Hi all , I was wondering if anybody can make some set up recomendations on this combo i am trying to get running right this is what i have :
440 block .030
ross pistons 17.5cc dish flattop with valve cutouts
4.15 hemi crank
6.90 inch rods
.000 deck height
Indy sr 75 cc chambers bowl ported and gasket matched .
works out to true 10.5 to 1 compresion
harland sharp rockers 1.5
smith bros push rods 9.350in
solid roller comp cam with 256in 260ex@.50 w/630 lift .
Mopar M1 single plane intake
Deamon 850 anular carb mighty deamon
mallory hyfire VI with all maching ignition parts
mallory comp ss mechanical distributor .
4 speed 3800 pound b body with 4:10 gear .
have been trying to get running right but still performace is marginal seams to rattle (ping)on pump gas at high rpm .
i have timming set at 19base 16advance =35total
all in by 2500
carb has box stock setup except for 35thou squirter on primary side
idle vacuum is about 8 1/2 to 9 1/2
should i increase jet size or change advance curve ?
what i mean is quicken the advance curve to all in by 2000 and limit to 34total or richen the carb up ?
I am not sure what way to go i have a lm2 on the car and at idle a/f ratio is 12.3
and at wide open throtle it gos to 13.5 @ 5000 rpm in 4th gear. this is what i sean last night with a air temp of 35deg and engine temp of 165deg . help
where should i go ? thanks in advance guys !