Should a 383 4 speed burn the tires from a roll?
#3116174
01/24/23 09:33 PM
01/24/23 09:33 PM
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lilcuda
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My 1967 Belvedere II is a 383 4 barrel car with a 4 speed. It has the 68 383 hp cam (268/284 .450"/.458") and a 68 intake and carb with 68 exhaust manifolds. It is a low mileage car, but was drag raced in the late 60s. I took it out the other day. Although I have owned it almost 4 years, I've never tried spinning the tires. I tried to do it from a 10 mph roll, but it wouldn't do it. It didn't bog, but he low end just feels lazy. It seems to run really good once it gets to 3000 rpm.
Shouldn't it be able to spin bias ply F70-14 tires? Not that I am trying to win a burnout contest. I've just always felt the bottom end performance was lacking, so I did it as a test.
Thoughts?
'67 is an abbreviation of 1967 67' is an abbreviation of 67 feet They are not interchangeable.
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: lilcuda]
#3116192
01/24/23 10:20 PM
01/24/23 10:20 PM
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Joined: Dec 2004
Posts: 10,558 Rittman Ohio
fourgearsavoy
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I had a 66 Belvedere with a 361 automatic and it would do a rolling burnout with 3.23 gears Take a look at your timing curve first then check your accelerator circuit on the carb. I had the light springs in the distributor so I had full mechanical advance at 1800 RPM. I had an old Weiand dual plane with a 3310 Holley. Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: lilcuda]
#3116196
01/24/23 10:33 PM
01/24/23 10:33 PM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
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Striving for excellence
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Although I have owned it almost 4 years, I've never tried spinning the tires.
Last edited by Kern Dog; 01/24/23 10:34 PM.
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: Kern Dog]
#3116200
01/24/23 10:41 PM
01/24/23 10:41 PM
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Although I have owned it almost 4 years, I've never tried spinning the tires.
Agree, but there's some missing info here like what rear gear and if it has Suregrip or not?
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: Ramrod39]
#3116216
01/24/23 11:24 PM
01/24/23 11:24 PM
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My 383 4 speed Roadrunner with 3.23 suregrip would not break the tires loose from a roll. My '68 383 727 Roadrunner with 3.23 suregrip would not break the tires loose from a roll either....but would from a stop with brake torquing it.
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: GomangoCuda]
#3116227
01/25/23 12:15 AM
01/25/23 12:15 AM
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lilcuda
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It could be. The clutch does feel like it is nearing the end of its life, but the rpm didn’t jump up when I hit the gas.
'67 is an abbreviation of 1967 67' is an abbreviation of 67 feet They are not interchangeable.
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: A12]
#3116228
01/25/23 12:16 AM
01/25/23 12:16 AM
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lilcuda
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Although I have owned it almost 4 years, I've never tried spinning the tires.
Agree, but there's some missing info here like what rear gear and if it has Suregrip or not? I forgot to mention, it is a 3.23 Suregrip.
'67 is an abbreviation of 1967 67' is an abbreviation of 67 feet They are not interchangeable.
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: TJP]
#3116229
01/25/23 12:17 AM
01/25/23 12:17 AM
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lilcuda
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Lot's of variables to say yes or no. It takes a lot of torque to break the tires loose on a roll. I would check the timing as suggested but IMO it's asking a bit much out of a stock 383. What's the RPM at 10MPH in 1st gear? I don’t know off the top of my head. I was watching the road when I did it!
'67 is an abbreviation of 1967 67' is an abbreviation of 67 feet They are not interchangeable.
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: bobby66]
#3116302
01/25/23 06:46 AM
01/25/23 06:46 AM
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PROSTOCKTOM
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Maybe the timing is a little retarded, maybe the timing chain is getting sloppy? Maybe the throttle linkage isn't opening the carb all the way? Or maybe a little of all three. Tom
Molnar Technologies Full Service Dealer - Crankshafts & Connecting Rods
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: PROSTOCKTOM]
#3116322
01/25/23 07:10 AM
01/25/23 07:10 AM
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Maybe the timing is a little retarded, maybe the timing chain is getting sloppy? Maybe the throttle linkage isn't opening the carb all the way? Or maybe a little of all three. Tom Even with all of those corrected I still don't think it will "burn the tires" from a roll with 3.23 Suregrip.......well not on a dry road.
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: fastmark]
#3116355
01/25/23 11:27 AM
01/25/23 11:27 AM
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Way too many variables.
Type of tire, type of surface, how well suspension works... For example, my car doesn't spin a tire off the hit but also runs a 1.36 60 ft. time.
The only way to know what you are dealing with is to get some time either at the dragstrip or with a dragy.
Most cars of this vintage desperately need a distributor re-curve. Throw some Mr. Gasket #925B springs in it, set the timing total at 34* and make sure the mechanical advance works correctly.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Should a 383 4 speed burn the tires from a roll?
[Re: topside]
#3116397
01/25/23 01:15 PM
01/25/23 01:15 PM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
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Jigsaw is a 383 4 barrel with a 280/474 cam. 727 with 11" converter and 3.91 gears. 255-60-15s. It will peel out from a dead stop. It will smoke the tires when power braking. It will not smoke the tires from a 10 mph roll BUT if I had a 4 speed, bringing the rpms up to 3000 and dropping the clutch would do it....theoretically.
Last edited by Kern Dog; 01/25/23 01:16 PM.
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