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Old 06-30-2012, 08:28 AM   #57
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I have an '88 TravelMaster with a similar build: Chevy P30/G30 chassis and 350c.i. "M" series small block V-8 w/ original M4ME Quadrajet 4bbl. carb. At only 57k miles, it has run pretty well but she's a bit under-powered to tow anything heavier than a boat.

It's time to rebuild the leaky carb -- but I'd rather replace it than rebuild it. Any suggestions for a more "performance" tuned carb? I can't afford a new manifold right now. Any other suggestions for relatively low-cost (i.e.: cost effective) enhancements?? (I already have a low-restriction air intake/filter) THANKS!
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Old 06-30-2012, 09:39 AM   #58
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Elbebrock jegs and summit offer performance Q jet carbs at a reasonable cost not much more than a rebuilt they work pretty good from what i am told or a holley spread bore carb but now you will have to modify the fuel lines and linkage not hard but a pain good luck i rebuilt and modified my stock one a 1 " spacer under the carb helps to
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Old 07-09-2012, 09:40 PM   #59
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Hello,I'm new here and I have a 87,G-30.
It's a 350/t-400.Just turned 51,000 miles.
I like your engine build,and have a couple questions.
The hood-How does it help cooling?Seems it allows air to by-pass the radiator.Does it cool better by moving more/cooler air over the engine?
And the carb spacer-How does it improve performance?Just keeping heat off the carb?
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Thanks,Mike.
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Old 07-10-2012, 06:04 AM   #60
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The hood is more of a novelty it dose keep the dog house cooler and dosnt affect the rad the air dam under the bumper helps the cooling by about 10 deg. The carb spacer improves torque and throttle response It runs great any more questions please ask.

Bill
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Old 07-10-2012, 06:25 AM   #61
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Thumbs up

Thanks again for your suggestions, "85 Antique" --

I replaced my old carb with a rebuilt "performance" Q-jet and added a 1" phenolic 4-hole spacer. (for "100 Chevy's" question: see Summit Racing's discussion of carb spacers at: http://www.summitracing.com/expertad...uretor-Spacer/ ) 'Already had a home-made cold-air intake (cooler, denser air) made from a piece of 4" semi-rigid dryer-vent duct. I have no way of objectively measuring the performance increase but it runs great and "feels" like it has has a LOT more power & acceleration!

P.S.: I had a local custom muffler shop inexpensively add a balance pipe to my existing dual exhaust and instantly got a significant boost in manifold vacuum!
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Old 07-10-2012, 01:02 PM   #62
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I don't have dual ex i have 2 21/2 into a merge collector into a 3" rv muffler i noticed a difference over the stock 2" exhaust
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