396/375 hp/motor issues

[Ed Wright]

Originally Posted by Adger Smith

Most of the cams goig flat I've seen do change the lash because the lifter always gets shorter. Put the vac gauge back in the tool box and use it to tune a car with a stock cam. You might need a smaller idle air bleed or check it for Vac leaks if it is lean at idle. If you have a PCV hooked to it like it was a stock car get rid of it or get one that is designed for low vac. Get an O2 sensor on it with some Data logging if you can't figure it out.

There ya go.

[njk53]

Make sure your headers are not leaking. We picked up a miss with an engine fresh off of the dyno and it turned out to be a leaky header gasket.

[Billy Nees]

Originally Posted by Adger Smith

You might need a smaller idle air bleed or check it for Vac leaks if it is lean at idle.

Not to oversimplify things but do you have a plugged idle air bleed?

[christopher teed]

well I bumped motor over to TDC to remove the distributor before i went to work..noticed when removed the cap that the rotor is actually pointed between number 1 and 8 on distributor cap .swore i placed it dead on when installed..possible ,could this have been the problem?

[christopher teed]

well,changed distributor .it is a stock gm distributor with a curve kit and a pertronix ignitor ll.it was in another 396 car and runs just fine...it basically ran the same.installed new cap and plug wires.still the same ....will try eliminating the msd 6a box and see if that is the issues..getting out my AFR and see if the car is that far out of tune,u wouldnt think so ,it the car was dynoed tuned..stumped on this one

[Mike Taylor 3601]

Only way rotor would be pointing directly at #1 is if timing was on 0 degrees,you can set timing close as example you run 36 degrees line pointer up w/36 drop dist in line up w/# 1 on rotor &cap if dist. has advance twist rotor where it advanced and twist dist to line up w rotor,in case you don't know put mark on dist below cap where it's center of #1 electrode on cap.

I say you are going to find problem w/ ign, box
Mike Taylor 3601