6 speed trans
Thread Starter
Burning Brakes
Joined: Oct 2011
Posts: 1,093
Likes: 2
From: long beach California
6 speed trans
so guys does any one have a link to any pages on auto 350th trans conversion to a 6 speed
i am curious how the trans shifter will match up to the stock hole in the floor pan
how does the hydraulic clutch reservoi and linkage mount up is it in the way or cause anything to be removed to make it fit
has anyone mounted a 6 speed to a stock engine? i am pretty sure i want an lt1 6 speed camaro set up. just wondering what you guys think. is it worth the trouble does it make the car so much different that i will want ot drive it more often (la traffic) does it make the fuel mileage reasonable 15-20 mpg is that possible?
i figure this will cost me at least $3-5k am i dreaming or is that do able
i am curious how the trans shifter will match up to the stock hole in the floor pan
how does the hydraulic clutch reservoi and linkage mount up is it in the way or cause anything to be removed to make it fit
has anyone mounted a 6 speed to a stock engine? i am pretty sure i want an lt1 6 speed camaro set up. just wondering what you guys think. is it worth the trouble does it make the car so much different that i will want ot drive it more often (la traffic) does it make the fuel mileage reasonable 15-20 mpg is that possible?
i figure this will cost me at least $3-5k am i dreaming or is that do able
Drifting
Joined: Mar 2004
Posts: 1,450
Likes: 40
From: Panama City Beach, Florida
so guys does any one have a link to any pages on auto 350th trans conversion to a 6 speed
i am curious how the trans shifter will match up to the stock hole in the floor pan
how does the hydraulic clutch reservoi and linkage mount up is it in the way or cause anything to be removed to make it fit
has anyone mounted a 6 speed to a stock engine? i am pretty sure i want an lt1 6 speed camaro set up. just wondering what you guys think. is it worth the trouble does it make the car so much different that i will want ot drive it more often (la traffic) does it make the fuel mileage reasonable 15-20 mpg is that possible?
i figure this will cost me at least $3-5k am i dreaming or is that do able
i am curious how the trans shifter will match up to the stock hole in the floor pan
how does the hydraulic clutch reservoi and linkage mount up is it in the way or cause anything to be removed to make it fit
has anyone mounted a 6 speed to a stock engine? i am pretty sure i want an lt1 6 speed camaro set up. just wondering what you guys think. is it worth the trouble does it make the car so much different that i will want ot drive it more often (la traffic) does it make the fuel mileage reasonable 15-20 mpg is that possible?
i figure this will cost me at least $3-5k am i dreaming or is that do able
Sorry, no links,
You can get the shifter to end up in the stock console spot with an adapter,, you have to modify the tunnel hole but not too bad,
I mounted the hydraulic clutch res on the firewall with a fabbed bracket and rod, easy.
Made an adapter to use the stock crossmember, easy.
new driveshaft with proper yokes.
I'm at about 1800 rpm at 80mph with a 4.10 gear,
I NEVER worry about my mpg, but I'd say it would be decent if I could keep my foot out of it.
There are numerous threads on the so try a search for more help,
Frank
Last edited by myoriginal77; Aug 1, 2012 at 03:38 AM. Reason: typo
Burning Brakes
Joined: Mar 2012
Posts: 871
Likes: 73
From: Memphis Tennessee
You won't really have a hole in the floor if you currantly have an auto. Just a small hole for the cable and a "pocket" for the shifter assembly to sit in.
The "pocket" will have to be cut out, to get the six speed high enough in the tunnel.
Hydraulics:
The beauty of hydralics is you can run them in any way that works on your car. There is a cover on the firewall (designed for clutch linkage on manual cars) that can be removed for mounting the master. You'll have to find a spot for the reservoir, wherever you have room! I mounted mine behind the booster, but I have hydroboost and it takes up less room.
You can get special fitting to adapt an AN line to the stock slave cylinder. I was using the stock setup from a Camaro, but still had to get new lines because the stock one wasn't long enough.
Crossmember mod: If you can't weld, Custom Image Corvettes has the only bolt in I know of.
The "pocket" will have to be cut out, to get the six speed high enough in the tunnel.
Hydraulics:
The beauty of hydralics is you can run them in any way that works on your car. There is a cover on the firewall (designed for clutch linkage on manual cars) that can be removed for mounting the master. You'll have to find a spot for the reservoir, wherever you have room! I mounted mine behind the booster, but I have hydroboost and it takes up less room.
You can get special fitting to adapt an AN line to the stock slave cylinder. I was using the stock setup from a Camaro, but still had to get new lines because the stock one wasn't long enough.
Crossmember mod: If you can't weld, Custom Image Corvettes has the only bolt in I know of.
Drifting
Joined: May 2005
Posts: 1,968
Likes: 44
From: East TN
I just did a 4 to 6 speed conversion and hydraulic clutch. I'm currently working on an adapter to move my shifter, so I can put my console back in. Much better than the 4 speed with mechanical clutch. 
I have just under $2500 in it and still have some of my old parts left to sell.
http://forums.corvetteforum.com/c3-t...aigs-list.html
I have just under $2500 in it and still have some of my old parts left to sell.http://forums.corvetteforum.com/c3-t...aigs-list.html
Le Mans Master
Joined: Sep 2004
Posts: 5,116
Likes: 5
From: Livonia MI
Based on experience, I'd say 20+ highway with a double od 6 speed tranny, is very possible. I had an LT1 in a mid 90's Camaro, and no problem. The engine is a bit of a step child though, and known to develop it's share of oil leaks. Think I'd just make the leap to LS. There's several members here that have done it, and believe it's member "Gordonm" that documented the swap in several of his posts. I've had a couple late model LS Vette's, with my current C6 being an LS7. With factory 3.42 axle, 25 mpg highway, all day long.
Thread Starter
Burning Brakes
Joined: Oct 2011
Posts: 1,093
Likes: 2
From: long beach California
wow awesome oyu guys this is exactly what i was looking for.
i have decided after looking at craigslist to go with a ls2 an 6 speed packaged together. By buying either a camaro or firebird. I can get one of those cars right now on cl for around $3k-4500. Then just take the engin,trans,and harnesses out of the car put it in my 79. To make it less expensivei would just sell the car shell with title when i am done with.
I have acces to several different welders at work an could easily do the mod in the picture above. Is the notch cut into the cross memeber, in you picture all that you had to do to it learningcurve?
i have decided after looking at craigslist to go with a ls2 an 6 speed packaged together. By buying either a camaro or firebird. I can get one of those cars right now on cl for around $3k-4500. Then just take the engin,trans,and harnesses out of the car put it in my 79. To make it less expensivei would just sell the car shell with title when i am done with.
I have acces to several different welders at work an could easily do the mod in the picture above. Is the notch cut into the cross memeber, in you picture all that you had to do to it learningcurve?
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Burning Brakes
Joined: Mar 2012
Posts: 871
Likes: 73
From: Memphis Tennessee
Just about, also had to clearance the bottom for the fasteners since the slots are moved forward. I cut a angled section of out the crossmember. The slotted holes on mine needed to move forward just a bit, so I mad the cut on top as close as I could get to the slots, then flipped the piece 180 and welded it back in. This brought the holes to the front of the crossmember.
Every car is going to be a little different, so I suggest mocking it up before cutting. Remove the rubber trans mount from the back of the trans, and intall the crossmember to see where the trans rests on it. To get it this high you will need to already have the whole for the shifter, or remove it before hand.
Every car is going to be a little different, so I suggest mocking it up before cutting. Remove the rubber trans mount from the back of the trans, and intall the crossmember to see where the trans rests on it. To get it this high you will need to already have the whole for the shifter, or remove it before hand.
Burning Brakes
Joined: Apr 2007
Posts: 1,039
Likes: 62
From: Kona Hawaii
Did a Richmond 6spd swap from a TH350.Richmond trans is the same length as the TH350. My write up:http://forums.corvetteforum.com/c3-t...am-change.html
6spd Richmond works very well with my 3.08 rear gear.If you do the LS2 6 spd swap you may want to change your rear gear to match that trans(added costs).A 3.08 rear gear may not work well with that double OD.Good luck with your build....
6spd Richmond works very well with my 3.08 rear gear.If you do the LS2 6 spd swap you may want to change your rear gear to match that trans(added costs).A 3.08 rear gear may not work well with that double OD.Good luck with your build....