Edelbrock BB flow #s

[PRO]

Edelbrocks alum BB cyl head specs,part #6099,291 cfm int,214 cfm exh, @.600 lift @28",84cc chambers,2.14 int valve1.81 exh valve,just thought some of you guys might interested in the flow #s........PRO.....

[PRO]

Just thought Id respond to my own post so it will move back up front as I saw 2 threads concerning Edelbrocks flow #s.....PRO....

[451Mopar]

That's the only flow numbers I have seen also.

Did anyone get a set of these yet?
My buddy is thinking of buying some, but hasen't decided yet since there are no other reported flow numbers from other sources to verify the validity of the Edelbrock claimed flow numbers.

[cdignition]

Those flow numbers for Edelbrock heads seem high for stock unported condition(do we assume edelbrock does not port them?). Indy S/R head are said to flow around 275 CFM int. and 440-1 heads are said to flow at 285 CFM int. This is stock unported condition(we all know these heads work good ported). I dont know the validity if the Edelbrock numbers.....maybe too high, sorta like Hughes Numbers?

[Farm-boy]

I bought a set for $2000 Canadian complete. E-mailed Edelbrock they say shipping begins in April.

[PRO]

I believe Edelbrocks #s,this is why,I built a 360 for my valiant with their sb heads,they flow an advertised 251cfm int,Dart runs the exact same sb with 340 X heads,they flow 210cfm int,Hes about .4 behind me,the rule of thumb id 10cfm of int flow=10 hp,this isnt rocket science but the shoe fits,also Edelbrocks always outflow stockers by about 20-25% for their street heads,go to Edelbrock.com and scan the head flow charts,its enlightening if you know flow #s for various stock heads,ps you wont find the BB heads there go under "NEW PRODUCTS"...........PRO........

[69CORONET440]

got the new Summit catolog today and on page 20: "1961-78 Chrysler 361-440" p/n EDL-6092 pair $1279.95 is this right? must be sb p/n & price huh??? think someone screwed up? c ya

[PRO]

Thats the right part # for BB,sb's are #6077(360) and #6017(340) and thats the right price,But Jegs has them listed for $1199.99 but not in stock yet at either place,patience,patience......PRO......

[rat roaster]

Pro how do you find the quaulity of workmanship on your small block Edelbrocks? Were the bowls blended from factory ? Rough casting edges cleaned up,etc ?

[PRO]

Well rr they were as cast which Id consider a bit rougher than the common iron head but I guess casting flash is a bigger prob with aluminum.I'm running them as supplied,I will extrude hone sometime soon but I wanted a baseline for out of the box,my opinionis there very average as far as port/bowl condition.Im extremely happy with performance gains..........PRO...

[rat roaster]

So Pro. On a average set of template bowl ported 906 or 915 heads, 2.14 x1.81 do you think a person would see substatial performance gains. Cosidering that the rest of the engine components were up to the task ,like cam , intake,carb , etc. would it be possible to see up to .5 off your et with bolting on a set of the edelbrocks BB heads over the 906 or 915s that I mentioned previously. I am guessing that the 915 or 906 would flow 240 cfm in the bowl template form.

[brian phillips]

The edel products seem to be quality products. went 8.09 in 1/8th. popping and spitting at about 5000. Finally found culprit. 9 volts to coil. replaced ballast resistor. feels like i picked up 3 to 4 tenths. Much stronger and revs past 6 grand now. dragstrip very soon. maybe next week. 72 cuda street with edel head 360. 3.91 727 3500 stall

[Dr. Mopar]

Rat roaster I have a performance engine shop 95% of what I do is Mopar I just do a little brand X for my friends and use the money on my Mopars. To give you an Idea a set of steel Big block heads done correctly will flow around 260 cfm. and if you want to go a little more as I do for racing only you can come with 270 cfm. Myself I perfer the 346 and 452 castings, they flow as high as 278 cfm. And to quote Super Flow as it states in my operators manual for every 2 cfm. you gain 1 hp. per cylinder. If you have any questions contact me.

Originally posted by PRO
Well rr they were as cast which Id consider a bit rougher than the common iron head but I guess casting flash is a bigger prob with aluminum.I'm running them as supplied,I will extrude hone sometime soon but I wanted a baseline for out of the box,my opinionis there very average as far as port/bowl condition.Im extremely happy with performance gains..........PRO...

[rat roaster]

Thanks Dr.Mopar . I ordered a set of the E-brock BB heads and will flow them when I get them. A friend of mine ,who runs a engine shop flowed two sets of SRs out of the box found on his bench mid 270 cfm. I hope the E-Brocks can beat that out of the box with a 210 cc int volume compared to a 265cc SR. What are your thoughts on the E-Brock BB heads. Are 291 & 214 real numbers , or does it boil down to who's flow bench you use. I am hoping for a decent gain over the old 915s ,which I will flow when I take them off to see the difference. The weight loss will be good and a chance to run 93 octane fuel will be nice also. By the way what cams do you like in the 500 to 600 mech range for bracket racing. I am running the 557/296 mopar but thought about changing to a Ultradyne. I have 410 gears and a 3800 converter, M1 ,850 holley ,10.5 comp ,2"fenderwell headers ,3600 lbs with driver.

[Dr. Mopar]

[QUOTE]Originally posted by rat roaster
Thanks Dr.Mopar . I ordered a set of the E-brock BB heads and will flow them when I get them. A friend of mine ,who runs a engine shop flowed two sets of SRs out of the box found on his bench mid 270 cfm. I hope the E-Brocks can beat that out of the box with a 210 cc int volume compared to a 265cc SR. What are your thoughts on the E-Brock BB heads. Are 291 & 214 real numbers , or does it boil down to who's flow bench you use. I am hoping for a decent gain over the old 915s ,which I will flow when I take them off to see the difference. The weight loss will be good and a chance to run 93 octane fuel will be nice also. By the way what cams do you like in the 500 to 600 mech range for bracket racing. I am running the 557/296 mopar but thought about changing to a Ultradyne. I have 410 gears and a 3800 converter, M1 ,850 holley ,10.5 comp ,2"fenderwell headers ,3600 lbs with driver. [/QUOTE Rat roaster, I like the Mopar .590 and .620 both the .613 Ultradine is also a good cam. I haven't tested any Edelbrock heads yet but the numbers may be atainable let me know what you think of them when you get them and how they work.]

[ben440brown]

This sounds like a silly question, but what is the volume of a stock combustion chamber on a 452 head with stock valves? At 84 cc's, is the Edelbrock BB heads' chamber volume greater than that of the stock heads?

This obviously leads to whether the compression ratio will change on swapping on the Edelbrock heads.

Ben

[DartGT66]

*A452's, or any other BB open chamber heads chambers are usually between 88 and 92.

[Dr. Mopar]

Originally posted by ben440brown
This sounds like a silly question, but what is the volume of a stock combustion chamber on a 452 head with stock valves? At 84 cc's, is the Edelbrock BB heads' chamber volume greater than that of the stock heads?

This obviously leads to whether the compression ratio will change on swapping on the Edelbrock heads.

Ben

All open chamber big block heads run from 88 to 94 cc's