Carb swap, and all the adjustments with it.
I took off the Eddy carb on my 73 so I could rebuild it and I replaced it with a rebuilt (with a stock BG rebuild kit) 625 BG road demon. I am trying to fine tune this thing the best I can for daily driveability until I get the eddy back on.
It is a 76 360 block bored 40 over I used a Summit rebuild kit (page 118 of the new summit catalog) Sealed Power/ Fel-Pro kit with hypereutectic 8.66:1 pistons. The crank and rods were the stock 76 units, the heads were picked up at the Portland, OR swapmeet and were rebuilt later (nonmagnum) heads with 2.02s and real nice port job. ARP bolts and studs hold all the gutts togeather.
The cam is from Delta cams in Tacoma, WA www.deltacam.com and set at 4* advanced on the keyway.
Specs. INT EXH
Dur Deg@ .050 210 220
Valve Lift .429 .444
Ignition is a stock electric dist, MSD blaster 2 coil, and a chevy 4 pin HEI unit (don't give me crap, It's worked fine for 3 motors, I did it before that guy started selling the kits and I don't have to worry about my ballast going tits up. Hell Im also running a chevy alternator). Intake is a Eddy performer.
For the 4 corner screws the fronts are 3/4 of a turn out and the rears are 1/2 a turn out. Float lev. is 1/2 way up the sight glass.
At idle with the dist. vacume plugged and a vac. guage hooked up to constant vac at the carb baseplate.
Temp is 180* and at idle.
Cam is set at 4* advanced on the keyway. This pic is at idle. (center of the black line is 0*)
At idle.
Im also running into a clearance issue with the vacume advance on the dist and the rear of the intake.
When I hold it at 2000 RPM timming is at 31*
These carbs are a ***** to tune on a street car and I will admit I don't know that much about Holley type carbs. The main problems Im having right now is when I come to a stop it kinda sputters like Im getting some fuel slosh, can I just adjust the float lev a little higher? I know that too much is bad on these carbs.
Im not getting anymore blue or black smoke with these settings and it seems to run fine. After a good cleanning and a few high speed test runs down the freeway my plugs are right where they should be with no fouling but my exhaust smells more like gas than with the Eddy carb.
Anyone else having a clearance issue with the vacume advance on the dis. and the rear of the intake or am I stupid and have something adjusted wrong?
I took off the Eddy carb on my 73 so I could rebuild it and I replaced it with a rebuilt (with a stock BG rebuild kit) 625 BG road demon. I am trying to fine tune this thing the best I can for daily driveability until I get the eddy back on.
It is a 76 360 block bored 40 over I used a Summit rebuild kit (page 118 of the new summit catalog) Sealed Power/ Fel-Pro kit with hypereutectic 8.66:1 pistons. The crank and rods were the stock 76 units, the heads were picked up at the Portland, OR swapmeet and were rebuilt later (nonmagnum) heads with 2.02s and real nice port job. ARP bolts and studs hold all the gutts togeather.
The cam is from Delta cams in Tacoma, WA www.deltacam.com and set at 4* advanced on the keyway.
Specs. INT EXH
Dur Deg@ .050 210 220
Valve Lift .429 .444
Ignition is a stock electric dist, MSD blaster 2 coil, and a chevy 4 pin HEI unit (don't give me crap, It's worked fine for 3 motors, I did it before that guy started selling the kits and I don't have to worry about my ballast going tits up. Hell Im also running a chevy alternator). Intake is a Eddy performer.
For the 4 corner screws the fronts are 3/4 of a turn out and the rears are 1/2 a turn out. Float lev. is 1/2 way up the sight glass.
At idle with the dist. vacume plugged and a vac. guage hooked up to constant vac at the carb baseplate.
Temp is 180* and at idle.
Cam is set at 4* advanced on the keyway. This pic is at idle. (center of the black line is 0*)
At idle.
Im also running into a clearance issue with the vacume advance on the dist and the rear of the intake.
When I hold it at 2000 RPM timming is at 31*
These carbs are a ***** to tune on a street car and I will admit I don't know that much about Holley type carbs. The main problems Im having right now is when I come to a stop it kinda sputters like Im getting some fuel slosh, can I just adjust the float lev a little higher? I know that too much is bad on these carbs.
Im not getting anymore blue or black smoke with these settings and it seems to run fine. After a good cleanning and a few high speed test runs down the freeway my plugs are right where they should be with no fouling but my exhaust smells more like gas than with the Eddy carb.
Anyone else having a clearance issue with the vacume advance on the dis. and the rear of the intake or am I stupid and have something adjusted wrong?
