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Hot Rods LT 1 oil pan clearnce

Discussion in 'The Hokey Ass Message Board' started by ramrod2624, Jul 6, 2018.

  1. ramrod2624
    Joined: Dec 19, 2006
    Posts: 648

    ramrod2624
    Member

    I have a LT 1 engine I am contemplating putting in a 41 for d truck. what issues will I run into on this install? its a carburetor motor , will the stock pan clear the tie rods? ( straight axle car), are the motor mounts the same as a small block? is the overall length the same as a small block? will it bolt directly to a 350 trans?
     
    chryslerfan55 likes this.
  2. flatheadpete
    Joined: Oct 29, 2003
    Posts: 10,479

    flatheadpete
    Member
    from Burton, MI

    Late model LT1? Like from the 90's? The block is the same. The trans will bolt up. Engine mounts are the same. The heads and water pump are dumb on those engines.
     
    egads likes this.
  3. Deuces
    Joined: Nov 3, 2009
    Posts: 23,753

    Deuces

    '70-'72 LT-1????.... :)
     
    49ratfink and Moriarity like this.
  4. pitman
    Joined: May 14, 2006
    Posts: 5,148

    pitman

    Pete; As in dumb-koff?
    Poor flow? Design?
     
    flatheadpete likes this.

  5. flatheadpete
    Joined: Oct 29, 2003
    Posts: 10,479

    flatheadpete
    Member
    from Burton, MI

    :) I see whatcha did there.
     
  6. ramrod2624
    Joined: Dec 19, 2006
    Posts: 648

    ramrod2624
    Member

    looks like an early 90's motor, it has aluminum heads not sure what they are yet the only thing I have found stamped on the back of the head is 081534
    intake is 24502574.
    if im correct this is a revers flow cooling system, would I need to do any thing different with regards to cooling?
     
  7. do you have a photo? reverse flow uses the optispark distributor behind the water pump. water pump is run off of the cam. plumbing the motor correctly is important on those. not a lot of aftermarket brackets etc are available.
     
    egads likes this.
  8. egads
    Joined: Aug 23, 2011
    Posts: 1,419

    egads
    Member

    Why not just get a decent 350 and sell that problem to someone else? Have seen too many distributor's fail and I bet in that '40 it will be fun to pull the water pump to get to it.
     
    porkshop likes this.
  9. Deuces
    Joined: Nov 3, 2009
    Posts: 23,753

    Deuces

    A 4300 crank would do that motor some good.... And some 302 pistons.....
     
  10. ramrod2624
    Joined: Dec 19, 2006
    Posts: 648

    ramrod2624
    Member

    to answer the first question, why not get a decent 350? that was the plan until I started seeing cost... (Im a CHEAP ASS LOL) I have this engine sitting in the corner of the garage, plan on digging it out this weekend and really taking a look at it. its a new motor I picked up awhile back in a trade. figured if it all fits and works maybe use this and make some room in the shop.once I dig it out i guess i will know if its reverse flow and has an optispark distributor.
    would you say im asking for trouble if it is an Optispark? thats the feeling im getting
     
  11. egads
    Joined: Aug 23, 2011
    Posts: 1,419

    egads
    Member

    If your cheap you wont want the lt, just a cap and rotor is around $150.00. It will bolt right in , mount' ,exhaust ,trans. The water pump starts to leak and the first place the coolant goes is into the distributor. Problem's. Some people like 'em, some don't.
     
  12. Ebbsspeed
    Joined: Nov 11, 2005
    Posts: 6,250

    Ebbsspeed
    ALLIANCE MEMBER

    I've got one of those LT1 Optispark motors in my O/T car with 158,000 miles. 2nd water pump, original Optispark. Your mileage may vary....
     
    tb33anda3rd likes this.
  13. Sheep Dip
    Joined: Dec 29, 2010
    Posts: 1,572

    Sheep Dip
    Member
    from Central Ca

  14. ramrod2624
    Joined: Dec 19, 2006
    Posts: 648

    ramrod2624
    Member

    not that im against spending the money, I just figured I would look into this motor and see if it would work.. currently running a early 283 in the truck. its time for a change. I was looking at a 350/355hp for it, which I think would be nice. but also figured I could see whats in the corner of the shop before I spend the money. maybe spend it on some upgrades instead.
     
  15. trollst
    Joined: Jan 27, 2012
    Posts: 2,108

    trollst
    Member

    Whats an LT1?
     
  16. Deuces
    Joined: Nov 3, 2009
    Posts: 23,753

    Deuces

    1970 Corvette motor that was rated @370 hp.... Came with 2.02 camel hump heads, a solid lifter cam, 11:1 compression TRW Forged pistons, a Z/28 aluminum high rise intake and a 780 Holley carb with vacuum secondaries.... Basically all the goodies that GM had to offer....
     
    Last edited: Jul 6, 2018
    flatheadpete and olscrounger like this.
  17. egads
    Joined: Aug 23, 2011
    Posts: 1,419

    egads
    Member

    Think the op is talking about the early 90's lt1.I understand already having it but sometimes your better off with something else. Ebbspeed: Like I said ,some like em ,some don't. I know how much fun it is to put a pump and distributor in a late model corvette with this setup,(most late model sedan's have plenty of room in front) I wonder how much access there would be in that '40.
     
  18. 1946caddy
    Joined: Dec 18, 2013
    Posts: 2,060

    1946caddy
    Member
    from washington

    I'm guessing that you can't run the Optispark without the fuel injection and computer. A lot of Buick's, Camaro's and Corvette's used these motors with good success from somewhere in 1992 -1997 I think.
    I've seen articles on how to wire the computer if you have the original harness or there are after market one's available. It does move the distributor up front if that would help with firewall clearance.
     
    Last edited: Jul 6, 2018
  19. the motor in question is off topic to this forum. keep the 283.
    the second gen motor is a challenge, if your up to it do it, the results will be a smooth running, durable engine with good power and great fuel mileage. if your worried about the optispark and water pump just plan to change them at the 100k mile mark.:rolleyes::cool:
     
  20. 42merc
    Joined: Dec 19, 2010
    Posts: 894

    42merc
    Member

    No one has answered the original question.
    Does the pan fit ?
     
    Unkl Ian likes this.
  21. i think it would
     
    egads likes this.
  22. IIRC, the LT1 with Aluminum heads, was the Vette motor.
    LT1 made decent power in it's day.

    The ignition is completely stupid.
     
    Last edited: Jul 6, 2018
    egads likes this.
  23. Maybe try a streetrod board, they are more liklely to know about LT1 stuff.
     
  24. olscrounger
    Joined: Feb 23, 2008
    Posts: 4,770

    olscrounger
    ALLIANCE MEMBER

    Used a 70 LT1 in a 40 some years back-with dropped axle--tie rod cleared pan by 1/2" lock to lock--ran strong with that motor too! Don't know about the later type but had one in wife's 95 Impala SS-ran very well-had to chg wp at 70,000 miles. Never used any of these in all the 40's I've done-mostly 327's
     

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