Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem

17085586 on a 396 with a bit of a cam....

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Cliff Ruggles:
Yep, "tight" LSA is still alive and well and "pushed" by the cam grinders and quite a few resident "experts" and "guru's" on the Forums.

Here's a good example of how that works.  Attached is a pic of overlapping dyno charts from a customer who though he had Q-jet issues.  The root issue was the piss-poor cam choice.  Idled like crap, stinky exhaust and not making chit for power on the dyno.

Instead of offering tuning advice I offered specs for the replacement cam.  They followed my directions and were nicely rewarded with much better idle quality and vacuum at idle, plus just a "wee" bit more power at every RPM......FWIW....

77cruiser:
My custom ground cam on 107 LSA does OK, gets 19 mpg on the road too.

77cruiser:
Tried to PM you back but it said your inbox was full.

Cliff Ruggles:
"My custom ground cam on 107 LSA does OK, gets 19 mpg on the road too."

Well, I stayed at a Holiday Inn Express last night and it was "OK".

Seriously, what are you suggesting here?  That the OP buy another 226/234 @ .050" cam and have it ground on a 107LSA with the ICL clear down at 103 to help with their issues?......

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