Charles Brittain

Hello, I am super new to this forum and I am sure this has been discussed alot, but can't find any newer threads of people with similar conditions.
I just bought an 83 rx7 12A with a Holley 4 barrel carburetor,

465 CFM CLASSIC HOLLEY 1848-2R

Since I got her she boggs when you step on the gas, and again at 2500 to 3000 rpms in all gears. I have:
changed plugs
Changed distributor
Adjusted idle mixing with a vacuum meter
Checked fuel pressure (5-6 psi)
Swapped out secondary vacuum springs to both losser and stiffer.
Has anyone had luck tuning this to run smoothe? I hope someone can help me out, I am ready to find a stock setup and put that back in the car. Any info would be appreciated.
Quote

rxtasy3

iTrader: (2)

the cam on the throttle shaft that works the accelerator pump may be worn down, not allowing for enough fuel shot.

t_g_farrell

iTrader: (1)

Stock nikki and intakes work best.

jbherri2

iTrader: (1)

Maybe it's something even simpler - like the fuel filter?

crosen91

Seen a few posts on here that did turn out to be the problem for leaning out right around that 2-3k rpm range

bubba123

get a 48 ida weber carb and intake you can get them on racing beat and there are a few on ebay

Frogman

Always check your fuel filter, a clogged one will bog you out at higher rpm's,