Just wondering if the GMPP version was any type of upgrade vs OE replacement.
http://store.summitracing.com/partdetail.a...94925143+400129
Steve
Full Version: LT1 OptiSpark, '95 TA
Anyone?
QUOTE (steve-d @ Apr 24 2007, 05:28 PM) 
Anyone?
I just put on the 96 version... looks identical to me.
I got Ten bucks that says there is no difference whatsoever, but no proof.
Bock
I thought the later ones were vented.
QUOTE (KeithO @ Apr 25 2007, 05:02 AM)
I thought the later ones were vented.
Yes they are. They changed the drive mechanism where it mounts to the cam as well but I forget if the 95 has the newer drive with venting or the older version. You absolutely need to make sure to get the correct one.
In case all our current batch of opti changers are reading this thread, there is also a special seal in the timing cover that you will need to get from the dealer. You might be able to get away with reusing the old one, but its risky.
Most dealers don't keep the seal in stock so check ahead. By the way, if the Chevy dealer doesnt have it, or if they tell you $13 bucks and it must be ordered (like my Chevy dealer did), try the Pontiac or the Cadillac dealer. Should be 8 bucks.
Bock
QUOTE (cccbock @ Apr 25 2007, 05:27 AM)
In case all our current batch of opti changers are reading this thread, there is also a special seal in the timing cover that you will need to get from the dealer.
You wouldn't happen to know the part number for this would you?
Also, the Optisparks are grouped by model year for f-bodies as follows: 93-94 and 95-97 so I assume that this is the "breakpoint" for the differences.
QUOTE (KeithO @ Apr 25 2007, 08:12 AM)
QUOTE (cccbock @ Apr 25 2007, 05:27 AM)
In case all our current batch of opti changers are reading this thread, there is also a special seal in the timing cover that you will need to get from the dealer.
You wouldn't happen to know the part number for this would you?
Also, the Optisparks are grouped by model year for f-bodies as follows: 93-94 and 95-97 so I assume that this is the "breakpoint" for the differences.
DISTRIBUTOR DRIVE SHAFT SEAL
93/94 10128317
95-97 12552428
Good Luck!
Bock
QUOTE (cccbock @ Apr 25 2007, 02:07 PM)
QUOTE (KeithO @ Apr 25 2007, 08:12 AM)
QUOTE (cccbock @ Apr 25 2007, 05:27 AM)
In case all our current batch of opti changers are reading this thread, there is also a special seal in the timing cover that you will need to get from the dealer.
You wouldn't happen to know the part number for this would you?
Also, the Optisparks are grouped by model year for f-bodies as follows: 93-94 and 95-97 so I assume that this is the "breakpoint" for the differences.
DISTRIBUTOR DRIVE SHAFT SEAL
93/94 10128317
95-97 12552428
Good Luck!
Bock
Thanks, Bock.
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