carb change

[earthmover]

what to try my buddies carb from some of you guys replies that i may be over carb. and want to ask if you thought this carb would work out or not...its a( older BG 750) that has some work done to it. right now i have the hp 950 on my car.... heres the specs of the motor..
30" 340 ( bout 11.1)
head flow 240/140@500
com cam xs282s solid cam 520/540 with 1.5 roller rockers
36 degrees locked out dist. with auto lite 63 gap at 40 msd6al
x-cal intake port matched 1" spacer with hp950 82fr 4.5pv/88bk no pv
stock stroke / milodon deep pan
727 rev patt. 9.5 verta 5000
8 3/4 4.57 gears
27/10.5 qtp and 8 gal fuel cell
90/10 shocks fr/mp long drag shocks back
02/03 ss springs no clamps on back frame conn.
1970 duster
1.67 60' 7.54 et 89. mph

 

[bOb shingler]

i'm thinking the 750 should make a huge difference. a 950 just seems a tad large for your combination.

 

[earthmover]

thanks bob i plan to try it out i hope that it does,im looking for a little more out ofthis if i can get it .....

 

[EL5DEMON340]

your setup is almost like mine, i have a +.030 360 with a torquer II and a 750 race holley with the choke milled off. i bet the 950 will be quicker.

 

[earthmover]

any track time on that 360 El5demond340

 

[1968FormulaS340]

Im running a non-stroked 340 with a more aggressive solid roller cam. I use a Holley 800dp, back in the day my 1/8th mile times were in the 7.20s.



The 950 may be a bit on the large side.

 

[stroked 340]

How about a happy medium go with a 850..i run a Quickfuel 850 on my 416 going low 1.40's in the 60' and 6.90's in the 1/8th..on my 360 it turns low 1.60's and 7.50 in the 1/8th..

 

[ocdart]

30+ years ago I was running a very stout, solid lifter cammed 340 in a '69 Dart. My Holley 750dp couldn't keep it fed at full throttle. Went to a 850dp and it was happy as could be.
Sorry, don't remember all the specifics from back then.

 

[onebadstepside]

My truck pulls harder on top end with the 950hp than it does with the 750.

360
ported eddies
comp xs274s
kb107
air gap

 

[crackedback]

Look at the venturi size of the 950 vs the 750, they are the same. The throttle plates make the difference from the 750 with 1 11/16 vs 950 with 1 3/4.

The 950 will be as responsive as the 750 and has the potential to allow more volume up top.

The fuel curve on the 950 is way better too...

 

[onebadstepside]

Are the main bodys the same?Could you just change the base plate?

 

[earthmover]

so are most saying stay with the 950 and tune it????i have a vac. gauge someone exp. to how to hook it up and what to look for, this should help me tune the carb right....

 

[Stormy69]

keep the 950....