I just posted on corral too:
Hello all, this is my first time posting.
A buddy and I recently finished putting together a new motor, supercharger, and fuel system.
Prior to installing the supercharger, we were running the newly built 342 breaking it in, it ran nicely, and had a little 'surging' or hesitation basically throught the entire RPM range under any sort of acceleration, but it ran nicely otherwise.
Now we've installed a paxton novi 2000, and walbro 255lph intank, 255lph inline pumps. The car runs worse than a VW bus!!
The other mods installed are:
Holley 42lb injectors
BBK adj. fuel pressure regulator (vac on/ keyed but not started - 42psi)
Edelbrock 70mm TB
BBK 70mm EGR spacer
TFS upper/lower intake
c&l 80mm mass air tucked into the fenderwell due to lack of space.
MSD 8582 billet distributor, TFI blaster coil
Motorsport (?) 4017 cam
Probe racing 1.6 roller rockers
Probe racing PRS pistons
Probe racing ultralight rods
Probe racing 4340 forged stroker crank
I just replaced the EGR and IAC with brand new parts from Ford ($$)
I also replaced the anti-backfire valve, because the headers melted the old one (more $$ for ford)
Oh, and we also just replaced the pickup -> fuel filter fuel line because the exhaust melted/wore away a hole in it (more $$ for ford)
I've restabbed the dist. twice, dialed it in to 10 initially then busted the timing light through that 1/2" gap between the belts and timed it to 12 on the nose.
When I start the car, it idles fine, but vac seems low - 10-15hg, I can't even say what it does when I get on it because as soon as I press down at all on the accelerator it bogs, vac drops to almost 0, then dies. I can hear a 'thudding' sound from the engine occasionally when I give it a little gas.
My fp gauge seems to have stopped working, so I can't get a read on the fp anymore, but the adjustment hasn't been touched.
what is going on here???? i'm getting so frustrated. I was trying to get it just to run a little so I could take it to the tuner and dynotune it, but now it won't even go down the street.
Also, after I power off the car, I hear a 'bubbling' sound from around the driver side valve cover (maybe intake area), and a hissing sound, which goes away after about a minute, also from the same area. I've got denso IT22 plugs on the way, and a Pro-M 80mm mass air w/filter on the way as well, I've heard the c&ls aren't all that great. But there has to be something else wrong for it to run so ... ****ily
ideas? suggestions? flames? anything is most welcome
also we aren't running the FMU either
thanks in advance
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