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Thread: Rate my engine?

  1. #1

    Rate my engine?

    I had a 355 built for my son to run for his first year out of jr dragsters. Give me your opinions of what i can expect from this motor hp and torque wise. we are running 1/8th mile and are hoping to run in the 9.0 range.

    355 smallblock chevy
    performer cam 278 adv duration .420/.442 lift
    performer vortec intake
    headers
    vortec heads with upgraded springs
    flat top pistons (keith black huepertectic)
    650 speed demon carb
    Th2oo4r with 2200 stall (built heavy duty with shift kit)
    8.5 inch rear with 3:73 gears
    Car is a 87 Monte SS weighs about 3300

  2. #2
    Senior Member SENIOR BUILDER chevynovaman's Avatar
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    GUESS== 325-335 HP 13.9 1/4 MILE AT 99 MPH

  3. #3
    Administrator RACING JUNKIE bjuice's Avatar
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    i think your looking at 350hp on the high side with 290/300 ft lbs of TQ.

    The car will most likely run 9.60 range @ 68/70 MPH in the 1/8..This is just My opinion based on what i had at 16 yrs old.

    Little more stall (3,000) and More gear (4.30) with 26 inch tires will make a huge difference once he gets ready to get a little quicker...and should get you more towards the 9.0 range...right Now she is gonna lug some with the converter and Gear..cause there's not a whole lot of motor nor gear,converter to get the heavy car moving
    Bjuice..

    "I'M YOUR HUCKLEBERRY ! "

  4. #4
    Senior Member RACING JUNKIE
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    Reguardless of what it runs, i'm happy to see that you are moving up, and starting a little slower for him to get used too driving the big car from JR dragsters, so many of the top driver of today got their start in the JR's and it's a perfect starting point for kids, if i had any at home of the right age i'll guarentee you i would have them in the JR's.
    Good luck and keep on keeping on

    Zip

  5. #5
    Thanks,, you are right, the Jrs were some good times this will be our first year out of them and ill miss it. I just want him to get a season in a slower car before he gets in a fast one.His class starts at 9.0 and up so if i can get him at the lower 9s he will be chasing more often. In the Jrs he was excellent at running the top end.

  6. #6
    Member CRAFTSMAN
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    saying with 8:5:1 compression,.I come up with


    321HP @ 5000
    360 TQ @ 4000

    I think you probly will do better than nines in the 1/8, and Once he
    learns the car and drives it right it will probly run 8.70-8.80`s,...
    put a 4.11 in it you would be more better running 1/8 mile times
    in the 8.50`s.


    Smoldery Smokey Burnouts To You All

  7. #7
    Senior Member MASTER BUILDER
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    rate my engine

    Back in the summer I finished up a 355 for a customer that is 19yrs. old and is just starting. Flattop piston, .450" lift cam, 1.94valve stock heads, performer intake, with a 600vacuum holley. converted to a 350 tranny w/ 3500stall & 3.73 gear, also an 87 monte SS, radial tire. I opted not to use a double pumper carb. at this time because of his experiance & the weight of the car. When he leaves at 2000rpm has very little spinning runs 9.13-9.18 in the 1/8th mi. I made him go down the track 8 times that day during test/tune. started off at 9.27. He drives it everyday. Now he is going to try a 750vacuum carb and a set of 26x8slicks this weekend. Kris

  8. #8
    Senior Member MASTER BUILDER
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    Re: rate my engine

    Quote Originally Posted by kbartley
    Back in the summer I finished up a 355 for a customer that is 19yrs. old and is just starting. Flattop piston, .450" lift cam, 1.94valve stock heads, performer intake, with a 600vacuum holley. converted to a 350 tranny w/ 3500stall & 3.73 gear, also an 87 monte SS, radial tire. I opted not to use a double pumper carb. at this time because of his experiance & the weight of the car. When he leaves at 2000rpm has very little spinning runs 9.13-9.18 in the 1/8th mi. I made him go down the track 8 times that day during test/tune. started off at 9.27. He drives it everyday. Now he is going to try a 750vacuum carb and a set of 26x8slicks this weekend. Kris
    ...perfect car to learn on...I learned on a 73 SS Nova with 396 BBC mild motor, with solid cam made 450hp went 12.00's woth 3000stall conv, and 4.11's in a 12 bolt....and a dual point distributor.....changed to a unilite distrib went 11.80's....memories....

  9. #9
    Administrator RACING JUNKIE bjuice's Avatar
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    Re: rate my engine

    Quote Originally Posted by radicalz
    Quote Originally Posted by kbartley
    Back in the summer I finished up a 355 for a customer that is 19yrs. old and is just starting. Flattop piston, .450" lift cam, 1.94valve stock heads, performer intake, with a 600vacuum holley. converted to a 350 tranny w/ 3500stall & 3.73 gear, also an 87 monte SS, radial tire. I opted not to use a double pumper carb. at this time because of his experiance & the weight of the car. When he leaves at 2000rpm has very little spinning runs 9.13-9.18 in the 1/8th mi. I made him go down the track 8 times that day during test/tune. started off at 9.27. He drives it everyday. Now he is going to try a 750vacuum carb and a set of 26x8slicks this weekend. Kris
    ...perfect car to learn on...I learned on a 73 SS Nova with 396 BBC mild motor, with solid cam made 450hp went 12.00's woth 3000stall conv, and 4.11's in a 12 bolt....and a dual point distributor.....changed to a unilite distrib went 11.80's....memories....
    did you carry an extra module in the glove box for that uni-light ?...lol

    aaawww gawd those old Mallory Uni-lights........ :shock:
    Bjuice..

    "I'M YOUR HUCKLEBERRY ! "

  10. #10
    Senior Member MASTER BUILDER
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    rate my engine

    we took the monte to the track, the one I mentioned earlier. did not change the tires or go to a bigger carb. I just tuned the 600vacuum that is on there now. yesterday was the first points race so he only got to make 2 passes. firstr pass he ran a 9.07, second pass ran a 9.01 at 77 mph. weather was about the same as 2 weeks ago.

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