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View Full Version : Is a 85 f-350 diesel a 7.3?


mybowtie
06-14-2009, 11:43 AM
Going to look at a 85 1 ton dump later. Is that a 7.3 non turbo?
Don't know much about the older oil burners. Any known problems with that motor? I know the 7.3 turbos were a great motors. Thanks....:usflag:

kps2389
06-14-2009, 12:26 PM
I'm not positive but I think in 85 ford was putting the old 6.9 diesel in those trucks.

razor1
06-14-2009, 12:32 PM
Probably non turbo also.

Landrus2
06-14-2009, 12:45 PM
4.9 L I6 1987-91 145 hp (108 kW) 265 lbft (359 Nm) EFI
5.0 L V8 1987-91 185 hp (138 kW) 270 lbft (370 Nm) EFI
5.8 L V8 1987 210 hp (160 kW) 305 lbft (414 Nm) 4-bbl.
5.8 L V8 1988-91 210 hp (160 kW) 315 lbft (427 Nm) EFI
7.5 L V8 1987 225 hp (168 kW) 362 lbft (491 Nm) 4-bbl.
7.5 L V8 1988-91 230 hp (170 kW) 390 lbft (530 Nm) EFI
6.9 L Diesel V8 1987 170 hp (130 kW) 310 lbft (420 Nm) IDI :hammerhead:
7.3 L Diesel V8 1988-91 180 hp (130 kW) 345 lbft (468 Nm) IDI

Gravel Rat
06-14-2009, 01:22 PM
A 85 truck is a 6.9 the 7.3 didn't start till 88. The 6.9 is okay just not big power. The 6.9s biggest problem is the glow plug system.

TXNSLighting
06-14-2009, 01:23 PM
Yeh 6.9 there. They can be great diesels and are very easy to work on as well. Turbos didnt get put on the Fords til 94.

TXNSLighting
06-14-2009, 01:24 PM
4.9 L I6 1987-91 145 hp (108 kW) 265 lbft (359 Nm) EFI
5.0 L V8 1987-91 185 hp (138 kW) 270 lbft (370 Nm) EFI
5.8 L V8 1987 210 hp (160 kW) 305 lbft (414 Nm) 4-bbl.
5.8 L V8 1988-91 210 hp (160 kW) 315 lbft (427 Nm) EFI
7.5 L V8 1987 225 hp (168 kW) 362 lbft (491 Nm) 4-bbl.
7.5 L V8 1988-91 230 hp (170 kW) 390 lbft (530 Nm) EFI
6.9 L Diesel V8 1987 170 hp (130 kW) 310 lbft (420 Nm) IDI :hammerhead:
7.3 L Diesel V8 1988-91 180 hp (130 kW) 345 lbft (468 Nm) IDI

ok........

mybowtie
06-14-2009, 04:21 PM
Thanks for the info..Going to look at it soon. Might buy just to re-sell.

genesis215
06-14-2009, 07:19 PM
'83-'87 had the 6.9L IDI non-turbo. '88-'94.5 had the 7.3L IDI non-turbo, and also a IDI turbo version '92-'94.5. The 7.3L Powerstroke DI turbo diesel was released in mid '94.

TXNSLighting
06-15-2009, 12:02 AM
'83-'87 had the 6.9L IDI non-turbo. '88-'94.5 had the 7.3L IDI non-turbo, and also a IDI turbo version '92-'94.5. The 7.3L Powerstroke DI turbo diesel was released in mid '94.

Nope 92 and 93's never had Turbos. At least in Texas thats the case.

Gravel Rat
06-15-2009, 01:10 AM
The 93-94 IDI trucks were offered as a turbo or N/A. The factory turbo really didn't do much. The old IDIs had such a high compression that you couldn't stuff much boost into them. Pretty much a hair dryer hooked up to the intake manifold.

The old 6.9 trucks usually had a C-6 or 4spd behind them so they screamed on the highway and sucked wind pulling hills.

As I said the 6.9 had the bad glow plug system you can covert it over to the better 7.3 system with the solid state controller and bullet GPs.

The 6.9s didn't have the cavitation problems the 7.3 had. I had a 7.3 IDI it was okay it had good bottom end power but nothing for road speed.

ZTR_Diesel
06-15-2009, 06:10 PM
Being you are in New York, you should also be aware that with or without working glow plugs, older 6.9 idi's were known for hard starting below 50* and really hard starting below 30*. If you don't have ready access to an electric outlet and check the heater grid, you may find starting in the fall challenging.

I believe there is a gasket & head plate system that may assit this issue, however it's been years since I've heard about it. Someone else may know more.

I would check that truck out really well for rust - the whole underside, fenders, quarters, etc are susceptable for heavy rust. Is it worth it? - You have to decide based of what it's worth, and how much work it's going to take. Old trucks are a gamble - some turn out good, many are not worth the hassle.

mybowtie
06-16-2009, 08:39 PM
Thanks for all the replies....didn't buy the truck. Isn't quite the gem the guy led it to be, it is 24 yrs old after all... Would make a good wood/yard truck though.

As Gravel Rat basicly said, the thing couldn't out run it's own shadow going up hill. Definatly not a rocket ship...lol