I may have been mislead about the 4.3L. Bob Wilson sent me some info that
indicates I *don't* want the 4.3L tranny. Back tracking my research, it looks
like that bit of "guidance" came from one of the junk yards I called.
The bit about the input shaft splines came from MG V8 Newsletter (Ussie IV Vol
1). It says, "The V8 trans has 26 splines on the input shaft and 27 on the
output shaft." Looking at this again, it doesn't say that the V6 tranny has
anything different. I just assumed it did since they pointed it out in the
article.
You're right, of course. The clutch disk is the only thing that mates onto the
input shaft.
I like of less pedal effort. I guess you have found that the S-10 clutch
doesn't go up in smoke with the BOP215 because the tires break loose before the
clutch slips?
After reading your email, the question I have is: Can I use *any* T-5 out of an
S-10 even if it was originally bolted to the 4-banger? Will that transmission
still mate to the Buick 4-speed bell housing and still have the gear ratios you
mention (2.95, 1.94,...)?
Thanks for the great help as usual,
Bill
Jim Stuart wrote:
> Kris & Bill-
>
> I am curious about the application- 4.2 L V-6. This will probably have
> different gearing than the V-8 version, not in your best interest with the
> power to weight ratio you should expect. Also, why are you concerned about
> the number of splines? As far as I know, both the V-8 & V-6 version are 26
> splines on the input shaft. As long as you have the correct clutch, what
> does it matter? I use the S-10 clutch with the V-8 version of the T-5 in my
> GT. This is because I wanted a smaller clutch with less pedal effort.
>
> I cannot find a specific reference to the 4.2L trans, but the V-6 usually
> has 1st- 4.03, 2nd 2.37, 3rd 1.50 while the V-8 version is 2.95, 1.94,
> 1.34. Depending upon the rear end ratio, you will have little use for 1st
> gear.
>
> I have seen several V-6 trannies sell in the $450-550.00 range, with the V-8
> version considerably higher, $700.00 used, $800.00 + rebuilt.
>
> Hope this is some help to you. This info East Coast biased, DC area.
>
> Jim Stuart
>
> Kris & Bill Wessale wrote:
>
> > Greetings from unseasonably warm Houston:
> >
> > I am stuffing a BOP215 into a MKIII Spitfire and I am finally to the
> > point of purchasing the tranny. (As if I need more parts!)
> >
> > Research I've done from the MGV8 Newsletter as well as guidance from
> > list members tells me that I should use a post-1988 T-5 (to get the
> > World Class T-5 -- a presumptuous name) from a 4.3L V6 (to get the right
> > number of splines on the input shaft) Chevy S-10. I have the bell
> > housing that the Chevy T-5 will bolt right onto, and I need the short
> > tailpiece on the S-10 to keep the shifter from being positioned between
> > the seat backs.
> >
> > So I called 12 appropriate junk yards (auto jumbles) in Houston today
> > and found *one* S-10 T-5 post-1988 for the 4.3L V6. And they wanted
> > $550 USD for it -- delivered. Does that seem right? It was double what
> > I expected, but that's a common phenomena.
> >
> > Also, am I being too selective? As far as I know, only the S-10 the
> > tranny for the 4.3L V6 will work (has the right number of input shaft
> > splines).
> >
> > Is this tranny in something other than just the S-10? How about some
> > GMC thing, or maybe the little Blazer?
> >
> > Finally, if someone knows where I can buy one for $250, I could probably
> > get it shipped here for $250.
> >
> > Thanks.
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