Opinions Needed

[Krayzie949]

I am going to replace my original transmission with something else. I'm not sure what to replace it with. I was going to replace it with a Muncie, but I had a reputable transmission shop tell me that I would probably be better off buying a Super T-10 or a T-10 (I'm pretty sure they told me the Super T-10). My question to you is, what should I do? I don't mind buying a Super T-10 as long as I can get the same gear ratio's that are currently in my GS now. If I can't get the same gear ratio's, how does that affect my speedometer? Is the T-10 (Super) just as durable as the Muncie? Basically what are the pro's and con's of each and what is you opinion of what I should do. I am building a stout BBB so I do want it to hold up. Some of the basics are Stage 1 Aluminum heads (fully ported), 10.7:1 compression, either an SP1 or SP2 intake. My goal is to have about a low 11 high 10 second motor. In the long run I will buy a GS or Skylark to put this drivetrain into, but for now it's going into my GS until I can save up money to do a frame-off restoration and put it back to original, but that will be quite a while down the road. Alright enough of my ranting... Any opinions?

Brian

[DualQuad55]

My understanding is that a properly assembled super T10 is nearly as strong as a HD Muncie.
As far as 'ratios', all conventional four speeds (non overdrive etc...) should have a final gear (4th) of 1:1. This means your speedometer should will give as accurate a reading as it does now. However, if the lower gears )1, 2, 3)are different, you will notice that car may go a little faster or slower in each gear(this is correct/accurate speed), but once in 4th, all should be the same.

[bob k. mando]

isn't the speedo driven from the output shaft?

if so, it makes absolutely no difference what the trans is geared at. it's what size your speedo gear is in relation to your diff and tire circumference.

[Krayzie949]

Thanks for the info guys, I appreciate it. If I cannot get the gears that I want for the transmission, what should I get in the buick. I know I can pick from a few different ones. Any suggestion?