General Category > Quadrajet Carb Talk and Tips

Airfilter restriction cure

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Cliff Ruggles:
While I'm on a roll here the WORST places to spend money in this hobby to improve engine power and vehicle performance are intake manifolds, carb spacers, fancy air filters, bug zapping ignition systems, and roller rocker arms.......

ks_skyhawk:
Cliff,  When you mentioned GM HEI modules, does the "990" you quoted in this thread refer to the last 3 digits of this GM part number?  GM 1875990.  Is this the module?

novadude:

--- Quote from: Cliff Ruggles on September 07, 2023, 10:47:34 AM ---Not a fan of Pertronix.  There parts have caused me a LOT of grief over the years with customers calling up here with "carb issues" that were related to those parts instead.

+2 on Blue Streak points and 990 factory modules.  I will only use 990 modules in my HEI's, and to date have never had a single issue with one.



--- End quote ---

This ^^^ !!!

I have had terrible luck with Pertronix point conversion kits.  Unreliable junk.

Standard Ignition Blue Streak still makes quality points, and the electronics in the newer HEI modules seem to be much different than the old '990' that always seems to work best!

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