Nitro

Discussion in 'System One Pit Buzz' started by tad2155, Nov 24, 2017.

  1. tad2155

    tad2155 Member

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    any one every ran some nitro in a alky BBC engine ,,had a guy tell me he had ran 20% ,,, is that correct and don't sound to safe

    gk
     
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    Last edited: Nov 24, 2017
  2. tad2155

    tad2155 Member

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    where is all the nitro heads with info
    will wat say u
     
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  3. andy wilfong

    andy wilfong Member

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    Had a customer try it one time, with the compression of an alc motor pretty much destroyed it, burnt all 8 to the rods
     
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  4. tad2155

    tad2155 Member

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  5. andy wilfong

    andy wilfong Member

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    It sounded good and was responsive, till it wasn't. !!
     
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  6. rb0804

    rb0804 Member

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    There have been plenty of people to run big block chevys on nitro over the years. Oddy did it, Greytek did it and a few others during the nitro coupe days at around 20%. There have been others in Nostalgia top fuel and funny car that have ran a Chevrolet style engine successfully. Steve Nichols comes to mind, he used to run the AJPE Billet BBC. I believe the McClain brothers have also done well in Top Fuel. There was a guy that was even running a blown Nitro small block for awhile. There have been many Chevrolet Jr fuelers as well. I have heard people say that 20% is the limit, but I just don’t believe that. It may hold true for say a certain compression ratio and camshaft... There was a good article on the inter webs a few years back about switching over to nitro and if I remember correctly 33% was the ideal number to maintain a proper air fuel ratio. On a final note, you probably would have gotten a better answer if this was in the Tech section and not the pit buzz where most of the gossip happens.
     
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  7. tad2155

    tad2155 Member

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    okie dokie thanks rb
     
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  8. vamcaptain

    vamcaptain Member

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  9. andy wilfong

    andy wilfong Member

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    There are a lot of chevy's on nitro, the original question was could you run an "ALCOHOL" BB on nitro, to me, the question is about compression, not motor style
     
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  10. tad2155

    tad2155 Member

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    THANX that is was I told the guy that was tellin me he had done it I told him from wat I had learned was more about having the compression correct or at least close he had also said he basically just added some nitro to his fuel tank and also he had a powerglide trans he was tryin to gain a few tenths and said he did
     
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  11. secondwindracing

    secondwindracing top alcohol

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  12. secondwindracing

    secondwindracing top alcohol

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    ANTHONY WHITFIELD....SMALL BLOCK CHEVY 98%
     
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  13. jeffj

    jeffj Member

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    Yes ; many years ago (1980's) I ran some. A crate LS7 454 with a small roller cam and a hilborn stack injector. PG 150-2 pump. Lenco 3 speed in a 125" 1900 pound altered which was super comp and fast brackets, it would go 8.50 all out on methanol; same jet and nozzles with 20% nitro sped it up to 8.0; I did run up to 30% with the same nozzles and smaller main jet occasionally. It never hurt a thing; biggest difference was the torque increase, it would have really liked a powerglide with a tight converter.
    Jeff Johnsen
     
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  14. tad2155

    tad2155 Member

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    thanx Jeff that is wat this guy was tellin me he had an alky engine and didn't change anything and just added 20% nitro and he picked up 4 tenths and he said he didn't hav any problems and didn't hurt anything either and was running a PG trans sounded fun
     
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