turbo and NA 4eat direct swap?

Damon · Post by **Damon** » Wed Feb 07, 2007 7:17 pm

Are the turbo and NA auto trannies a direct swap?

206er · Post by **206er** » Wed Feb 07, 2007 9:41 pm

voodoochylde · Post by **voodoochylde** » Thu Feb 08, 2007 12:30 am

No - OK, why not?

head2wind · Post by **head2wind** » Thu Feb 08, 2007 1:59 am

different final ratios, the N/A is typically 4.11, the turbos are 3.9 therefore the rear differencial will not be correct.. so you would need to put the NA diff in also... along with that the clutches are different also

head2wind · Post by **head2wind** » Thu Feb 08, 2007 2:02 am

doah! i said clutch... at least I didn't edit out....

voodoochylde · Post by **voodoochylde** » Thu Feb 08, 2007 3:34 am

I think the reason he's asking (since hopefully I'm getting his '94 SS 4eat and rear diff from him) is with the rear diff and 4eat, what else is required to swap an 94 SS 4eat into a 1990 4eat NA legacy...

Damon · Post by **Damon** » Thu Feb 08, 2007 5:58 am

voodoochylde wrote:I think the reason he's asking (since hopefully I'm getting his '94 SS 4eat and rear diff from him) is with the rear diff and 4eat, what else is required to swap an 94 SS 4eat into a 1990 4eat NA legacy...

What he said.

head2wind · Post by **head2wind** » Thu Feb 08, 2007 6:05 pm

If I recall properly the TCU is different but they are interchangeable. Aside from that they should be a direct interchange provided you change the rear diff also.

Bheinen74 · Post by **Bheinen74** » Thu Feb 08, 2007 7:17 pm

torque converters are different.
the flexplate which is bolted to the crank is different between turbo and N/A.

head2wind · Post by **head2wind** » Thu Feb 08, 2007 10:14 pm

yes, those also... sorry, forgot that about the torque converter/flex plate.

legacycentral bbs

A forum for 89-94 BC-BF(BJ) Legacy Owners and Fans

turbo and NA 4eat direct swap?

turbo and NA 4eat direct swap?