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setting timming on a 350

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Old Jul 21, 2009 | 12:53 AM
  #1  
saliger64504's Avatar
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From: St.Joseph Mo
Car: 1984 firebird trans am
Engine: 383 stroker
Transmission: th350
Axle/Gears: 10 bolt posi with 373 ring and pini
setting timming on a 350

a little info about my car its a 1984 firebird i bought a 350 from a guy that said when he bought it that it was already bored 40 over im not sure if it is or not i do know from running the nembers ont he block that it is a 87-95 350 2 bolt main. i have a th350 tranns in it with a th400 converter.

ok when i start the car it idles fine but has to worm up or it dies when i give it gas it dogs down the take a secent for it to catch up when i did the timming on this i brong the number one cyclender to tdc and dropped the dis. i set the timing to 0 useing a timing gun and thats all i have done to it is my timming right or do i need to advance it 12 Degress

Last edited by saliger64504; Jul 21, 2009 at 01:53 AM.
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Old Jul 22, 2009 | 02:59 PM
  #2  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Non-computer, set it at 12 degrees BTDC at idle with the vacuum disconnected.

Computer type, set it at 6 degrees BTDC at idle with the flat 4-wire connector going to the distributor disconnected.
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Old Jul 23, 2009 | 09:03 AM
  #3  
saliger64504's Avatar
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From: St.Joseph Mo
Car: 1984 firebird trans am
Engine: 383 stroker
Transmission: th350
Axle/Gears: 10 bolt posi with 373 ring and pini
Re: setting timming on a 350

i dont think i have it being coputer controled its a carbed 350 and im useiing my stock hei dis from my 305
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Old Jul 23, 2009 | 06:27 PM
  #4  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
A stock 305 HEI distributor is computer controlled (except in Canada). Without a computer controlled carburetor, it will never work correctly. You can set the "total" timing to 34-36 degrees, but it will not start easily and won't get very good gas mileage.
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Old Jul 24, 2009 | 08:37 AM
  #5  
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Car: 84 Trans am
Engine: 355
Transmission: TH400
Axle/Gears: 343 rear end
Re: setting timming on a 350

Originally Posted by five7kid
A stock 305 HEI distributor is computer controlled (except in Canada). Without a computer controlled carburetor, it will never work correctly. You can set the "total" timing to 34-36 degrees, but it will not start easily and won't get very good gas mileage.
Not neccesarily.. i have an 84 TA with a carbed 355 and an hei distributor. the electronic hookups are for the tach and the battery. other than that it is vacuum advance... not to go against you or anything. just letting you know.
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Old Jul 24, 2009 | 08:39 AM
  #6  
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Car: 84 Trans am
Engine: 355
Transmission: TH400
Axle/Gears: 343 rear end
Re: setting timming on a 350

but if it isnt vacuum or mechanical advance than you're right it is computer controlled..
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Old Jul 24, 2009 | 07:14 PM
  #7  
saliger64504's Avatar
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From: St.Joseph Mo
Car: 1984 firebird trans am
Engine: 383 stroker
Transmission: th350
Axle/Gears: 10 bolt posi with 373 ring and pini
Re: setting timming on a 350

yeamine only has 2 wires that go into the dis one is pink and the other is brown the pink is my batery and my brown gose to my tac amd i have a hose that gose from my dix to my carb
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