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Old 01-23-2014, 01:29 PM   #33
99-LS1-SS
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Join Date: Mar 2011
Location: Oak Ridge NC
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Re: GM Performance 350/290 motor question

Quote:
Originally Posted by storm9c1 View Post
Keep in mind there are two styles of adjustable canisters. On the MSD StreetFire (cheapo), for example, some came with adjustable vacuum advance, some didn't (and the documentation changed along the way too). Some came with stop plates instead. What brand is your distributor?

If you are lucky enough to have an adjustable canister, then you have to see what style it is. One style adjusts the "rate" of pull depending on vacuum level. The other style adjusts the "limit" of pull. If you have the former, then you may still need a stop plate.

So make sure you check yours carefully.
Can you elaborate a little more on the part that I bolded?

I'm thinking I probably have the cheaper version. I'll go check to make sure.
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