Need to know, 2.5 to a 2.8,

i need to know, if a s10 that had a 2.5 will bolt right up to my 2.8 i will have to change the trany and i am wondering if the rest of the drive train will hook up or do i have to replace it. any advice, what not. Thanks,
neuf62

Welcome to Automotive Forums :cheers:

You'll have to use your 2.8L transmission as well, and possibly use your drive shaft as well.

Are you dealing with carburators (85 or older) or fuel injected?
A carburated to carburated swap shouldn't bee that hard, where fuel injection might be a hastle that you might want to re-consider.

Someone else on this forum did a carburated swap not that long ago, and I might be able to look his name up. But I can't promise that I can find his posting

both are and were efi, but i plan to take the ecm and everything else i am more concerned with the drive shaft length and the bolt pattern on my frame to fit the 2.8 motor mounts. i do plan on switching the engine trany and drive shaft. what was your concern with the EFI, oh, both are 87's just the s10 had a iron duke and the blazer has a 2.8 v6. again thanks. neuf62

Shouldn't be all that bad since you plan on changing the electronics needed as well.

I'll try looking up the other guy's name that made the swap later, although his was carburated. It sounded like he had worked most of the bugs out of his truck.

shdwtech is the 1 that did the swap
You can send him a PM (private message) by clicking on this link
http://www.automotiveforums.com/vbulletin/private.php?do=newpm&u=406735
he's still pretty new as well and might not know how to work with PM's

Here's his thread http://www.automotiveforums.com/vbulletin/showthread.php?t=570855&highlight=swap

Unless the 2.5L has a problem do yourself a favor and don't switch. The Iron Duke is a MUCH better motor. Better performance and better mileage.

ok i am convinced everything should fit now what about the trannys, i need to fill a spot where a manual was with an automatic. just a little help would be great, like the linkage for the auto?????????????????????????????????? just some help would be great. thanks
Neuf62

Just a brainwave, try looking for a Comaro or someting with a floor mounted auto shifter. I believe that they use cables for their setup, so you can probably use the existing hole.

Let me know what other ways that I can help you, just a warning I might not be around the computer much to answer e-mails much for a while

that is a great idea, off to the wreckers i go, i will be starting the switch in about a week i have to pick up the blazer from the in-laws. i will update you on how things are going.
neuf62

Well for anyone who cares, the swap was easy i did swap the ECM and harness as well but the only things that were problematic was the drive shaft which i just got one from the wreckers and the tranny crossmember didn't line up so i just moved it a bolt hole and tada. the exhaust is close so i will just cut it down and stick it out the side. the shifter issue i just replaced the collum it had tilt on it too so it was a no brainer. well any questions just ask.
thanks for the info.

Neuf

good to see, got any pic's?

i will right a way here.
neuf

http://www.geocities.com/neufpj/index.html?1154024726593
http://www.geocities.com/neufpj/the_begining.html?1154024969281 (with Friend Paul helping out)
http://www.geocities.com/neufpj/index3.html?1154025045140 (and into the truck sorry i was to busy to snap a lot of photos, we had to get out the shop by sunday night.)