I'm having some driving issues with my blazer. The plugs get fouled all the time and it uses way too much gas. I think I have it tuned but apparently not. It idles very nicely with just a hint of lope with 20"hg vacuum. The exhaust only has a hint of gas smell at idle. At WOT I think it runs lean, because the paint is peeling off the headers, but I don't have much time at the track to T&T. I've only gotten 30 miles out of these NGK V-power plugs and used over 30 gallons of gas. I parked it after a cruise night where I idled around town most of the night and now I can't get it to start again even after cleaning these plugs.

Here are my specs...

'90 S-10 2dr 2wd Blazer
probably 3600# race weight

'97 L29 454 big block 9:1CR
cleaned up stock heads
ZZ502 roller cam 224/234@.050 .527/.544 lift
RPM Air Gap intake
3310 750 vac sec carb w/proform mainbody
1 3/4" long tube headers
3" exhaust thru Dynomax Ultraflows
alternator,waterpump,powersteering

TH350 with shift kit and a few other tricks
Hughes GM25 converter supposed to stall around 2800-3000 behind the BBC
ProStick shifter

Currie 9+ rear curently has 3.25 gears
leaf springs and lakewood slapper bars

5 psi fuel pressure with a Holley blue pump
BG fuel filter
Aeromotive regulator
-10AN line from the cell to the regulator then -8 to the carb.

Here are my questions...

1. What do I use to clean the plugs so I can reuse them? I tried a few things but the carbon is on there good.

2. I only know the basics about carb tuning. Do you think I need to do anything with the idle feed restrictors etc...?

3. Would some dyno tuning with a A/F meter help?

4. Does the Proform main body screw up the stock jetting on the Holley this much?

5. Would converting to a secondary metering block help me out with tuning?

Anyone out there want to help me?