I can't seem to get to this thing no matter how hard I try... I can read it at about 4 degrees ATDC...which is not good. Don't understand why it is running as good as it does with the timing that far off.


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Gunmetal 89GTA T-Tops L98
700R4 with 3.27 gears, street tires
Best 60 ft: 1.996
Best 1/8th mile: 9.02 @ 76.5mph with 60' time of 2.14
Mods: air filter, hypertech chip, 3" exhaust (no cat.)
Current Mods: 8.8wires, cap, rotor, +4 plugs, MAF screens, Servo, custom Ram Air, TPIS air foil, and some tuning

Going to the track this weekend...hopeful for improvements.

 

a distributor wrench ,made for what you're doing.

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ICON Motorsports

1st & 3rd

 

Yup, plunk down for a dist. wrench. And heres a tip from a guy who just set TPI timing for the first time theother day...take the vacuum lines off the EGR solenoid and the wrench will fit between theports so you have a real range to turn through.
...ed

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Ed Maher - Moderator @ The Carb Board
92 Z28 Convertible - Quasar blue / Tan top
LB9 4L60 GU2 G80 - stock, soon to be sleeper
-=ICON Motorsports=-

- Definitely prototypes, high powered mutants of some kind. Too weird to live, too cool to die

 

The distributor wrench sold at Sears is the best for these cars I think. It fits perfect. The size is 9/16 and costs like $9.

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'89 Formula 383 TPI

 

Spend the money for the dist. wrench. Also remove the two 10 mm or 3/8 bolts that hold the coil and the vac. switch to the bracket on the intake. Thats the simplest way, it takes an extra 2 min if that.

87 LB9 5spd 3:42 rear T/A flame red
every free
3 inch flowmaster / tes
ported intake
msd ign.
B&M ripper & centerforce

 

9/16 crowfoot with an extension works really good, too, without having to move any other lines or parts...

KAM

 

I found that the dist wrench interfered with the rear of the TPI lower intake manifold, but the 9/16 crow's foot was a perfect fit.

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89 IROC with lots o' stuff

-=ICON Motorsports=-

 

Yeah,the 9/16 crows foot with the extension is the way to go.Iv'e been using it for years.I bought a dist. wrench from sears but couldn't use it.
Don

 

there are two kinds of distributor renchs i buy, the ones from snap-on that cost 40 dollars each and fit the application they were made for. the other is the cheap universal wrench from sear that i heat with a torch and bend where i need to get it to fit. if you have a torch the second is way cheaper.

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ICON Motorsports

1st & 3rd

 

Get a dist wrench, get a cheap Chinese one from the local parts shop. They will normally interfre because the bottom length. I heated mine for 5 minutes with a propane torch and added another L bend about 1 inch from the opening. just another idea

 

Auto zone sells a universal one that fits my 350 TPI perfect. Cost is $4.50

 

The Auto Zone one that comes with the 9/16 and 1/2 works great.

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Livin the hot rod dream, one day at a time.
lg4
slp muffler
pro flow air cleaner
performer intake
more to come

 

In my 84 Firebird w/v6 I bought a distributor wrench, but it didn't fit. The 9/16 was too small. So I used a 15mm socket 1/4 inch drive with a swivel extension in it. That was the only thing I could get to work on it. But then again, every time someone says to use this certain size, it's always something different. My car is weird like that.