my86mj Posted June 24, 2012 Share Posted June 24, 2012 well my tired 2.8 took its last breathe so its time for a new one. i found a low mile one for 150 bucks on the craigslist machine. will any 2.8 bolt up? or do i have to worry about some things? its an ax5 not a frenchie trans Link to comment Share on other sites More sharing options...
mvusse Posted June 24, 2012 Share Posted June 24, 2012 Any REAR WHEEL DRIVE 2.8 will bolt up, they were commonly found in S10 pickup trucks. So will any rear wheel drive 3.1 or 3.4 (out of a Camaro for example) for a bit extra grunt. They use the same block so all your accessories and carburetor will swap over. Link to comment Share on other sites More sharing options...
Pete M Posted June 24, 2012 Share Posted June 24, 2012 I seem to remember that you might need to have your flywheel rebalanced depending on which you go with. and the peugeot won't bolt to a 2.8/2.5. :thumbsup: Link to comment Share on other sites More sharing options...
mvusse Posted June 24, 2012 Share Posted June 24, 2012 Now that Pete refreshed my memory, yes, either the 3.1 or the 3.4 or both are internally balanced, so you may need to have your flywheel rebalanced neutrally. Link to comment Share on other sites More sharing options...
MJRemi Posted June 24, 2012 Share Posted June 24, 2012 Go for the 3.4 and get some extra horses! Link to comment Share on other sites More sharing options...
Eagle Posted June 25, 2012 Share Posted June 25, 2012 Go for the 3.4 and get some extra horses! More important, go with the 3.4 and get an engine that won't self-destruct. The 2.8 isn't even a good boat anchor. Link to comment Share on other sites More sharing options...
86FUBAR Posted June 25, 2012 Share Posted June 25, 2012 I personally love the 2.8 , my 2.8 other than being gutless put up with alot of abuse and neglect from me for the first 4 or 5 years before I decided to try and take care of it . Now with all that said after I swapped in the 3.4 and felt the power increase I was sold . The swap does include its own hurdles and increased cost compared just droping in another 2.8 but they are well worth it . If you do decide to go with another 2.8 why not just rebuild what you have if it is serviceable or atleast rebuild the doner ? Doing that will IMO do more for you in the long run than just replacing it with something else wether it be another 2.8 or a 3.4 as you will learn the basics of rebuilding an engine and it can be on be done on the cheap. Anyhow any RWD pushrod 2.8 3.1 or 3.4 will fit , they were all neutrally balanced from IIRC 1988 on and some will require an electric fuel pump and some other small things . Link to comment Share on other sites More sharing options...
carnuck Posted July 19, 2012 Share Posted July 19, 2012 Later 2.8 motors (starting late '86) are internally balanced. If the motor has EFI, it's balanced and the "improved" version. (wider rod bearings, etc) Link to comment Share on other sites More sharing options...
35 Dollars Posted July 19, 2012 Share Posted July 19, 2012 The best junk yard EFI fuel pump money can buy would be from a 1997-2000 ford explorer - it's a puller/pusher style: pulls from the tank, then pushes to the engine with up to 33psi or something like that. Link to comment Share on other sites More sharing options...
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