[SamSnyder]

I took some posts here to heart and got the TransGo TH350 1-2 reprogramming kit instead of the B&M shift improver kit I've used before. My past B&M experience plus a set of leftover B&M instructions has mostly helped me decipher the otherwise worthless TransGo instructions (along with their equally useful online video), but I'm left with a question: I understand that the TransGo kit will give a progressive firmness factor but I'm wondering about the advisability of also drilling out the separator plate holes (2nd feed to .125" and the 3rd feed from .125-.140"), such as recommended by this guy Jake here: http://www.nastyz28.com/forum/showthread.php?t=53671 Particularly whether it's advisable on top using of TransGo's "competition" setting. This guy seems to suggest drilling on top of reworking the springs. Engine is a medium-grade 355 with a stock converter. TH350 currently has that annoying GM pillow-soft almost-nonexistent shift feel and I've had the B&M kit come out shifting still-too-soft when using their "HD" instructions. I was just gonna use B&M's "street/strip" setting this time around but read all the opinions about how it's a trans killer, so I bought the TransGo kit instead. I'm looking for solid shifts across the board without barking the tires every time I just go to the grocery store.

 

[jrs396]

Jake is also a member here on TC, he is a wealth of information and will
not steer you wrong. He has helped me out a few times in the past including
supplying me with a full rebuild fit for turbo 400.

All his help and info has been spot on.
You can do a search right here on TC,it's a good possibility he has already
covered your issue.

 

[Guest]

Just use your B&M plate on the TH350. The problem with the B&M kit is the feed hole sizes they recommend.
Use the feed hole sizes I recommend and you'll be OK.

On a TH400 the TransGo kit has a much better design for a DIYer setup.

 

[SamSnyder]

Jake, I don't currently have a B&M plate - those cars are long gone. I bought the TransGo this time around instead. So the question is do I want to drill the stock plate in addition to installing the TransGo kit? Thanks.