about 750 edelbrock

[66monaco]

will 750 eddy work with mopar 292 cam...? idle vacuum is little poor, about 4 inhg...now it has worn out 800 holley, and i have one 750 eddy in garage other specs are: 383 030 over, 10.5 pistons, modified 906 heads, bigger valves etc., eddy rpm intake, hooker headers, 2,5 exhaust.... or should i go smaller cam too?  now it has went 13.2 1/4 mile, according to previous owner hoping to go mid 12s sometime
thanks!

[oldschool]

that is a BIG camshaft for a street drivin 383!      what gears,trans,other mods.....?

[66monaco]

yes I know! but it sure does rew! now it has : 3.91 gears, sure grip., 727, cheetah manual valve , 3100 stall, i'm planning to chance gears to about 3.55....I want it to be street and little highway driven....but allso GO!!!

[Ghoste]

Not really an answer to your question but I had a 750 Eddy on a 383 with the Mopar 284 cam.  It worked well, the Holley of course offers more tunability but I liked the AFB style carb on there a lot.  Simple and easy.

[Harlow]

I had a 750 edelbrock on my old 383 and it had a 292 dur. cam. It worked fine. The previous owners really botched the build and crammed way too big a cam in there. It seemed like a decent carb. Pretty simple and easy to get a quick basic tune.

[66monaco]

cool, hhmmm maybe I should keep the cam and just change the carb... 800 is too big for it. I'm planning to go to wheel dyno to adjust and tune it after the carb change..
have you guys used somekinda vacuum reservoir with big cams, so power brake will work all the time? or some kinda electric vacuum pump ?? can you suggest me some?

[Harlow]

With my car I wish I had followed the advice from firefighter and others and just changed the cam instead to trying to work around it. It would have saved me time and money in the long run. For only having stock dual exhaust my car sure did sound pretty good though....

[66monaco]

With my car I wish I had followed the advice from firefighter and others and just changed the cam instead to trying to work around it. It would have saved me time and money in the long run. For only having stock dual exhaust my car sure did sound pretty good though....

WOW! cool!!!!

[firefighter3931]

will 750 eddy work with mopar 292 cam...? idle vacuum is little poor, about 4 inhg...now it has worn out 800 holley, and i have one 750 eddy in garage other specs are: 383 030 over, 10.5 pistons, modified 906 heads, bigger valves etc., eddy rpm intake, hooker headers, 2,5 exhaust.... or should i go smaller cam too?  now it has went 13.2 1/4 mile, according to previous owner hoping to go mid 12s sometime
thanks!

That combo is going to be difficult to tune. The eddy carbs are designed for engine builds producing a strong vaccum signal. Your best bet would be an HP style 4150 Holley carb with an agressive fuel curve and sensative boosters. 

Or, you could swap in a cam that is more appropriate for the build. 



Ron

[66monaco]

will 750 eddy work with mopar 292 cam...? idle vacuum is little poor, about 4 inhg...now it has worn out 800 holley, and i have one 750 eddy in garage other specs are: 383 030 over, 10.5 pistons, modified 906 heads, bigger valves etc., eddy rpm intake, hooker headers, 2,5 exhaust.... or should i go smaller cam too?  now it has went 13.2 1/4 mile, according to previous owner hoping to go mid 12s sometime
thanks!

That combo is going to be difficult to tune. The eddy carbs are designed for engine builds producing a strong vaccum signal. Your best bet would be an HP style 4150 Holley carb with an agressive fuel curve and sensative boosters. 

Or, you could swap in a cam that is more appropriate for the build. 



Ron

ok, thanks now I have to think a little the way to go and what would be better, 650 or 750? and mech or vacuum...?if I keep 292 cam... and if I put new cam, any suggestion ??

[firefighter3931]

will 750 eddy work with mopar 292 cam...? idle vacuum is little poor, about 4 inhg...now it has worn out 800 holley, and i have one 750 eddy in garage other specs are: 383 030 over, 10.5 pistons, modified 906 heads, bigger valves etc., eddy rpm intake, hooker headers, 2,5 exhaust.... or should i go smaller cam too?  now it has went 13.2 1/4 mile, according to previous owner hoping to go mid 12s sometime
thanks!

That combo is going to be difficult to tune. The eddy carbs are designed for engine builds producing a strong vaccum signal. Your best bet would be an HP style 4150 Holley carb with an agressive fuel curve and sensative boosters. 

Or, you could swap in a cam that is more appropriate for the build. 



Ron

ok, thanks now I have to think a little the way to go and what would be better, 650 or 750? and mech or vacuum...?if I keep 292 cam... and if I put new cam, any suggestion ??

If you absolutely have to keep that cam i would look at the Profrom 750 race series double pumper carb. 

If you wanted to swap the cam an engle k56 would be my choice. It will idle better, be easier to tune and make waaaaay more bottom end power. Torque rules  on the street. 



Ron

[66monaco]

will 750 eddy work with mopar 292 cam...? idle vacuum is little poor, about 4 inhg...now it has worn out 800 holley, and i have one 750 eddy in garage other specs are: 383 030 over, 10.5 pistons, modified 906 heads, bigger valves etc., eddy rpm intake, hooker headers, 2,5 exhaust.... or should i go smaller cam too?  now it has went 13.2 1/4 mile, according to previous owner hoping to go mid 12s sometime
thanks!

That combo is going to be difficult to tune. The eddy carbs are designed for engine builds producing a strong vaccum signal. Your best bet would be an HP style 4150 Holley carb with an agressive fuel curve and sensative boosters. 

Or, you could swap in a cam that is more appropriate for the build. 



Ron

ok, thanks now I have to think a little the way to go and what would be better, 650 or 750? and mech or vacuum...?if I keep 292 cam... and if I put new cam, any suggestion ??

If you absolutely have to keep that cam i would look at the Profrom 750 race series double pumper carb. 

If you wanted to swap the cam an engle k56 would be my choice. It will idle better, be easier to tune and make waaaaay more bottom end power. Torque rules  on the street. 



Ron

ok, thanks again something to do for winter

[66monaco]

ou and question about my torque converter I now have 3100 stall turbo action and 742 case 3.91 gears... I planning to change gears to 3.55....and if I change that cam too, ain't that to much stall? I don't want to change converter yet...

[Ghoste]

Depends on your final goal.  Stall is partly a function of torque so changing a cam can leave the torque converter happy with either stick.  The tc is more flexible to change than the camshaft (to a point).

[gordo1968charger]

listen to ron, HE KNOWS!

[66monaco]

ok, I wil

[66monaco]

hi, I have hard time to get hold of anyone at Engle camshafts! Ron, what else cam would you suggess??
thanks!

[firefighter3931]

hi, I have hard time to get hold of anyone at Engle camshafts! Ron, what else cam would you suggess??
thanks!

Here is a good cam that will work fine with your existing parts :

http://store.summitracing.com/partdetail.asp?part=LUN%2D60303LK&autoview=sku

You will need a 3 bolt timing set with the VooDoo bumpstick :

http://store.summitracing.com/partdetail.asp?part=CCA%2D2109&autoview=sku



Ron

[66monaco]

ok thanks! that seems ok! what do you guys think about crane cams? good ones?

[66monaco]

one question about carbs ...you have suggess a proform 750.... what about speed demon 750 mech....? yes, I have heard that they have to be cleaned before using...? but are there any significant difference? I like demons looks 

[firefighter3931]

one question about carbs ...you have suggess a proform 750.... what about speed demon 750 mech....? yes, I have heard that they have to be cleaned before using...? but are there any significant difference? I like demons looks 

I haven't had good luck with Demon carbs. The main difference is the fuel curve which tends to be too conservative on the Demons. On a very mild engine combo it might be Ok and it might not....you'll have to try it and see for yourself. 



Ron

[66monaco]

hhhmmm mayby I'll trust you on that proform...both of thm are quite expencive to buy...so.. i just pulled the plugs out first time...allmost all of them was wet...! plugwires are ok, they are 300+.... could it be 'cause of the big cam...valves same time open much..? or the carb has just too big jets...?

[66monaco]

oh, and previous owner told me that theres stiffest single valvesrings from mopar, p5249848....and he said If i'm changing cam, look for roller cam, therefor I don't have to change normal valvespring during cam in running...with roller quess there no danger breaking to cam during cam break in.. so many choices to make.. heads are 906, with bigger valves 2.14 intake, exhaust, i dunno...and they are ported to flow +500hp...

[firefighter3931]

hhhmmm mayby I'll trust you on that proform...both of thm are quite expencive to buy...so.. i just pulled the plugs out first time...allmost all of them was wet...! plugwires are ok, they are 300+.... could it be 'cause of the big cam...valves same time open much..? or the carb has just too big jets...?

There could be several reasons for the wet plugs but yes.....large cams with lots of overlap can contribute to the problem. I was assuming that you allready had a speed demon on the shelf. If that is not the case buy the Proform and be done with it. 


Ron

[firefighter3931]

oh, and previous owner told me that theres stiffest single valvesrings from mopar, p5249848....and he said If i'm changing cam, look for roller cam, therefor I don't have to change normal valvespring during cam in running...with roller quess there no danger breaking to cam during cam break in.. so many choices to make.. heads are 906, with bigger valves 2.14 intake, exhaust, i dunno...and they are ported to flow +500hp...

Those springs might be too stiff for the VooDoo cam but you will have to check them to make sure. The Comp Cams #911 valvespring works fine with that Lunati 220/226 grind. All new cams must be properly broken in. 


Ron