Yenko turbo 400 speedo adaptor

fpcopo · #1 02-25-2003, 02:54 AM

Hi,
Does anyone know the ratio or the part # for the speedo reduction box on a T400 Yenko Camaro with 410 gears and the E7015 tires? Also any idea on the color or teeth of the speedo gear? Thanks

**Mr70** · #2 02-25-2003, 05:23 PM

Although you want TH400,the book says for TH350 use #6476736 with 4:10 E70X15 tires.I know one who used this with good results.
Gear color is Orange #3860348 with 25 teeth.

JBB · #3 02-27-2003, 07:00 PM

That is the Stewart Warner speedo reducer for 4.10 ratio rear and higher. Send me a e-mail and I will send you a picture of the proper part..............Joel [img]/ubbthreads/images/graemlins/naughty.gif[/img]

**copo69** · #4 02-28-2003, 12:39 AM

I'm confused. I thought the'69 Copo 15" E70 cars didn't use an adapter, only the 14" tired cars. Was this only manual shift cars or autos too? Did auto cars use the square adapter or the cylindrical shaped adapter used on the manual trans cars? I know Brian made the statement he had never seen one used on a Yenko.

JBB · #5 02-28-2003, 06:20 AM

Hi everyone. The tire size is not the issue, it is the size of the speedo gear 4.10 or higher that couldn't fit inside the transmission casing, so that is the only purpose of the transducer.............

JBB · #6 02-28-2003, 06:22 AM

Just to reiterate, we are talking about a CX TH400, specifically behind any solid lifter big block in 69

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