The car will completly fall on its face when it his over 5k rpms. Kinda a putter then it falls on its face. I have had this happen both times I've gotten that high. First time was at 95+% throttle, second time was at 10% throttle.

I really dont think the opti can be the cause since I have the Delteq Opti-less igntion.

I really dont think it could be fuel pump or injectors since it does it under low throttle and high throttle conditions alike.

I dont think it can be the coils or the wires since they are both new.

Only thing I can think of is alternator/battery. When I first turn the key on its like around 10 volts, then when I start it, it goes to a little past 13 volts. This is on the factory gauge. When I turn it off the battery immediatly goes back to 10 volts.

Anyone know what this could possibly be?

Thanks,
James

BTW, here is my current setup:

CC306, Crane dual coil springs (good to .730 lift), Comp hardware, Comp ProMags NSA 7/16th, adjustable guide plates, hardend pushrods, comp r lifters, cloyes double roller, delteq, csi pump, jet hot long tubes, ngk tr55 pluges, most all parts are basically new.

the motor is brand new with less then 100 miles. rockers were set while motor was running, i shut them up, screwed down the lock, then tightened as much as i could from that point 1/16th to 1/8th turn.

 

Del-teq only cuts out the Spark part from your Optispark, not the OPTI (optical) part.

 

How did you set your valve lash? I hope on those R lifters, that you didn't go anymore than like a 1/16th of a turn. Might could be the valve lash.

 

Does your volt guage drop when you are applying throttle? Have the same problem you are describing. At 1st it only showed it's head under part load anything under 2K. Wks later it no longer did that but instead cut out in the area you are describing in the upper rpm.....when looking at the volt guage it would dip in unison with applying throttle. Once off the throttle it would read it's normal voltage. That's lead me to believe it's the alternator. Got a spare one but haven't had a chance to swap them out and take it for a spin yet. Hope this helps and your problems is a simple as a new alternator.

 

try autolite racing 473 plugs it should fix i did a million things and the last thing i did was plugs and it fixed it

 

Optis are notorious for the 5.2k RPM miss.

 

Been playing with valve lash more than I really want to lately. The comp R's are real fickle regarding last over 6000 rpm. They won't cause it to cut out, just not make as much as possible.

FYI........ I also have a Delteg and the only reason for putting it on was to see if it would pick up power on the top end...... Nada, not a bit. So far anyway.

Hope you find the issue.