Register now to get rid of these ads!

Iron Duke with a 700R4

Discussion in 'The Hokey Ass Message Board' started by woodman, Jan 29, 2010.

  1. woodman
    Joined: May 21, 2006
    Posts: 106

    woodman
    Member

    I recently overhauled an Iron Duke for my son. He is going in another direction with his hot rod. The motor sets in the corner of my shop staring at me every day. So here is my imagination getting me in trouble again. I want to put this Iron Duke in a light small hot rod coupled with a 700r4 for cruising. I could use some insight from anyone who has gone in this direction, hopefully with success. Woody
     
  2. I had one for my T and then got crazy with a 348. Bought it from a guy that had one in his full fendered 27. He loves how it drives in a light car.
     
  3. sdluck
    Joined: Sep 19, 2006
    Posts: 2,678

    sdluck
    Member

    2004r might be a better choice shorter trans and closer gear spacing.P have a friend that has a 1929 full fendered steel ford with 2.3 ford with a c4 and he drives it every where even cross country.
     
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 47,940

    squirrel
    Member

    iron duke has the small (60 degree V6 type) bellhousing, right? they make a 700 case that fits it, but I don't know of a 200-4R case that does.

    Should be just like any other bare bones automatic 2.5 S-10 from the 80s :)
     

  5. sdluck
    Joined: Sep 19, 2006
    Posts: 2,678

    sdluck
    Member

    You are correct.Used on Chevy 60 degree V6's, 4 cylinders and other FWD engines
    2.0L (OHV I4), 2.2L (OHV I4), 2.5L (OHV "Iron Duke" I4), 2.8L (60* V6), 3.0L (90* V6), 3.1L & 3100 (60* V6), 3.3L & 3300 (90* V6), 3.4 & 3400 (60* V6), 3500 (60* V6), 3.6L (60* V6), 3800 (90*V6), 3.9L (60* V6), 4.1L V8, 4.5L V8, 4.9L V8
     
  6. hugh m
    Joined: Jul 18, 2007
    Posts: 2,142

    hugh m
    Member
    from ct.

    My Iron Duke T modified has what I think is a 200 R4, came with a lockup kit which I never used, seems to work fine without it. It has the newer metric bell housing.
     
  7. oldtin
    Joined: Dec 22, 2001
    Posts: 482

    oldtin
    Member

    The Iron Duke and its cousin the Mercruiser I/O both had the small block chevy bell housing attachment. Later GM 2.5L 4cyls came with either the 60 degree or the SBC bolt pattern depending on application.
     
  8. sdluck
    Joined: Sep 19, 2006
    Posts: 2,678

    sdluck
    Member

    Information on the internet shows iron duke to fit a 60 degree bellhousing,while the chevy 4 cyl used in midgets used a 90 degree bellhousing
     
  9. The 153 Chevy and the 181 Mercruiser 4 cyl engines have a chevy v-8 bellhousing pattern and are not iron duke engines.

    Charlie
     
    Last edited: Jan 29, 2010

  10. Also used in North-South cars, too.

    Probably shoudn't admit it, but I had an '82 Camaro with a 151 and a 4 speed. They (and the Firebirds) also came with the 200r autos, so 200's for the "traditional" orientation is available.

    I think S-10s had them, too! And Monza-types!
     
  11. OFT
    Joined: Jun 1, 2005
    Posts: 547

    OFT
    Member

    It is the 153" Chevy II motor your thinking of, along with the 181 Mercruiser. The real Iron Duke was the 151" motor used in the Pont.

    Just because something is on the internet does not make it "true" (2.5L is not a true Iron Duke). Check out 6=8 at Clifford Performace.

    Earl
     
  12. Mr48chev
    Joined: Dec 28, 2007
    Posts: 28,525

    Mr48chev
    ALLIANCE MEMBER

    Ok my day is good, I learned something. The earlier Chevy II heads had the intake and exhaust on the same side 153 Ci.
    The Iron Dukes are cross flow.
    http://en.wikipedia.org/wiki/GM_Iron_Duke_engine
    I had one out of an Astre and let it get away years ago and wish I had another one.

    Great engine for a light weight rod and with the right rear and od it might be quick around town and able to get a lot of smiles per gallon on the freeway.
     
  13. gimpyshotrods
    Joined: May 20, 2009
    Posts: 17,910

    gimpyshotrods
    ALLIANCE MEMBER

    RWD Iron Dukes, and even some found in Jeeps, circa '80-'84 have the Chevrolet V8 bell pattern. FWD ones seem to have the smaller, metric pattern.

    I'd run the 200r4. I believe that they take less horsepower to run than the 700r4. As far as I know, both the 200r4 and the 700r4 can be found with either bell, so it all can be done, so long as it matches up. I think the 200r4 weighs less too.
     
  14. hhatton
    Joined: Dec 21, 2008
    Posts: 35

    hhatton
    Member

    I had a 151 (not sure if its a iron duke) in my 85 jeep with a 5 speed ,i think it was a early t-5. That think ran like stink on and off road. Only posting this because real hot rods have 3 pedals.And s-10 set-up might bolt right up.
     
  15. Frosty21
    Joined: Jan 25, 2007
    Posts: 958

    Frosty21
    Member
    from KY

    My '88 S-10 has a Iron Duke/5-Speed. About 30mpg and quite a bit of power with a 4.11 rear-end. Their very easy to service, and impossible to destroy. 10x the motor the shitty 2.2 is.

    We had one in a CJ-Jeep, extreme gas mileage and never any problems. My best friend has one in his S-10, tried to kill it to warrant a 4.3 swap and it never gave up. Held no oil pressure, and hes still driving it. My cousin had one in a '87 S-10 that he drove and gave hell for over a decade, he finnaly traded it for a 4x4 4.3 truck and wishes he still had the Duke.
     
  16. Hyway Hauler
    Joined: Aug 31, 2009
    Posts: 670

    Hyway Hauler
    Member

    Are these 2.5 "4 tech" engines that desirable in the hot rod world? I just crushed 4 S-10's that had these engines. 2 were 4 speed T4 trucks, one had a T5, and the other, a 200r4...who knew...I didn't, just thought they were old junk.
     
  17. Frosty21
    Joined: Jan 25, 2007
    Posts: 958

    Frosty21
    Member
    from KY

    There probably one of the few 4-cylinders ever made that adapt well to none commuter duty. Their not ugly, and have no timing belt/chain to randomly fly off.

    Around here, a S-10 frame/chassis goes for about $200 to a hot rodder or somebody replacing their rusted out POS. Rear ends are worth about $100 and people are always looking for one for some reason or another. The junk man gives $130 for "little trucks".
     
  18. Of course, the T5 will bring as much as the truck did crushed, but hey, why read the internet and learn what you have before you junk it.
     
    sko_ford likes this.
  19. kraka138
    Joined: Oct 3, 2007
    Posts: 293

    kraka138
    Member

    ive been throwing around the idea of a daily tudor sedan with a 2.5 and t-5, i think it would plenty of motor for it
     
  20. Frosty21
    Joined: Jan 25, 2007
    Posts: 958

    Frosty21
    Member
    from KY

    They seem to motivate a 2500-3000 pound S-10 around fairly well.
     
  21. David Chandler
    Joined: Jan 27, 2007
    Posts: 1,101

    David Chandler
    Member

    My wife's S 10 has the 2.5/151 "tech" crossflow engine, and a 4 speed automatic. After going through 4 transmission rebuilds, and one engine rebuild I'd never own another one. And this was not driven hard, just day to day commuting most of the time at 35 or 40 miles per hour.
    That said, if it had a turbo 350 on it, (which it won't fit) I'd probably use the engine for something light weight.
     
  22. Frosty21
    Joined: Jan 25, 2007
    Posts: 958

    Frosty21
    Member
    from KY

    The automatic ones were turds. GM perfected making automatics never shift at the right time or rpm in the 80's it seems. If they had any options, like A/C, they sucked as well.
     
  23. hugh m
    Joined: Jul 18, 2007
    Posts: 2,142

    hugh m
    Member
    from ct.

    By the way, last night I just ordered an adapter from Speedway (not to get off topic) to hookup an Iron Duke Pontiac to a Chevy 350 trans. Would think the adapters would work for any SBC bell , but you will be on your own as far as a flex plate goes.
     
  24. nlualum82
    Joined: Dec 24, 2005
    Posts: 103

    nlualum82
    Member
    from Oregon

    Curious about that Speedway adapter, hugh m.
    I wonder if it would work for mating a mercruiser 2.5 (sbc bellhousing pattern) to a 700r4 that was behind a 2.5 or 2.8 60 degree pattern motor.
     
  25. Typo back there on post #9. I knew it was a 153 but my one finger typing didn't. Thanks for catching it OFT.
     
  26. Gary Addcox
    Joined: Aug 28, 2009
    Posts: 2,416

    Gary Addcox
    ALLIANCE MEMBER

    The original iron duke starting in '61 had the same bell housing as the SBC. I used one in a '34 Ford 2-dr with an Offenhauser adaptor to a '39 Ford trans. Worked fine with a 3:25 or 3:54 banjo.
     
  27. Gary Addcox
    Joined: Aug 28, 2009
    Posts: 2,416

    Gary Addcox
    ALLIANCE MEMBER

    I want to impart this bit of info about TH200-4R's. The trans guru in San Antonio who built 4 700R4's for our club's rides, including mine, doesn't care for the smaller trans. He would build one for my '40 but said it would cost over twice as much to make it as roadworthy as my current 700R4 and the rest of the transmissions he has built for us. His rebuilts have not failed any of us, and we don't baby our cars. Just for your information. Good luck whichever way you go.
     
  28. aaggie
    Joined: Nov 21, 2009
    Posts: 2,531

    aaggie
    ALLIANCE MEMBER

    True Iron Duke engines were also used in the small AMC cars like Gremlins and Hornet/Spirit so when crawling around the junk yards lift the hoods and look.
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.