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Old Aug 3, 2007 | 01:01 AM
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was looking under hood tonite and noticed that there was a manufacture gap spec of 45 for the gap but over that there was another sticker that read 35 for gap i went with the 35 is this ok....it a 85..
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Old Aug 3, 2007 | 01:13 AM
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.035 is the stock gap on your 85.
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Old Aug 3, 2007 | 01:15 AM
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forgot to say also put a accel super coil on should i stay at 35
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Old Aug 3, 2007 | 01:43 AM
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The standard gap for the 85 is 35. But with the HEI distributor and even a standard coil, you can run 45 without problems. I am at 45 with no problems at all.
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Old Aug 3, 2007 | 09:13 AM
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Originally Posted by vettlag
was looking under hood tonite and noticed that there was a manufacture gap spec of 45 for the gap but over that there was another sticker that read 35 for gap i went with the 35 is this ok....it a 85..
There was a reason for this change as it was a technical service Bulletin Number: 85-93 that caused it. Your car was originally equiped with a high output hei coil and module which was found to overheat and fail. This was replaced with a standard hei module and coil and thus the gap was reduced due to this. The dealer that performed this tsb was supposed to install a revised emission label. It appears they just stuck the new label over your old one.
Here is the tsb

TO: ALL CHEVROLET DEALERS

Some 1985 Camaro, Monte Carlo and Corvettes with high output ignition coils may exhibit driveability problems ranging from hesitations, sags, and stumbles to complete ignition cut-out. These conditions my be caused by extended exposure to high temperatures.

Should any vehicle/engine combination stated above experience the described driveability conditions and normal service procedures (See Service Manual) do not correct the conditions, the following steps are to be taken to prevent future reoccurrence:

Replace the high output coil and distributor module with standard output coil and module as listed below: Model Year Vehicle Model Engine RPO Replacement Coil Replacement Module
1985 Camaro, Monte Carlo L69 1985473 1976908
1985 Camaro LB9 1985473 1976908
1985 Corvette L98 1985474 1976908

Remove and regap spark plugs to .035 inch.
Check and reset ignition timing to specifications as indicated on the vehicle emissions label.

FOR 1985 ONLY """"this is the new emissions label part numbers""""

Usage Replace With
Camaro With L69 and NA5 14086583
Camaro With L69 and NB2 14086585
Camaro With LB9 and NA5 14086587
Camaro With LB9 and NB2 14086589
Monte Carlo with L69 and NA5 14086584
Monte Carlo with L69 and NB2 14086586
Corvette with L98 and NA5 Less NN5 14086591
Corvette with L98 and NA5 With NN5 14086592
Corvette with L98 and NM8 14086593

Last edited by milsurpman; Aug 3, 2007 at 09:16 AM.
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