69 427/435
Melting Slicks
Joined: May 2009
Posts: 3,079
Likes: 314
2024 C3 of the Year Finalist - Unmodified
I switched to a Pertronix III Igniter, coil and 7mm wires stuffed inside my braided shields. Plugged into the 12v IGN at the fuse block and left the 9V resistor wire going into the box shield and sealed off. Never had to touch a thing since. The unit has an adjustable rev limiter too.
Melting Slicks
Joined: Jul 2004
Posts: 3,067
Likes: 219
Replaced the Ti box with a newer puck design
Check wire harness is good
Check all spark plug wires are not broken, we had to replace as it was broken and arching
Replace spark plugs with correct ones
Check the coil is working properly and has right voltage
Final check is the dist cap is working. We replaced it with a GM service replacement
Check fuel bowels are correct
Check timing
That is it
G
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Racer
Joined: Apr 2010
Posts: 271
Likes: 158
20+ years ago I had the same symptoms on my L78 and if memory serves it was distributor related. I had the distributor rebuilt by TI Specialties. I remember the distributor came back looking like a piece of artwork. Beautiful.
I highly recommend going through their TI troubleshooting guide versus just guessing with parts swapping.
I highly recommend going through their TI troubleshooting guide versus just guessing with parts swapping.
Drifting
Joined: Nov 2016
Posts: 1,957
Likes: 576
From: Pittsburgh PA
i had the exact same issue when my lectric limited amp box failed- not firing in the crank position. you can disconnect the R wire to the TI harness for a try. when i did that mine would start instantly.
as far as swapping in a points dizzy- you will also need the correct coil.
you can disconnect the TI harness where it connects to red wire at firewall, you need a resisitor there, that goes to your coil (R wire from starter hooks here too) dizzy wire to other side of coil. i think thats it? once you disconnect the TI harness it wont have any power in it you can just let the wires lay there
as far as swapping in a points dizzy- you will also need the correct coil.
you can disconnect the TI harness where it connects to red wire at firewall, you need a resisitor there, that goes to your coil (R wire from starter hooks here too) dizzy wire to other side of coil. i think thats it? once you disconnect the TI harness it wont have any power in it you can just let the wires lay there
Melting Slicks
Joined: Jan 2000
Posts: 3,326
Likes: 523
From: home
Verify a good ground at the radiator support for the module. Sounds like the wrong ignition coil (non GM t.i. coil). Mine did the same thing. Wrong coil, tried starting, fired up for a split second, then nothing. Wrong coil bricked my new aftermarket ignition module. Do not use any aftermarket coils, real GM only. The aftermarkets have a high failure rate. You need to ohm your coil and verify it is a t.i. coil, not a point coil.