LTX and LSXPutting LT1's, LS1's, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects, including repairs, swap info, and performance upgrades.
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hey, Im doing an lt1 swap and am gona keep the T5, its a 1992 rs and has the WC transmission with low miles and no grinds. I got the swap for an insane deal.
My question is, can I use my flywheel from the existing 305?
as long as the flywheel is from a one piece rear main you should be able to use it. Not sure how it would affect the balance of the engine though.
__________________ 1991 Z28 Engine: '94 355 LT1, GM hot cam, 1.6 RR's, Ported Heads, Dyno Don's headers, #30 SVO injectors, stock internals with skirted pistons. Drivetrain: '95 T56, pro 5.0 shifter, hayes clutch, Stock 10 bolt with 3.42's Suspension: LS1 front brakes, Spohn SFC's, hot part LCA's. 265/40/18's up front and 275/40/18's out back on 18x9.5 c6's 335RWHP 339.8RWTQ
hey, Im doing an lt1 swap and am gona keep the T5, its a 1992 rs and has the WC transmission with low miles and no grinds. I got the swap for an insane deal.
Watch it go boom in the process, I knew a guy who had a 3550 in his '95 Z28 behind an LT1 and he ended up having it rebuilt 3 times from blowing out the 2-3 cluster.
The one that's in there wasn't designed for the torque that the LT1 puts out, it was made for a TBI car which wasn't very torquey to begin with. Many of them were destroyed behind the stock 305s.
Agreed. I was going to stick with my T5 in an effort to save some money and switch to a t56 later down the road. I would of been too much of a hassel to later switch so i just forked over the extra money to use the t56. Better to have spent the extra dough and have a reliable transmission than watch your t5 explode and park your car.
__________________ 1991 Z28 Engine: '94 355 LT1, GM hot cam, 1.6 RR's, Ported Heads, Dyno Don's headers, #30 SVO injectors, stock internals with skirted pistons. Drivetrain: '95 T56, pro 5.0 shifter, hayes clutch, Stock 10 bolt with 3.42's Suspension: LS1 front brakes, Spohn SFC's, hot part LCA's. 265/40/18's up front and 275/40/18's out back on 18x9.5 c6's 335RWHP 339.8RWTQ
what you'll need to change is the tailshaft housing of the trans for one from a 4th gen t5 car. That way you will have the correct VSS signal to make the PCM happy.....
It is a weak trans, so if you baby it for a year or so, it'll survive
I am using my T-5 behind my LT-1 With no problems so far. I wouldn't say that I "beat " on it but I don't treat it very nicely either. It has held up to some drag strip duty as well, and driven home. I used the stock flywheel and upgraded to a centerforce clutch.
__________________ Hotcam, 1.6 RR, SLP Headers, 3 inch exhaust, no cats, LT4 KM
What is the difference between the signals of the vss on a 92 t5 then a 93 t5. Is there any way I can wire in a resistor or something to get the right signal?
T5 sends 4,000 pulse per mile
T56 sends 17 pulse per revolution
Im not sure what the later V6 T5 sends but it should be close to the T56
I think the tuner can fudge the conversion ratio close enough with the 3rd gen VSS, but to be correct the 4th gen T5 VSS/tail needs to be used as the VSS uses a magnetic sensor and the 3rd gen uses a gear drive
Also the pcm for the lt1 came automatic, I dont know if that makes a difference. So can I pick up the back piece of the transmission and grap the vss and mount it on the back of my t5?
I was told the transmission it had on it was a 700r4, Im not too sure though. I havnt really looked into any tuners yet who would you suggest? I want the vats removed and it would be nice if I could use the stock vss.
So for those of you who are using a T5 with an lt1, what did you do with the vss deal?
To make it work properly you need to find a V6 T5 4th gen in the junkyard, I believe the one I pulled the parts from was a 3800 car, then you need the reluctor ring, speed sensor, and I believe iirc also the tailshaft housing, then install them into your trans.
So for those of you who are using a T5 with an lt1, what did you do with the vss deal?
When I got my PCM programmed I told them that I wanted the VSS deleted and whatever they did it works fine. I do have a mechanical cable driven speedometer though so that makes it a little easier I suppose. But bottom line is that it runs and idles fine and has no check engine lights or stored codes.
I talked too a tuner and he said he could make it it possable for the ECM to read the 3rd gen T5 VSS. So that makes it alot easier. With out a VSS the ECM most likely wont ever go into closed loop, and purge the evap sol. and stuff like that and im trying to keep the car as legal as possable. Im in CA.. everything is a pain here as far as aftermarket.
Just curious, but do you have a picture of this sensor and sprocket?
Sorry, long since lost. I had that setup over 5 years ago and changed to a T-56 shortly after. You might be able to find some photos if you search by my name as I think I posted a couple, but I really don't remember.
