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V8 power output ?

Discussion in 'It's A V8 Mate!!' started by landowner, Mar 8, 2009.

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  1. landowner

    landowner Well-Known Member Full Member

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    What is the power output likely to be of a 3.5 on carbs with a ten to one comp ratio, bigger valves and crap branched manifolds (4 into 1)?
    Ball park figure will do, to the nearest 20 bhp or so.

    thank you :)
     
  2. The Mad Hat Man

    The Mad Hat Man Well-Known Member LZIR Despatch Agent

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    ask real steel
     
  3. shinydiscoball

    shinydiscoball New Member

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    I reackon 150 to 170 depending how much grief it's had in it's life. Get an efi, 190 straight out of the bag.
     
  4. Tig9619

    Tig9619 Active Member

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    U'll be lucky to get that mate. 3.5 efi was 160 outta the factory so now gonna be bout 130-140 i would have thought. Even a good 3.9 efi will be nowhere near its 180bhp.
    an old 3.5 on carbs (depending on what carbs will make a huge difference), considering they were supposed to be 130bhp when new probably not much more than that unless u have a weber.
    They really are not as powerful as people make out!
     
  5. landowner

    landowner Well-Known Member Full Member

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    Wallet emptying Webers eh:rolleyes:
    Cant beat the old SU as an all rounder and the bigger carbs only do any good at high engine revs in my opinion, any where else you just loose torque unless you are very good with the throttle on a twin choke.

    Thinking mine should be 120 to 150 when I've fettled the fuel and timing, hope so any way. If not I'll rip the exhausts off and it'll sound like 300 horses on half throttle:D
     
  6. Tig9619

    Tig9619 Active Member

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    Thats the way mate!
     
  7. shinydiscoball

    shinydiscoball New Member

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    Was thinking of 3.5 efi out of a sd1 vitesse 190 bhp 220 lbft in the last 1986 cars. Or try a small block chevy, if you have an understanding wife/bank manager:D
     
  8. shinydiscoball

    shinydiscoball New Member

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    According to some of the sd1 brigade, mega squirt fuelling quite entertaining on the 3.5 efi's too :D
     
  9. demitrious1973

    demitrious1973 New Member

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    small block chevy are extremely fast and very very reliable and they dont cost as much as you think they are £2000 should buy you a good one
     
  10. rojbarker

    rojbarker New Member

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    There's an LT1 350ci sbc for a camaro on ebay for £250 at the moment - 5.7l, injection, ali heads, good for 275 out of the factory with 350+ ft lbs torque. You can convert 'em to carb easily but a lot of people plumb em in with the original ecm. You can buy a complete LSI with tranny for $2000 if you look in the right places too and that's a serious lump!
     
  11. landowner

    landowner Well-Known Member Full Member

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    Got a 7.2 lite V8 (440cu) in the shed but cant get a gearbox for it and I think there is a small crack in the base of the block but it was running recently. Should be good for 380bhp I think
     
  12. gavbriggs

    gavbriggs Well-Known Member

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    can it be welded?

    i thought you could put just about any engine and box together with a conversion plate/bell housing
     
  13. landowner

    landowner Well-Known Member Full Member

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    Can be welded yup, but need a flywheel as it was auto and a gearbox so a bit out of my league as far as expense goes I'm afraid. may make a coffee table out of it and lift it in the house with a hoist.:D
     
  14. boydy1989

    boydy1989 Well-Known Member

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    no u wont youll sell it to me :)
     
  15. gavbriggs

    gavbriggs Well-Known Member

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    was reading a landy mag and a fella in there has the details of a man who can make anything fit to basically anything, dunno what cost but it might be worth a phone call!
     
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