ok i have a 93 e250 with a trans coce of m and a rear end code of 24 can someone tell me what they are? also doing a swap from 351 to a 302. can i elimanate all the air pump and smog stuff but still keep the egr? im new and trying to get my van going.351 is blown and im taking 302 from my tbird wich is an 88.

 

Trans code M is a Mazda manual 5 dpeed overdrive. Axle code 24 iis'nt listed in my book, maybe someone else knows. I know the oil pans aren't the same on car and truck engines either.

 

Hey wrh what does code 19 mean for axle?

 

19 is a 3.55 open 3800# axle.

 

hmm door sticker says m for trans but it sure aint no 5 speed . looks like an a4od to me. got one funky looking pan on it. its got overdrive on the end of the shifter.

 

24 is a 5400-lb axle with 3.73 gears.

M should not be used on a '93 Econoline. According to my CD, options are:
G - C-6
T - AOD
E - E4OD
U - 4R70W (AODE-W)

 

so the front axle is also 3.55?? What does it mean open 3800# axle?

 

"Open" means an open differential. Read this.

3800 lbs is the Gross Axle Weight Rating (GAWR) for 1/2-ton truck axles. Alone, it means the axle is either the 9" or the 8.8". But considering that the 9" wasn't made after '86, we know it has to be the 8.8".

 

Ah I see... How hard is it to change to a posi for the front and rear?

 

Setting up a differential

It's not something an amateur should attempt. Only after watching a pro several times should you attempt to do it, and then ONLY using all the proper tools and specificiations.

The typical cost to have a diff set up professionally is $250-500, and considering the risk if you do it wrong, it's worth it.

 

thanks