Yenko turbo 400 speedo adaptor - Page 2

**Kurt S** · #11 03-05-2003, 03:05 AM

No, not all Muncies hooked to a 4.10 got the adaptor. Depended on which Muncie model it was, there were two different size speedo drive gears.

**copo69** · #12 03-05-2003, 12:53 PM

Should the 9737 Camaro with 4 speed have the adapter? 9737 with auto?

Ed Cunneen · #13 03-07-2003, 03:38 PM

Yes

Unreal · #14 03-08-2003, 12:06 PM

Is this the little 90 degree adapter that shows on the AIM? I have one, but was not sure if I should be using it.

**Mr70** · #15 03-08-2003, 01:38 PM

That sounds like it.

Unreal · #16 03-08-2003, 07:23 PM

So with 235 70 15 tires and a 3.73 rear, will I need it?

**Mr70** · #17 03-09-2003, 02:19 AM

With a manual transmission, No.

**Kurt S** · #18 03-09-2003, 05:21 AM

[ QUOTE ]
Should the 9737 Camaro with 4 speed have the adapter?

[/ QUOTE ]
Maybe. Some 4.10 rears got them, some didn't. Depended on plant inventory. I have documentation on several Z's with 4.10's and no adapter. Tire size shouldn't be a factor, but Z's had 15x7's anyway.

JBB · #19 03-09-2003, 05:55 AM

This part:
Stewart Warner
GGGF X1 (or 666F X1)
1.300 J
Is specific to a solid lifter L-78,L-89,4.10 or higher w/TH400.
It is manditory for a COPO L-72 or ZL-1 w/TH400 in leiu of the fact a 4.10 was standard rear,with higher gears optional. I am not sure of the M-22 or M-21 4 speed application............

Ed Cunneen · #20 03-09-2003, 02:20 PM

I have a speedo reducer chart on my web site rl=http://www.copo.com/speedo-reducer.htm

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