timing
04-24-2008, 04:01 PM
#1
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Engine: 355
Axle/Gears: 2.73
timing
hi im new to this great site, well i have an 87 iroc z witrh a 305 tpi auto, i have all the free mods, venom balanced 19 inj, edelbrock cat back, airfoil, some suspensin goodies, and the fuel pressuer turned up to 46 psi my queston is should i change the base timing at all? the car seems to be running rich as the exhaust tips are a lot blacker inside then before and my fuel economy has been down a litte, thanks
04-25-2008, 09:38 AM
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Car: 88 Formula, 72 Nova, 68 Chevelle
Engine: L98, mild 350, L79 327
Transmission: 700R4, M20, M20
Axle/Gears: 9b 327,10b 373, 12b 331
Re: timing
Advancing the timing 3 to 4 degrees (9-10 degrees total, stock is 6) would do it some good. My L98 runs at 10 with just about all the mods u listed, and i drive it everyday in the summer. also brought my et's down about .2 . And yea my fuel milage went down some when i did the AFPR also, but so did my times at the wednesday night drags 
Last edited by FormulaL98; 04-25-2008 at 09:43 AM.
04-25-2008, 09:46 AM
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Car: 88 Formula, 72 Nova, 68 Chevelle
Engine: L98, mild 350, L79 327
Transmission: 700R4, M20, M20
Axle/Gears: 9b 327,10b 373, 12b 331
Re: timing
O yea and maybe you should look into a gear swap also. something like 3:42 or 3:73 (but no more than that) would really make that thing pull on the street
04-26-2008, 04:10 PM
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Engine: 355
Axle/Gears: 2.73
Re: timing
ya i have long tubes to install then i am geting 3.23 i dont want to bad fuel economy so i dont want to go any higher or lower whatever way its called
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