Classic over carburetion problem?
Hi everybody:
Now that I have over 300 miles on this 340 I'm getting to feel that there might be a problem like I thought. I got my friend to drive it also and he thinks the same thing. It should go WAY better than it does especially in the burn out awards. It hardly breaks the wheels lose :(
1970 340
Ground and drilled rods
Speed pro forged pistons
ported 2.02 J heads
Comp Cam 488/491
750 Holley vacuum secondaries
Edelbrock Airgap intake
Doug’s Ceramic Headers
Super 44 Flow Masters
Exhaust 2 1/2"
727 with 2200 –2400 converter
8 3/4 Dif with 3.55 Eaton trutrac
HP haven't a clue
I read this whole thread. I was gonna say something as soon as I saw 488/491, and 2200/2400.
But I forced myself to read to the end.
No one asked what your cylinder pressure is ,
nor at what altitude you are at.
These are key pieces of information, along with the Ica of your cam.
I'll bet you are at 1000 ft or more.
I'll bet your cylinder pressure is less than 130 psi
I'll be your Ica is greater than 64*
And I'll bet that thing is a dog below 3000 rpm.
Now, cough up the numbers so we can develop a cure and not just bandaid the crap out of it.
If you don't know the Ica of your cam, cough up what you do know.
And cough up the part number of your pistons or give us the measured deck height and whether or not it has eyebrows. And finally, have the heasd been milled and if yes, cough up the measured head-volume.
lol
