rejetting carb..
08-15-2001, 08:20 AM
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Car: 1982 Z28
Engine: 355
Transmission: T56
Axle/Gears: 12 Bolt
rejetting carb..
I am in the process of jetting my Demon to suit my motor and the question i have is .. after i change the jets do i need to reset the idle mixture on the carb? I think i have read that the jets have no effect on the idle mixture but am not 100% sure. The car still idles and runs fine but i want to be sure,and i have been to lazy to hook up a vacuum gauge to see where i am at. Any help is appreciated..Thankx in advance.
John
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John
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08-17-2001, 01:08 PM
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Right, jets wont affect the idle as long as the butterflies aren't open enough to expose the transfer slot. On my 750 Speed Demon I had to go down several sizes.
Bear Tracks
Bear Tracks
08-17-2001, 02:41 PM
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Car: 1982 Z28
Engine: 355
Transmission: T56
Axle/Gears: 12 Bolt
hey greearhr ...how many jet sizes did you go down?I am running a 750 DP on my 355 and am at 70 primary..77 secondary and am curious to see where abouts everyone is jetted at for their engine combo.I have a 10:1 355,afr 195's,xtreme energy 274 cam,stealth intake and 750 DP speed demon with a 4 speed and 3.73's.Thanks for the help so far everyone!!I'm getting there.
John
John
08-19-2001, 06:28 PM
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Car: 86 z28
Engine: Hyd. roller 498
Transmission: 700r4
Axle/Gears: 12 bolt 3.90 gears
My current setup has 67primaries 75 secondaries. I usually tune my carb by reading the plugs.
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383 86 Camaro Z28
10.5:1compression Dart Pro 1 Aluminum heads 215cc>2.05/1.60 valves,400 steel crank,cam specs:224/234 at 050 525/525 lift,3500 stall converter,shift kit,3.42 gears,770 Holley Avenger,Victor Jr. Intake,true dual exh,Hooker headers with 40 series Flowmasters,MSD Coil and Module.ALSO SECOND GEN Z28---mods:454 BBC,.546 max lift(doug herbert cam ) 750 Holley vac sec. ,Edelbrock Performer manifold,Holley electric fuel pump,Hooker headers,Flowmaster mufflers,beefed up 700r4 tranny, 3.90 gears, powertrax unit, B&M console shifter.
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383 86 Camaro Z28
10.5:1compression Dart Pro 1 Aluminum heads 215cc>2.05/1.60 valves,400 steel crank,cam specs:224/234 at 050 525/525 lift,3500 stall converter,shift kit,3.42 gears,770 Holley Avenger,Victor Jr. Intake,true dual exh,Hooker headers with 40 series Flowmasters,MSD Coil and Module.ALSO SECOND GEN Z28---mods:454 BBC,.546 max lift(doug herbert cam ) 750 Holley vac sec. ,Edelbrock Performer manifold,Holley electric fuel pump,Hooker headers,Flowmaster mufflers,beefed up 700r4 tranny, 3.90 gears, powertrax unit, B&M console shifter.
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