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Ls1 + T56 in 63 mounting questions

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Old 05-21-2015, 01:43 PM
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yzguyfl
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Default Ls1 + T56 in 63 mounting questions

This will be a fairly tame restomod in comparison to others I’ve seen around here, but here is what I’m going for, and what I have to work with.

I have a 1963 SWC that need a lot of help (that will be the topic of many threads in the future )
I figured I’d start with where/how to mount the motor/tranny. I have seen several different motor mount possibilities, but some position the motor in different locations, and rather than order several and try them, I thought I’d ask which ones had people used, if they were doing it over, which ones would they use and why. (I have not yet found this detail in a C2 LSX stock frame thread)

Also related questions, like: do I need to make the transmission cross member removable, to remove the transmission without pulling the motor? (Thinking yes)
Do I need to alter the transmission tunnel for the t56? (also thinking yes, I see someone raised it about ½”)
clearance/position issues with different mounts, like firewall, front accessories, shifter placement/relocation.

I have a complete running driving 98 z28 donor car and can/will take anything of use from it.
I will be using the stock frame (don’t have the $’s for an aftermarket one)

This seems to be the most common adapter mount, reuses one of the holes for both the LS mount, and the SBC mount (6 holes)
http://www.summitracing.com/parts/trd-4572
and a slightly off set version (7 holes):
http://www.summitracing.com/parts/trd-4595

and a totally different mount, that is not an adapter to a SBC mount (anyone use these?):
http://www.brphotrods.com/products/6...tte/index.html
and these seem to be the EXACT same thing, at the same price:
http://southernperformancesystems.co...-corvette.html

and $479 seems a bit much for a set of motor mounts, and a transmission mount and adapter plate, when other motor mounts are under $100



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