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Old 03-17-2006, 22:55   #1 (permalink)
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sluggish 302

Hi everyone i just bought a ZJ fairlane 302, gas, c10, borgwarner L.S.D, and below 30 k's it has nothing and above that it has little more. it feels like a 6 cylinder. just wondering if there is any thing i can do to get a bit of hustle about it im not chasing tyre frying power but mabye a few little tricks you guys might know to get a barbque fuel machine to keep up. :)
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Old 03-17-2006, 23:26   #2 (permalink)
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Re: sluggish 302

If it was me, i would just go some simple bolt ons you can use later when your fed up with the lack of go and get a 351. Things like inlet manifold, exhaust, up the rear end ratio if its a 2.77 or similar. If the ZJ has the 4 barrel thermoquad carb i would keep that cause on gas mine went worse with the holley. If your wanting a decent upgrade you would need to put in a bigger cam.
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Old 03-18-2006, 03:05   #3 (permalink)
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Re: sluggish 302

Check there is not a gas leak in the hose beteen the convertor and the intake. That will rob power if it is that type of system like I used to have. At least it feels like 6 cylinder. A 302 on gas in a Fairlane would I gather.
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Old 03-18-2006, 23:20   #4 (permalink)
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Re: sluggish 302

Quote:
Originally Posted by tuffxd
Hi everyone i just bought a ZJ fairlane 302, gas, c10, borgwarner L.S.D, and below 30 k's it has nothing and above that it has little more. it feels like a 6 cylinder. just wondering if there is any thing i can do to get a bit of hustle about it im not chasing tyre frying power but mabye a few little tricks you guys might know to get a barbque fuel machine to keep up. :)
I would start with the basics before spending heaps of $ on it.
New spark plugs (go one heat range colder than recommended - higher number on the plug = colder, so if the book says BP5FS, then use 6's )
New leads
New rotor
Check the distributor vacuum and mechanical advance - if the dizzy is points, fit new ones, but its probably electronic anyway.
If you have a spare $50, throw a new coil on it too.
set the base timing, on gas you could try around 14 degrees initial.

If it is still sluggish, then you might have other issues also, depending how old it is, look at the timing chain, or blocked muffler etc etc.
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Old 03-19-2006, 23:30   #5 (permalink)
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Re: sluggish 302

thanks guys i will most definatly give it a good tune up and a new exhaust even if it just make it sound better the bloody thing on it has 3 mufflers.
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