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2,02 intake and a little bowl blending and the next size up cam will do it with room to spare

Potomac speedway md, 3/8 heavy bank hagerstown MD 1/2 mile little bank

If you are running a stock oil pan don't turn it over 5500 rpms or it will blow up the high bank tracks will kill a mopar engine quick because the oil pan sucks for this type of racing, windage tray is a must have also don't use a high volume oil pump .thats why you don't need a big cam because...

Yes high bank 3/8mile 4 ten years I also built engines for other cars , the blue and the orange ones

I never ran a cam with more then 274/274 or 228/230 @50/108lc had plenty of torque coming out of turn, and in drive /3 gear you will need a 4.56 gear on a 3/8 high bank track or maybe a 3.91 in second gear remember the race is to the flag not the end of the track, cam for torque not hp the carb...

is that 3gear in a 4speed ?I ran 2 gear in a 833od unit with a 1.67 second gear and 4.30 gear came in around 6200 rpm on the same 3\8 high bank track dirt ,the GM carb works well find one with the 1 3\8 venturi

It looks like the cam might be too big lowering your compression how does it feel at higher rpms does it pull strong? Also is your trans shifting too quick and not down shifting into lower gears?

Was it right and now has a problem. Also see if dist loose and turned

i raced in the same class and never had a failure with the gm system but the Chrysler system needs extra wires and ballast resistor , and i had coil failure several times with oil cooled coils most people dont under stand a dirt track is like off road racing lotts of bumps that shake everything...

Check carb base plate gasket, re tighten Intake gasket

I installed flat top pistons to raise my compression on a 360 /after getting everything together and installed they were .060 farther down the hole then stock dished ones ,they were 0.120 down. they were adv, to raise compression but they lied/so flat top pistons doesn't mean anything . but...

have you unhooked the fan belt and run it with everything unhooked on the front of engine? fan blade out of balance/ bent blade?

spray some water on the coil or watch it at night sometimes they crack between the tower and the neg side post causing intermittence idle problems.

if your going to pull a wire off you should bring the idle speed up to 1200 rpm and with a tach hooked up that cylinder should droop 50 rpm ,some times it hard to hear /feel and if one should smooth out the vibration there a problem with a intake valve on the shared runners

water looks normal in engine for cooler temps did you adjust the valves too tight? has it had many miles of reg. unleaded fuel thru it causing sinking exhaust valves? are the two cylinders not firing on the same intake runners (vacuum leak) intake valve not sealing tight from carbon build up on...

could there be a crankshaft to converter mismatch?

sounds like the choke is not opening all the way or sticking

I have a 92 suburban with a flat hyd cam ,with everything stock and 250000 miles and the only thing I changed was the timing gears ,I've only used the cheapest oils I could find but did change it every 3000 miles. 10w30. I drive this truck everyday ,unless your using high spring pressures on...

falling out of the air stream ,my 1985 suburban 350 would Ice the throttle plates on a 40deg or below day with high humidity with a, heated intake, exhaust heat riser ,the only fix was to put the flex tube back on between the air filter and exhaust manifold and running a 195deg t-stat. I...

Why did you jet the carb down? the carb is set to run in cold also it must be rich for the heaver cold air, all carbs run rich in the summer unless you lean it ,it never was a perfect system the over fuel in the summer would break down the oil, wash the rings down this is why 100000 mile was...

you can vacuum test the power valve ,and run a small wire through the little jets inside the metering block for the fuel enrichment stage.(I use a cutting tip cleaner set or pin type drill bits)then blow out with air.

if you leaned the jets down, and drive it in cold weather it will likely pop through .and your right about the fuel,10% alcohol in my area will lean the carb out also, but like Moper said you likely took out the power valve unless it is protected.