Carburated LT1 350

Discussion in 'Engine Topic' started by dutch73camaro, Nov 12, 2019.

  1. dutch73camaro

    dutch73camaro Veteran Member

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    Hi Guys,

    The stock 350 i had laying around the rod bearings are gone and so the crankshaft.
    now i could build the 350 but it's a bare block so i have to buy everything.
    here in the netherlands the parts are about 2 times the price in the usa

    Now i could buy an complete LT1 swap from an caddilac fleetwood hurse.
    60.000 miles and has an 4L60E tranny complete with alternator hitorque starter, powersteering and all the stuff for about 2000 euro

    Advances of the gen2 lt1

    Reversed fow cooling ( so can run higher compression because the heads are cooled first ), and has already roller camshaft, and stock hypereutic flat top 10.2:1 pistons, the caddy version is the one with the good flowing iron vortech style heads. it also has stronger rods.

    Plans

    Putting my sbc vic jr intake on it ( modify holes )
    putting a 650 edelbrock carb
    plugging the optispark and put in an HEI
    low mount the alternator
    put sbc headers on it
    mount an lt4 hotcam or an other nice roller cam
    fit high sbc 350 alu valve covers with an adapterplate (centerbolt)

    then i have an clean looking carburator sbc engine
    when my 73 camaro is ready and if i want to maybe convert to holley sniper or something equal

    only problem is then the 4l60e so i have to make work the stock ecu for it.
    or putting a th2004r that is stage2 (buying an transcontrollor is to expensive for that gearbox i think)

    what do you guys think about this plans. power wise and cost savings wise
    i dont want to keep the FI because then i would swap an LS. i really like the SBC sound and looks.

    sorry of my langue i did my best.
     
  2. jeff swisher

    jeff swisher Veteran Member

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    My friend that owns a cam shop did the same thing to his LT1 carbed it (750 edelbrock) and ground himself a Hot cam. Stuck 3" exhaust on it with 8" long straight through "mufflers" stuck it into a short bed chevy truck 700R4.
    3000 stall converter. That thing ran very well.

    A couple years later I had him grind me a roller cam based off the LT4 hot cam.
    But I had him make it a single pattern 228 Duration @ .050 on intake and exhaust by using the exhaust master only. And had him stick it on a 110LSA.
    It would rev to 7200 RPM quick like in my 357" sbc with 906 heads.
    If you could find a TH350 your trans issues would be simplified.
    I run the TH350 in both of my V8 cars.
     
  3. dutch73camaro

    dutch73camaro Veteran Member

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    yes it is possible but i have an 4.56 rearend. so i need the overdrive.

    best trans for me is then a stronger th2004r but the 4l60e would be cheap in this deal.
    if i can only buy an complete LT1 engine without the trans i think i would go th2004r
    but the tv cable isnt easy also.
     
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  4. jeff swisher

    jeff swisher Veteran Member

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    Yea I ran 456 gears for many years but had 28.5" tire and TH 350.
    Yea slow lane at 3500 rpm usually. I have 3.70 gears and find myself running 3000-4000 rpm down the highway often.
    But you may have more than 50 miles between point A to point B that you must run often.
    I drove for 9 years with my 4.56 gears to work which was 25 miles from home and I was on 24 hour call.
    Worked great for pulling trailers and my boat to the lake, slow lane again though.
    Never hurt the engine.
    Hurt MPG a bit
     
  5. dutch73camaro

    dutch73camaro Veteran Member

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    For me its onlt a summer cruise / fun project.

    I daily drive an 05 mustang gt v8 manual
    But with the overdrive 120 kmh is 3000 rpm.

    I think 26" tires
     
  6. jeff swisher

    jeff swisher Veteran Member

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    Would not be all that bad then in my book.
    I have ran across the lake in a boat with the SBC spinning 5500rpm for over an hour.
    Keep temps and oil in check and all will be fine except your wallet.
    Super loud droning exhaust is annoying at high RPM sometimes.. I wore ear plugs and made my kids wear them.
     
  7. dutch73camaro

    dutch73camaro Veteran Member

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    Yes thats true. But why not choose an overdrive i dont have an gearbox at all now.
     
  8. jeff swisher

    jeff swisher Veteran Member

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    Yep if you have nothing then the OD would be the ticket.
    I had a 700R4 given to me but that was years ago and all my buddies that had them were breaking them.
    And 4L60's were not living either and I had no issues with my TH350's and i was quicker and faster than they were by a long ways.
    One of them only ran 18's in the 1/4.. but it was a 350" Truck.

    I now have 2 of the 2004R transmissions but have not went through them. I got them for 100 each and a pile of valve bodies and parts came with them.
    One day I may stick one in.. or maybe not.
    I read the 200 was stronger than the 700 but i think today if I really wanted an OD I would do the 4L80 with a full manual valve body.
    If one falls in my lap.
    You know how that goes.
     
  9. 1980RS

    1980RS Veteran Member

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    The newer LT1 with some ported factory heads and an LT4 hot cam would go pretty good. There is even an intake for the reverse flow heads.
     
  10. dutch73camaro

    dutch73camaro Veteran Member

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    1996 lt1
     

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