Recent content by Collin

It’s unfortunate that some of these OEM reproduction looking parts that I was after just suck! They looked amazing but if they don’t work what’s the point

Update: Voltage regulator shorted against its cover, try #2 didn’t work right, new digital regulator holds a steady 13.5v Indian Head shellac has sealed that intake tight, no leaks, no pops Down to just tuning the carb and maybe adding some race gas to boost the octane

@mac Comp Cams XR280HR-10 installed at 0 degrees. Lift .541"/.537" Duration 280/288 Lobe Separation Angle: 110° RPM Range 2200-6000 Comp single springs and stock valves. Single groove valves. Comp adjustable rocker shaft.

@mac 10.1:1 static. The engine shop knew it was on the edge of pump gas but thought they could accomplish it with the work to the heads and intake.

@mac what do you think of the dynamic compression? pump gas or race fuel?

The style cup they went to didn’t accept the push rod ball end we had. Went with a new set with the recommended head we will see how that plays out.

Bob, Dropped push rods because my hydraulic lifters were bleeding down and getting stuck. Defect from Comp that others have reported as well.

I actually tried to use those the last time but due to the work to the heads and intakes the bolts wouldn’t fit

So just as Russ69Runner stated the engine shop does NOT want to mill the intake. They recommend Indian Head Shellac Sealant by Permatex. They stated that with the metal gasket will be perfect

9.16:1 dynamic compression ratio

We did that. Think it’s an issue when the intake was milled causing a poor mating surface. Going to take the intake to be milled again. Just in time for spring.... :up:

Looks like the valley pan did not seal well and that oil and air were being sucked in. Only about 500 miles on cam so a pic to show the wear. Going to measure the valves

Vacuum at idle is 12 Choke is staying open Yes engine at temp when problems occur Running Champion RJ12Y plugs Yes using vacuum advance coming from manifold Will have to calculate dynamic compression Primary circuit dialed in using an AFR gauge

Barrels 4 Booster Down Leg Brand Quick Fuel CFM 680 Choke Electric Circuit 2 Fuel System Carbureted High Speed Air Bleed 28 Idle Air Bleed Size 70 Material Aluminum Model SS-Series Primary Main Jet 68 Primary Power Valve 65 Primary Pump Nozzle Size 31 Product Type Carburetor Secondaries Vacuum...

Still having issues with my 383. Stock HP block, forged crank, diamond pistons on factory rods, comp cam hydraulic roller, ported 906 heads, cast intake, on my 3rd carb. Couldn't get the last dual feed double pumper from pro-systems to run right, so went to a QFT SS-680 dual feed, electric...