Question about shifter location when using setback plates and RS600
I plan on using a Keisler RS600 with an LS3 in my 76 Camaro. I would like to use 1" setback plates.
My question is how will using 1" setback plates affect the shifter location compared to if I installed an RS600 on a Gen 1 SBC? (I suppose it could be ANY manual tranny)
Based on other threads I read here, the LS motor is slightly shorter than the Gen 1 SBC, so using the 1" setback plates would put the LS block about the same distance from the firewall as the Gen 1 SBC without. If that is the case, then the shifter location would be unaffected.
Keisler will place the shifter basically wherever I tell them, so I am determining if I can tell them to use the "factory" shifter location as if I was using a Gen 1 SBC. Thanks in advance!
I've got a motor with Speedhound 1" setbacks on it hanging in my garage if you want a trans mounting surface to mount measurement.
I plan on using a Keisler RS600 with an LS3 in my 76 Camaro. I would like to use 1" setback plates.
My question is how will using 1" setback plates affect the shifter location compared to if I installed an RS600 on a Gen 1 SBC? (I suppose it could be ANY manual tranny)
Based on other threads I read here, the LS motor is slightly shorter than the Gen 1 SBC, so using the 1" setback plates would put the LS block about the same distance from the firewall as the Gen 1 SBC without. If that is the case, then the shifter location would be unaffected.
Keisler will place the shifter basically wherever I tell them, so I am determining if I can tell them to use the "factory" shifter location as if I was using a Gen 1 SBC. Thanks in advance!
Just to help you on the figuring, here is some numbers for reference:
- bellhousing depth, 6.5inch
- shifter position from bellhousing rear face, approx 16.5; shifter hole is offset to the left.
When searching for mounts, ask the mfr where the engine face and crankshaft centerline is in relation to a factory smallblock. If they can't give this information to you quickly, there is a potential problem, and I recommend to check more suppliers.
There are so many companies now making LS mounts, it is hard to know who's works to the original spec. But when you ask them, they should know this.
Just to help you on the figuring, here is some numbers for reference:
- bellhousing depth, 6.5inch
- shifter position from bellhousing rear face, approx 16.5; shifter hole is offset to the left.
When searching for mounts, ask the mfr where the engine face and crankshaft centerline is in relation to a factory smallblock. If they can't give this information to you quickly, there is a potential problem, and I recommend to check more suppliers.
There are so many companies now making LS mounts, it is hard to know who's works to the original spec. But when you ask them, they should know this.
I've got a motor with Speedhound 1" setbacks on it hanging in my garage if you want a trans mounting surface to mount measurement.




