ls1-4l60e 68 corvette, convert to manual
#1
ls1-4l60e 68 corvette, convert to manual
Title says it, looking to change up my current setup and go to a 5 or 6 speed manual. I did the 4l60e because I was driving the car 4 -6 k miles a year with a bad left hip. Now I'm down to under 2000 and rather have the manual for when I do drive it. Looking for pointers on what manual will be easiest swap for the 4l60e on a c3 vette considering I already have conversion mount and driveshaft yoke for the 4l60e. Car last dynoed at 351 rwhp before the ls6 intake and 80mm tb, so it's not a trans killer. Line lock is for fun burnouts
Thanks! -Eric
Thanks! -Eric
#3
#6
#7
What's your rear end ratio. With That few miles, you might want to consider a T10 4 speed that fits your ratio. No tunnel mods, stock z bar linkage, etc. If only Richmond still offered their 6 speed.
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#8
Yeah if your rear end is ANYWHERE north of 3.55:1 you will want a tranny with OD. Less, the T-10 will work OK
#9
#10
Yep and the next thing your looking for was a suitable ring and pinion. That's what makes modifications so much fun! Your most likely going to end up needing to modify something else....
#11
I haven't done a T56 swap in a C3, I used a 4L60E for my LS swap. I would be shocked if the T56 fits without a pretty good amount tunnel mods. The T56 is long and quite square at the top. Not saying it's not a good swap just needs more work.
I have a T56 magnum in my 68 C10. I looked for used T56 so some time. Most had high miles that needed freshening at least or a total overhaul. So I ended up buying a new magnum. I used a LS7 clutch and flywheel along with a 2000ish Camaro slave cylinder. Has worked great. There is a guy on the C10 site that goes by Captain Fab and he makes a great brake booster mount for C10's that includes a master cylinder mount along the correct linkage for the clutch pedal to the master. I don't know if he has anything for a C3 but it's worth asking the question. On my C10 I'm using a Wilwood 3/4 inch master. Good luck with your swap.
I have a T56 magnum in my 68 C10. I looked for used T56 so some time. Most had high miles that needed freshening at least or a total overhaul. So I ended up buying a new magnum. I used a LS7 clutch and flywheel along with a 2000ish Camaro slave cylinder. Has worked great. There is a guy on the C10 site that goes by Captain Fab and he makes a great brake booster mount for C10's that includes a master cylinder mount along the correct linkage for the clutch pedal to the master. I don't know if he has anything for a C3 but it's worth asking the question. On my C10 I'm using a Wilwood 3/4 inch master. Good luck with your swap.
#12
I haven't done a T56 swap in a C3, I used a 4L60E for my LS swap. I would be shocked if the T56 fits without a pretty good amount tunnel mods. The T56 is long and quite square at the top. Not saying it's not a good swap just needs more work.
I have a T56 magnum in my 68 C10. I looked for used T56 so some time. Most had high miles that needed freshening at least or a total overhaul. So I ended up buying a new magnum. I used a LS7 clutch and flywheel along with a 2000ish Camaro slave cylinder. Has worked great. There is a guy on the C10 site that goes by Captain Fab and he makes a great brake booster mount for C10's that includes a master cylinder mount along the correct linkage for the clutch pedal to the master. I don't know if he has anything for a C3 but it's worth asking the question. On my C10 I'm using a Wilwood 3/4 inch master. Good luck with your swap.
I have a T56 magnum in my 68 C10. I looked for used T56 so some time. Most had high miles that needed freshening at least or a total overhaul. So I ended up buying a new magnum. I used a LS7 clutch and flywheel along with a 2000ish Camaro slave cylinder. Has worked great. There is a guy on the C10 site that goes by Captain Fab and he makes a great brake booster mount for C10's that includes a master cylinder mount along the correct linkage for the clutch pedal to the master. I don't know if he has anything for a C3 but it's worth asking the question. On my C10 I'm using a Wilwood 3/4 inch master. Good luck with your swap.
#13
I've been on the road for work so out of thread, and car out for paint. Rear is a 3.08. I've looked at the new custom made magnums, pricey but they'll build to my spec. I'm just a junkyard hound and the fun is in doing it cheaper than the guy at the cars & coffee who buys everything new and has a shop put it in (you know that guy, tons of money, changes cars ever couple of years). If I can do with a j'yard tranny, even if I have to refresh it first, that's cool.
#14
With a 3.08 rear you'll need to get a new trans with around a 3.0 1st gear and probably nothing over a 0.6 OD. Changing the corvette rear ratio is kind of expensive. Add to that the addition of a clutch pedal assembly.
If you're looking for a cheap junkyard solution, a corvette pedal assembly and 2.88 1st gear corvette T10 would be a solution that wouldn't break the bank.
I put a Richmond 6 speed (3.28 1st, 0.76 6th) with the 3.08 rear in my 6.0 LS 68 corvette swap. Almost perfect gears.
If you're looking for a cheap junkyard solution, a corvette pedal assembly and 2.88 1st gear corvette T10 would be a solution that wouldn't break the bank.
I put a Richmond 6 speed (3.28 1st, 0.76 6th) with the 3.08 rear in my 6.0 LS 68 corvette swap. Almost perfect gears.
Last edited by garys 68; 07-13-2019 at 03:12 AM.