Quote:
Originally Posted by JerzLT1
my point was that he made a custom cam that made good power lol. im sure that he is fully capable of specing a drag racing cam
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Wasn't putting you or Josh down! Just that Alex is running those numbers with a cam that wasn't really selected for 1/4 runs.
From the old Opti-swap page:
Vented Optispark Swap
Early (92-94) LT1 motors have a non-vented Optispark distributer. Given the climate under the water pump, some owners find it advantageous to upgrade a failed optispark for a later vented model. Given the number of design changes in the six years of LT1 production, this is a non-trivial swap.
To swap, the later distributor, vacuum harness, distributor harness, and timing cover must be used. A camshaft with a longer dowel pin and a hole in the center is required, along with a modified cam gear or 95 or later timing set or the LT4 or LT4 extreme duty timing set. The best time to do this is when you're doing a rebuild or cam swap anyways, because you will be removing and reinstalling a cam for this job.
The rest of this page shows the parts list and compares all the parts swapped during this job. I didn't bother to disect the Optispark, because Mike Chaney already has a good Optispark Disection Page
Part Part Number
95 GM Optispark 1104032
95 Opti elec harness 12130319
Opti vacuum harness 12555323
Opti vacuum fitting 14082470
95 Timing cover (incl all 3 seals) 12552426
GM timing cover gasket 10128293
95 Cam Timing Gear* 10206039
Stock replacement timing chain* 10128485
Intake Manifold Gaskets 12524653
Water Pump Gaskets (2 required) 10128343
*Stock replacement parts. You may want to upgrade to the 8mm single roller LT4 set or the extreme duty set (12370835).