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Thread: Timing, sbc
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01-03-2009 #1
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Timing, sbc
I installed a new top end on my sbc, now its hard to start, I thought I was a tooth off, but I am not, but once the engine is warm it starts ok...any advice?
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01-03-2009 #2
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sounds like a choke problem, this usually happens to a cold motor and once it heats up it runs better. Could be timing but if timing was off I don't think it would run better even after it warmed up.
Carl Wilson
1968 Camaro - T-56 6 speed - 383 Stroker, 2014 Mustang GT seats. FiTech EFI, Tanks Inc. Tank with Deutschwerks fuel pump.
01-03-2009 #3
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it has a 750 dominator on it, I ran this carb with old setup, funny thing is the back plugs are wet(gas) and the front are dry.....it wants to fire so bad but it will not take off...
01-03-2009 #4
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whatsyour timing at?
The Gutless Cutlass, is no more.
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01-03-2009 #5
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did you adjust the carb for the new setup?
work in progress--for the next 10 years.
1987 monte carlo ss 383ci, 9.7:1, xe274 cam, vortec heads, 200r4, 3.73 posi.
01-03-2009 #6
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timing I think is around 38 or so. I cannot keep it running long enough to check, its starting to load up now. Will post later tommorow...
01-04-2009 #7
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Check wires, plugs, dist. cap, rotor etc.
Carl Wilson
1968 Camaro - T-56 6 speed - 383 Stroker, 2014 Mustang GT seats. FiTech EFI, Tanks Inc. Tank with Deutschwerks fuel pump.
03-20-2009 #8
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Are you sure that the rear plugs are wet with gas ?, with manifold swaps it is possible to have an oil leak in certain areas of the intake flange and it can sometimes be hard to determine if the plugs are fouled from gas or oil, if you can't find the problem using the above suggestions remove the manifold and look for leaking gaskets or oily ports, don't be afraid to reinstall the manifold with a thin layer of silicone on each side of the port. We test small blocks on the dyno quite a bit and run into this problem once in a while.
DaleLast edited by Pro Stock; 03-20-2009 at 10:51 PM. Reason: spelling
03-21-2009 #9
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vacuum leak? intake tight, carb tight....
Steve
'68 Camaro - SBC, TKO600, 3.73 Moser 12-bolt, Speedtech, ATS-AFX, Hotchkis, Forgeline, Ron Davis and C5 brakes (Kore3), Holley Terminator TBI.
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03-21-2009 #10
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Did you double check your plug wires?
One build, I checked it twice on installation. Then for whatever reason my helper pulled two wires, and then when the were put back, they were swapped. Was scratching my head for a while because I was "sure the wires were correct."
Red Forman: "The Mustang's front end is problematic; get yourself a Firebird."
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