302 to 351w swap - Page 3

waypastcrazy · 12-10-2010, 10:40 AM

Also the 351 ecu on 94 96 is same as the earlier trucks only the 94 96 302 ecm were changed thats why the 351 didnt get mass air in the trucks.someone correct me if i am wrong because i not 100 percent.i am efi ignorant lmbo.

waypastcrazy · 12-10-2010, 11:08 AM

My neighbor put a ho engine in his 89 bronco and it fired right up.2 different firing orders.

waypastcrazy · 12-10-2010, 12:24 PM

They had to change something in 94 for the electric controled trannies.hmm where is Dale he could prob clear this up lol

EHardy1971 · 12-10-2010, 03:15 PM

Quote:

Originally Posted by waypastcrazy

Also the 351 ecu on 94 96 is same as the earlier trucks only the 94 96 302 ecm were changed thats why the 351 didnt get mass air in the trucks.someone correct me if i am wrong because i not 100 percent.i am efi ignorant lmbo.

Not all the '94-'95 302 trucks had mass air, only the automatic ones. Manual trucks were still speed density until '96 (and '97 on the 250/350), where they all went mass air.

Quote:

Originally Posted by waypastcrazy

They had to change something in 94 for the electric controled trannies.hmm where is Dale he could prob clear this up lol

Yep, different ECU on the auto trucks due to all the sensors in the tranny.

waypastcrazy · 12-11-2010, 04:10 AM

So if you use a automatic ecu with a manual tranny what happens?I am in the process of doing this swap on mine with a 351. Joe what is the donor ecu auto or stick?I am getting mixed reviews on how it will affect the truck.Will it even be an issue beings it speed density?
Oops thread hi jack lol.thx

EHardy1971 · 12-11-2010, 07:15 AM

It won't run right unless you do the mass air swap. Not sure about the tranny functions, but I don't think they would be much of an issue, but I'm not 100% on that part.

waypastcrazy · 12-11-2010, 10:03 AM

Quote:

Originally Posted by EHardy1971

It won't run right unless you do the mass air swap. Not sure about the tranny functions, but I don't think they would be much of an issue, but I'm not 100% on that part.

All i am swapping is the tranny auto to stick.my truck is already 351 speed density.

EHardy1971 · 12-11-2010, 10:31 PM

Quote:

Originally Posted by waypastcrazy

All i am swapping is the tranny auto to stick.my truck is already 351 speed density.

I don't think it would be an issue as far as how it runs, but it may throw some codes.

waypastcrazy · 12-12-2010, 12:37 AM

That what i have been told.the overdrive light will flash but i will not have one of those.lol

EHardy1971 · 12-12-2010, 08:15 AM

Quote:

Originally Posted by waypastcrazy

That what i have been told.the overdrive light will flash but i will not have one of those.lol

Pull the OD light bulb out. Problem solved.

12-10-2010, 10:40 AM	#21
waypastcrazy ADDICTED TO SMALL BLOCKS Join Date: Jan 2007 Location: lookout mt Posts: 1,757	Also the 351 ecu on 94 96 is same as the earlier trucks only the 94 96 302 ecm were changed thats why the 351 didnt get mass air in the trucks.someone correct me if i am wrong because i not 100 percent.i am efi ignorant lmbo. __________________ http://alabamaopencarry.com/forum/index.php One of StreetStangs class clowns! Status:slow as hell! NORTH EAST ALABAMA STANGS

12-10-2010, 11:08 AM	#22
waypastcrazy ADDICTED TO SMALL BLOCKS Join Date: Jan 2007 Location: lookout mt Posts: 1,757	My neighbor put a ho engine in his 89 bronco and it fired right up.2 different firing orders. __________________ http://alabamaopencarry.com/forum/index.php One of StreetStangs class clowns! Status:slow as hell! NORTH EAST ALABAMA STANGS

12-10-2010, 12:24 PM	#23
waypastcrazy ADDICTED TO SMALL BLOCKS Join Date: Jan 2007 Location: lookout mt Posts: 1,757	They had to change something in 94 for the electric controled trannies.hmm where is Dale he could prob clear this up lol __________________ http://alabamaopencarry.com/forum/index.php One of StreetStangs class clowns! Status:slow as hell! NORTH EAST ALABAMA STANGS

12-11-2010, 04:10 AM	#25
waypastcrazy ADDICTED TO SMALL BLOCKS Join Date: Jan 2007 Location: lookout mt Posts: 1,757	So if you use a automatic ecu with a manual tranny what happens?I am in the process of doing this swap on mine with a 351. Joe what is the donor ecu auto or stick?I am getting mixed reviews on how it will affect the truck.Will it even be an issue beings it speed density? Oops thread hi jack lol.thx __________________ http://alabamaopencarry.com/forum/index.php One of StreetStangs class clowns! Status:slow as hell! NORTH EAST ALABAMA STANGS Last edited by waypastcrazy; 12-11-2010 at 04:58 AM.

12-11-2010, 07:15 AM	#26
EHardy1971 Trunk Monkey Join Date: Jun 2007 Location: Home Posts: 5,708	It won't run right unless you do the mass air swap. Not sure about the tranny functions, but I don't think they would be much of an issue, but I'm not 100% on that part. __________________ Eric 89 LX Coupe-Juiced 01 Lightning-Boost 06 TBSS

12-12-2010, 12:37 AM	#29
waypastcrazy ADDICTED TO SMALL BLOCKS Join Date: Jan 2007 Location: lookout mt Posts: 1,757	That what i have been told.the overdrive light will flash but i will not have one of those.lol __________________ http://alabamaopencarry.com/forum/index.php One of StreetStangs class clowns! Status:slow as hell! NORTH EAST ALABAMA STANGS Last edited by waypastcrazy; 12-12-2010 at 12:39 AM.