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Some questions about th350 conversion

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Old Nov 10, 2010 | 12:21 PM
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Default Some questions about th350 conversion

I have a th350 that I have in the shop that I will be installing in a 94 z28. I also will be installing an ls1 k-member in this vehicle and picking up a bmr crossmember. A couple of questions about the torque converter and driveshaft and speedo...

Who makes a torque converter that will work with a 5.3 or 6.0 truck motor, will the stock lt1 driveshaft work, and how would I get the speedo functioning correctly with an aftermarket setup?(No interior in this car, autometer gauge swap)

This is going to be my first real non-bolt on build...so I have no clue what Im really doing.
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Old Nov 10, 2010 | 01:11 PM
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Any sponsor can make a torque converter for this.

If it's a long tail th350 the stock driveshaft will work.

There are a lot of vss options, if the engine is going to be computer controlled it will need a vss input regardless of speedo used.
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Old Nov 10, 2010 | 02:58 PM
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Originally Posted by Jays_SSZ28
Any sponsor can make a torque converter for this.

If it's a long tail th350 the stock driveshaft will work.

There are a lot of vss options, if the engine is going to be computer controlled it will need a vss input regardless of speedo used.
why do you say that? i have an lq9 w/a th350 bolted to it, my pcm has no vss signal and everything works just fine.
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Old Nov 10, 2010 | 03:11 PM
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Originally Posted by dville_gt
why do you say that? i have an lq9 w/a th350 bolted to it, my pcm has no vss signal and everything works just fine.
The PCM references the VSS signal, even with a manual trans. Sure you can get away without it, but someone wants information, the pcm does reference vss, I relayed that information.
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Old Nov 10, 2010 | 08:22 PM
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The PCM mostly needs the VSS signal for throttle cracker (coming back down to idle while slowing down).
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