what would be a good setting to put my timing at on an 88 Trans Am w/ 305 TPI...all stock except for flowmaster cat-back.....also, what direction do i turn the distributer....i'm not good w/ doing timing and i don't want to screw it up...i just heard by advancing the timing a little it can pick you up a little more speed...thanks

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88 Trans Am, 5.0L TPI, flowmaster cat back, high flow cat, WS-6 performance suspension, black w/ t-tops, automatic transmission....soon to be armed w/ a 5.7 TPI

 

I would set it to 9 degrees.

You have to disconnect a black/tan wire at the passager firewall and then loosen the distributor screw and turn it I believe anti clock vise.

Make sure you get a timing light to double check your timing mark. You might have to clean that tab off, they can get ugly.

Just make sure you clean all the codes before you take off. You should feel a little difference in throttle response and should get better mileage too.

Good luck.

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89Iroc, 305 TPI, WC T5, 3.08 Posi, Headers, Hooker Y-Pipe, 3 inch over the axle, Flowmaster 80, No Cat, Aluminium Driveshaft, Ported Plenum, Air Foil, K&N, AFPR, All free mods,

 

i have my 350 set at 10* with the stock chip. Stock is 6* 8-10* would be a nice difference just make sure u use 92+ octane gas

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*89 Trans Am GTA
*Moderator at www.transamgta.com

To hell with the GM vs Ford war. We must unite, as brothers to fight the plague that is overtaking the world...RICE

Tony

 

I run usually 93 octane, sometimes 94
(sunoco ultra super expencive good stuff)

I'm running 14 degrees base timing. No pinging or knocking.

-- Joe

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1989 Formula 350 4-bolt mains, Forged .030 TRW pistons, SLP 51010 Roller Cam, Comp-cams roller lifters, Summit 1.5 roller rockers, World Products Sportsman II
2.02/1.60 heads, Edelbrock TPI Intake, Cloyes Double Roller, timing chain, Mellings oil pump: 13.5 @ 100.23 MPH

Since close of track : Ported SLP runners, Ported Plenum, AFPR, Autometer 100lbs gauge, A/F ratio gauge.

http://www.joesperformance.com

-- Joe

 

I break the tan and black connector on the passenger side firewall. I set my ZZ4 timing at 10 BTDC or maybe a hair more. To advance the timing rotate the distributor counterclockwise, to retard - go the other way.

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88 IROCZ28
ZZ4, Big Mouth, Lg. runners and BBK 58mm TB. 700R4 w/ corvette shift servos, 3.23 Borg Warner & posi.
B&M 2400 Hole Shot and MegaShifter.

 

wow u get away with 14*? nice

 

Hey,

I'm running flat-top pistons and 72CC chamber heads. My compression ratio is only like 9.5:1. Most people running big motors are running like 10:1 or 11:1. I was planning on
running a blower at one point, so I didn't go
with the 64CC chambers.

-- Joe

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1989 Formula 350 4-bolt mains, Forged .030 TRW pistons, SLP 51010 Roller Cam, Comp-cams roller lifters,
Summit 1.5 roller rockers, World Products Sportsman II 2.02/1.60 heads, Edelbrock TPI Intake,
Cloyes Double Roller, timing chain, Mellings oil pump: 13.5 @ 100.23 MPH

Since close of track : Ported SLP runners, Ported Plenum, AFPR, Autometer 100lbs gauge, A/F ratio gauge.

http://www.joesperformance.com