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Thread: sbc

  1. #1

    sbc

    hey guys i just was wondering if anyone was racing with a 383 sbc and what you guys was shifting the engine at. i was talking to a friend and he said he was shifting around 7200 and 7300 with his 383 i have never shifted my 383 over 6800. let me know what you guys shift at thanks mack.

  2. #2
    Senior Member RACING JUNKIE mopar1968's Avatar
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    Well i run a small block Mopar and i shift it @ 7400 rpm all day long :!: :!:



    ''JUST MY TWO CENT'S WORTH''
    Head's up the true drag race!!

  3. #3
    can't wait for the track to open and try shifting it at 7200 or ????, car went 11.07 shifting @ 6800 rpm, hope to get it in the 10's this year.

  4. #4
    Senior Member DYNO OPERATOR
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    What do you have for a cam and heads? That'll determine where you should shift.......

  5. #5
    the heads are pro actions 235 208 int 160 exh the cam is comp 630-630 solid roller, but i also have a comp 675-645 solid roller which one would you go with. oh yea the trans is p/g 1.76 ford 9" with 4.71 gears 28x10.5x15's m/t slicks. in a 87 camaro around 3200 pounds.

  6. #6
    Senior Member RACING JUNKIE
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    @ 3200lbs i'd stay with the cam you have in it .630/.630 for the low end torque.

    JMO

    Zip.

  7. #7
    thanks for the replys guys and good luck this year and be safe.

  8. #8
    hey bigmack how are your 60 foot times with your combo.

  9. #9
    it's in the low 1.5's hope to get it down in the 1.4's this year

  10. #10
    Senior Member MASTER BUILDER
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    Quote Originally Posted by bigmack
    the heads are pro actions 235 208 int 160 exh the cam is comp 630-630 solid roller, but i also have a comp 675-645 solid roller which one would you go with. oh yea the trans is p/g 1.76 ford 9" with 4.71 gears 28x10.5x15's m/t slicks. in a 87 camaro around 3200 pounds.
    I would guess with 235 heads and if your cam will rev to 7300-7500 rpm, that is were these heads would have to be to take advantage of that big a head........my 383 sbc with afr 210 heads peaked on horse power at 6800 rpm and my camshaft is good to 7400 rpm.........so i shift out of first gear at 6700 rpm with my glide and go through the traps at 7000 rpm.....works for me, but if i have 235 heads i would have to rev it way higher to gain anything


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