460 transplant questions

[Metal Leg]

Alright, been watching threads on here for awhile so before you start flaming away on me, i just want to tell you that I am using the search feature and google so

First things first. I have a 1995 F250 4x4 with a 351 and zf 5 speed. It is an OBD I vehicle. I found a complete 460 with computer, harness, throttle body, you name it, it's on it motor for $500. It came out of a 1997 F250 with 86,000 miles. I realize that my tranny will not bolt up to the big block. I also realize that the 460 is an OBD II computer. I know that I will need big block engine mounts and a different radiator. My questions are:

1.) Will the OBD II computer work with the rest of the trucks OBD I harness?

2.) Instead of finding a ZF 5 speed that will bolt up to the big block, will a C6 auto tranny work with the computer since it's not electronically shifted like the E40D?

I might have some more questions to come. Meanwhile, back to Google.

[br0nc0xrapt0r]

Originally Posted by Metal Leg

Alright, been watching threads on here for awhile so before you start flaming away on me, i just want to tell you that I am using the search feature and google so

First things first. I have a 1995 F250 4x4 with a 351 and zf 5 speed. It is an OBD I vehicle. I found a complete 460 with computer, harness, throttle body, you name it, it's on it motor for $500. It came out of a 1997 F250 with 86,000 miles. I realize that my tranny will not bolt up to the big block. I also realize that the 460 is an OBD II computer. I know that I will need big block engine mounts and a different radiator. My questions are:

1.) Will the OBD II computer work with the rest of the trucks OBD I harness?

2.) Instead of finding a ZF 5 speed that will bolt up to the big block, will a C6 auto tranny work with the computer since it's not electronically shifted like the E40D?

I might have some more questions to come. Meanwhile, back to Google.

I cannot answer about the computer but it would have to be a C6 with the "big" bell-housing like from a 78 bronco with a 400 or 351M, but you probably already knew that since you knew your ZF wouldn't work. Were are you located?

[skipped_Link]

My buggy runs a c6 with a harness from a zf 5 truck, so yes that parts will work, I not sure about the OBD II ecm working with the OBD I harness,

Keep us posted on how the swap goes.

[Metal Leg]

Originally Posted by br0nc0xrapt0r

Were are you located?

Illinois

[Metal Leg]

Originally Posted by skipped_Link

My buggy runs a c6 with a harness from a zf 5 truck, so yes that parts will work, I not sure about the OBD II ecm working with the OBD I harness,

Keep us posted on how the swap goes.

Thanks for the info. I'd rather run a c6 than the zf 5 speed if I can although I'd have to get a tranny cooler, a kickdown cable, and who knows what else. Gotta get this figured out quick cuz the motor is open to anybody.

[1sicbronconut]

You need to find a OBD 1 PCM the OBD2 trucks were mass air flow and have a extra down stream O2 sensor so I don't think the two will mix.

[82F100SWB]

Unless that 97 460 is Cali emissions equipped, it's OBD-1, only the Cali emissions trucks got OBD-II and MAF. The C6 will work just fine.

[hart7290]

to swap in the obd2 stuff will be more work then what it's worth. look into converting your harness you have now to work with a mustang mass air computer (a9l?) and use a chip or whatever to get it tuned for the 460. that way you'll have tons of after market support and the mustang comp wont care what trans is behind it.

[Metal Leg]

Alright so it seems that it will be more work than it's worth to get the 97 OBD II 460 to work with my 95 OBD I truck...SOOO...I'm not going to get the stand alone motor. Instead, I've found an older, complete F250 with a 460 and C6. It has spent it's life as a plow truck so the body is shot but I plan on cleaning up the plow and reselling it since the pump and cylinders are all good. I'll have everything I need from the donor truck to complete my 460 transplant.

[82F100SWB]

Did you actually verify that the 97 was indeed OBD-II? Every one I have ever worked on has not been Cali spec, and has been OBD-I Speed Density.
Sweet on finding a complete donor though.

[Metal Leg]

Originally Posted by 82F100SWB

Did you actually verify that the 97 was indeed OBD-II? Every one I have ever worked on has not been Cali spec, and has been OBD-I Speed Density.
Sweet on finding a complete donor though.

I did not verify it in person but I did ask the guy about it and he told me that it was an OBD II computer. He might not know what he's talking about but after finding a donor truck, I'm not going to pursue the stand alone motor. It would cost me too much for everything else I need. I think if I sell the plow, scrap the body, and part out the rest, I'll make my money back.

[Whitetrash303]

If it's out of a F-250 it should be obd2, since it was mandated in 96.
If it were out of an F-350 it could still be obd1.
1 tons were exempt from obd2 for a while due to their weight class. However you will usually still find an obd2 connector in a 1 ton but it will still only work as EEC-IV (obd1).

[Metal Leg]

The search goes on. Donor truck wasn't such a good donor after all. Gonna save up some more money and search for a F350 donor so I can get a Dana 60 front, 460 and auto tranny all together. Found one but the guy knew what he had and wouldn't let go of it cheap enough for me. If worse comes to worse, I'll just freshen up the 351 that's in my truck. Thanks for all the advice guys!

[82F100SWB]

I have never seen an EFI 460 that was OBD-II in anything, I have read of and seen pictures of the cali spec MAF/OBD 2 trucks. Same goes for a W in a 250 over 8500/F250
The F250's are over 8500# GVWR, same as the F350's, so they were exempt also. My buddy's "97"(1/98 build date) F350 has no OBD-II connector, only the standard old under hood plug from the EEC-IV system.