???RPM'S???

Reply Subscribe

Thread Tools

Search this Thread

Jul 31, 2011 | 04:19 AM

smithf250

Thread Starter

Freshman User

Joined: May 2011

Posts: 36

Likes: 1

???RPM'S???

Ok i was wondering what my rpm's should be at 70mph its a 1992 f250 2wd e4od 7.3idi just added a stock turbo off a 1993 f350 and im running 3.55 gears if anyone knows please let me know cause sometimes it runs at 1900rpm and other times it runs at 2200rpm's
Also would it better to go with a 5 speed or leave the e40d in it?

Jul 31, 2011 | 04:42 AM

ford390gashog

Fleet Owner

Joined: Jan 2004

Posts: 26,007

Likes: 575

From: Brentwood,CA

2200 sounds about right!! the 300 rpm difference could be an issue with the torque converter lockup.

Jul 31, 2011 | 02:49 PM

hairyboxnoogle

Lead Driver

Joined: Apr 2008

Posts: 6,945

Likes: 13

Quote:

Originally Posted by ford390gashog

2200 sounds about right!! the 300 rpm difference could be an issue with the torque converter lockup.

Sounds about right to me, not sure what the OD % is on the auto, i have the ZF-5 with 3.55s and 35s in 4th im around 2500 at 65 and in 5th im at 1900.