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View Full Version : Kick me!!



jeremiahkellam
02-26-2009, 02:39 PM
Kick me in the nuts for buying a 5.0 SN95!!

I'm sure most of you are familiar with my previous engine problems. Update:
installed set of 80,000 gt40 heads (thanks Matt) with new springs, and had them cleaned up good.
New timing chain, new balancer, had a local shop do the work and tune it.

Went to dyno today, first pull was good, no problems 250/280. With engine still running, went for 2nd pull and the engine started cutting out and back firing as soon as we got on the gas and barely put out 160hp. Killed the engine, checked under hood to make sure nothing had come loose, looked good.

Started it back up, and it did another good pull, almost indentical numbers as first pull, waited 30 seconds, went for another run, and it did the same damn thing again.

On the dyno graph, the good pull showed a/f at 15:1, the bad run it shows 20:1. one guy watched the fuel pressure on the second set of runs, and it was steady at 35psi.

The guy that did the head and tuning work for me tried to say the 19lb injectors are starving, BULLSHIT at 250 rwhp!!

Any ideas??