518 swap

[oley340]

Does anybody know if i swap in a 518 to my 416 ci duster will it loose around a second in the quarter .I have a 727 in now that went 11.42 i'm looking for better use on the highway but i don't want to give up a second. any advise. thanks

 

[Woods74]

Some folks perpetuate inflated garbage E.T. loss estimates with these transmissions.

Because of the way they are efficiently designed, Your not going to loose much.

Maybe 1-3 tenths.

Torque converter selection plays a BIG role as well, like it does any other transmission.

 

[Woods74]

 

[oley340]

Some folks perpetuate inflated garbage E.T. loss estimates with these transmissions.

Because of the way they are efficiently designed, Your not going to loose much.

Maybe 1-3 tenths.

Torque converter selection plays a BIG role as well, like it does any other transmission.

Thank you very much thought i might have to hook up the nitrous

 

[Woods74]

Thank you very much thought i might have to hook up the nitrous

Hell no, I have the a-500 in my car and I can't tell any difference between it and the 904 I had previously, they share the same OD unit as the 518.. It's very 'free' feeling. These transmissions would have to be a complete hog to bog down a fast car a full second. The rotating mass for the OD in them isn't that heavy. I know, because I build mine personally!

Enjoy 4th gear!

 

[oley340]

Hell no, I have the a-500 in my car and I can't tell any difference between it and the 904 I had previously, they share the same OD unit as the 518.. It's very 'free' feeling. These transmissions would have to be a complete hog to bog down a fast car a full second. The rotating mass for the OD in them isn't that heavy. I know, because I build mine personally!

Enjoy 4th gear!

thank you very much for the input

 

[AJ/FormS]

You didn't say what power level you are at, but if you are NA, and If you are currently running the 2.45/1.45/1.00 ratios, a swap to the A-500 which IIRC can be had with the 2.74/1.54/1.00 gearset, then I bet you go faster! I seem to remember just a swap from 727 to 904 is worth a tenth or two. The gear ratio swap might subtract a tad more.The extra pounds of the O/D, hardly counts.
Enjoy the new freedom,don't look back.