1989 Ford F 150 Installed New 302 Engine Bought Craigslist Already Rebuilt

1989 FORD F-150
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I installed a new 302 engine (bought from craigslist) it was already rebuilt with a flat tappet cam. I went with carburetor and installed a GM distributor. It ran sluggish so I thought it was the holley carb. I installed a new shelf elderbrock and it still run sluggish. It also backfires through carb. I do not know the timing for the engine and this is driving me nuts. any help????????????????????
Mar 15, 2013 at 10:30 PM
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