pay someone you can add $200 to $300.
But if you have to pay someone you can add $200 to $300.
I'm probably gonna run the 700R4 for a while until it blows up, with just a converter and a shift kit, but i'd like to get the pedals and hydraulics in while the motor is out.
-- Joe