gm 2.5 iron duke fly wheel

[fordrunner]

I have a 2.5 duke out of a 83 eagle wagon stashed in the back the garage so hears my question it has a manual flywheel on it  and I'm thinking of building a buggy with it but I want to use a 700r4 so will a flywheel out of like a 90 2.5 s10 work on it thanks

[xjs3667]

Yes the flywheel should work, as far as I know....... but ummmm the engine will not bolt up to a 700r4 trans, they are different bell housings, the bolt pattern on the 2.5 is for a 60* bell housing and the bolt pattern on the 700r4 is a 90* bell housing, for the 3.8 rwd, 4.3 and SBC,  so in turn sure the flywheel will bolt up to the converter, but I'm sure the spacing will be off.... and the belhousing bolt pattern is different, so NO your combo will not work. Unless you buy adapters, which IMO would not at all be cost effective. 

[fordrunner]

It has a 90* bell on it from what I found it a Pontiac  2.5 duke

[lilred]

The 2.5 is a 60 degree housing. There's 90 degree housing for the t5 manual but You need a automatic out of a 2.5 or 2.8 s10

[lilred]

Unless you get a mercruiser 2.5/3.0  block those are 90 degree but they are usually in boat's

[marshall]

Looks like a Chevy pattern to me?

[lilred]

Yeah I'm going to look at one of mine when I get home. Something looks weird

[betterbeaters]

looks like a normal gm belhousing?

[xjs3667]

http://www.jalopyjournal.com/forum/archive/index.php/t-441184.html


I would say you either got a rare factory engine that did come with a 90* BP or its a boat motor,  and yes the 700r4 will bolt right up to it, just double check the spacing when using that flywheel, as you may have to get a spacer.

But I learned something new..... I never knew the 2.5 came factory with 90* BP, even some older jeeps had em. 

[fordrunner]

Ya it a little odd I took it out of a amc wagon so you never know what there going to have its a 2.5 had a ford 3 plus or bolted to it with a odd t case that's a AMC for you just don't know if it would take the same flywheel as a newer 2.5

[ToughBowtieTruck]

From what I know it is only a real Iron Duke if it has the 90  degree universal GM paftern. The regular old 4 cylinders are 60 degree patterns.

[lilred]

The "real" iron duke was a 60s motor. The s10 ones just have a similar displacement and quality running life hahaha. Atleast that's what I've been told

[BigFrank]

From what I know it is only a real Iron Duke if it has the 90  degree universal GM paftern. The regular old 4 cylinders are 60 degree patterns.

you need the older style flywheel  from a  iron headed engine

[fordrunner]

From what I know it is only a real Iron Duke if it has the 90  degree universal GM paftern. The regular old 4 cylinders are 60 degree patterns.

you need the older style flywheel  from a  iron headed engine

thanks that's what I needed to know all these motors I seen always bine hooked to a stick so maybe I'm going to be stuck with the stick witch ain't to bad