Piston Slap: 4.9L Pride at What Cost?

by Sajeev Mehta

Updated: May 16th, 2014 Published: December 2nd, 2011

TTAC Commentator Cameron Evans writes:

Dear Sajeev,

I am the proud owner of a 1992 F-150, 4×2, regular cab, long box, with power nothing and the Big Six. I love everything about the truck, except for the one concession to my wife, the E4OD gearbox.

Now that the tranny is shot (slip city, followed by violent shifts), I need your advice. The Ford has a lot of new, high quality parts (Michelin’s, o2 sensor, egr valve, coil, water pump, alternator, exhaust, etc), but it’s also rusty as hell from 19 Minnesota winters and the body is beat up from being a municipal truck.

Simple question, drop the cash on a rebuilt tranny or cut my losses?

Thanks in advance!

Sajeev Answers:

Unless the floors are rusting out, I’d keep it. Even then, sheetmetal stock and talented welders are cheap and easy find almost everywhere. A truck is a truck, my friend. There’s a reason why songs are sung, jobs get done, and America is America: the work truck beat to all hell is a symbol of our national pride.

Ok, let’s try to give a technical reason why. Look at all those new parts! The exhaust is a big plus. Great choice in tires too. And if the EEC-IV controlled, 4.9L Big Six was a reasonably attractive woman, I’d marry her on the spot. You know I’m right, son.

Now to the tranny: finding a Ford savvy rebuilder is sometimes a bit tough. So you’ll have to call around to find one, lest you wind up with an inferior product. But when you do, and when you drop a decent shift enhancer on it, the E4OD is a great unit. Much like the rest of your parts, spending a good $1000-1500 (not including installation) for a proper rebuild by a proper Ford man is totally worth it.

Send your queries to sajeev@thetruthaboutcars.com . Spare no details and ask for a speedy resolution if you’re in a hurry.

#4.9L #BigSix #E4OD #F-150 #Ford #I-6 #Rebuild #Rust #Transmission

Sajeev Mehta

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2 of 27 comments

PrincipalDan on Dec 03, 2011

A truck is a truck, my friend. There’s a reason why songs are sung, jobs get done, and America is America: the work truck beat to all hell is a symbol of our national pride. BTW Sajeev, that line made my fiance clap and say "Hell Yeah." But then her Dad has owned the same 72 Chevy since the mid 70s.

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LeadHead on Dec 04, 2011

If you get the E4OD rebuilt, make sure they put '96 Spec internals at the minimum in it. If you can spare the change for 4R100 (same transmission for the most part) internals - even better. My buddy has a turbo 460 with a 168,000 mile E4OD behind it. Holding up fine. E4OD's are basically C6s with an overdrive and electronic controls. The early ones were plagued by design issues however.

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