Missed on this combo?

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Thanks cookietruck. That helps.

Ironmike, this has been an Odyssey of an epic size. I’m at least glad to see that even though you did t get where you wanted to be, your getting more with less.

The Big Mouth heads seem that they may work better on a huge drag engine. Limited upper rpm stuff.
 
more snappy with 74 jets, and more lash and more timing and and victor intake and hand porting, and 18 more torque and 11 more horse! we are happy, and will stay happy if guys that port stuff well will keep doing it and pass it on
 
I'm glad it's finally done and you are happy. I know it's been a nightmare for you.

I love that car. Time to go out and enjoy that beautiful car.
 
Well it ain't no slouch, that is for sure. Glad you weathered the storm.
 
Ironmike said:
Oh. almost forgot....Thanks to everyone who advised, helped, suggested and otherwise just gave their thoughts....special thank you to good ole Yellow Rose for offering his time and effort.View attachment 1715137308
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I told you to use the victor, better intake for what you're doing, and...now that the heads have been passed around in different but similar configurations....the average #s raised a few hundred rpm higher and the peak diff is about 16hp and 10ish ft lbs.
Velocity sure helps!
 
Toluene56 said:
I bet that sucker doesn't hook for nada
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Actually you might be surprised. With the motor in it now (540 ish HP), it CAN hook pretty good.

Good old fashioned sintered iron clutch, 275 Drag Radials at 16psi, and my home made slapper bars adjusted properly..... It has hooked really well. To be consistent it would definitely need an adjustable clutch. No doubt.

Will see soon what more power will do.
 
Ironmike said:
No. Didn't see a reason to even waste my time back then. 530 horsepower was a joke. I still have it though.
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I would like to see the flow numbers of the current eddy heads, i bet the low/mid lift numbers are healthy.
If someone ever says to you that good low lift is garbage, quit listening to them immediately.
 
i was thinking, the bloomer heads were 72CC chambers?
the Hughes 68cc?
what are the current eddies??

maybe the biggest factor here is cranking psi...
 
Ironmike said:
Well, here's the final update. Just got home and the engine is still warn. So as you can guess, I am finally happy. Not a TON of difference from the Hughes Eddy's, but that thing did not sound right and had terrible throttle response.

Great power, good torque and I'm telling ya....that thing is really "snappy",,, I guess the word is. Great throttle response and a real nice 1200 RPM idle.

The only changes from the beginning are new Eddy's hand ported by my guy and a Victor 340 instead of the Super Victor. This is the last pull we made. Tried a race gas/pump gas mix, but on straight pump 93 it looked pretty much the same. (3 HP less) I think it's going to be a real fun street motor in my 3100 pound Demon 4 speed with 4:10'sView attachment 1715137306
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The new combo tops 550Hp 400RPM sooner and never looks back, numbers are up, & the torque band is waaay broader. That IS a TON better, especially for the same
bottom end, for a street car that thing would spank the original combo. Glad You've got it where You want it, now all You have to do is wait out this salt season,LOL!!!!!
Thanks for taking the members along for the ordeal, & now You can drum up some business for Your local Shop, :)!
 
cookietruck said:
i was thinking, the bloomer heads were 72CC chambers?
the Hughes 68cc?
what are the current eddies??

maybe the biggest factor here is cranking psi...
Click to expand...
Chambers are 68cc. I was surprised cranking PSI is only 180. My guy says it's due to the pretty big overlap in the cam.

My cranking PSI in the motor i've been running for 2 summers is 195. It's a 10.75:1, Iron heads(Indy/RHS). Just yanked it out yesterday. Felt kinda weird pulling out such a great running motor, but 45 more horses and 60 pounds off the front end should be worth it. Those Indy heads are 63 pounds a piece! I weighed 'em!
Might put that engine in the classifieds, might keep it for back up........not sure yet.
 
Ironmike said:
Chambers are 68cc. I was surprised cranking PSI is only 180. My guy says it's due to the pretty big overlap in the cam.

My cranking PSI in the motor i've been running for 2 summers is 195. It's a 10.75:1, Iron heads(Indy/RHS). Just yanked it out yesterday. Felt kinda weird pulling out such a great running motor, but 45 more horses and 60 pounds off the front end should be worth it. Those Indy heads are 63 pounds a piece! I weighed 'em!
Might put that engine in the classifieds, might keep it for back up........not sure yet.
Click to expand...
was gonna ask what you were gonna do with the old mill
 
Intake on BM heads;
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FC9087D7-2C60-4514-AAB3-29822251E9C2.jpeg
509D1E45-62C3-429E-BA6E-4A59BD2E1FF8.jpeg
E487D445-2D34-428E-A92F-5CFEDCBFE20F.jpeg
 
replicaracer43 said:
Good lord! Where is the short turn????
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That’s what happens when you have a 170cc runner head and try to make a race head out of it. That why when you see me posting about porting Edelbrock heads or copies I recommend staying away from the floor. I’ll sacrifice some volume for a nicer shortside.
 
I had a set of Hughes cnc ported SB RPM’s here for freshening a few years ago.
From what I gathered, they were the biggest version, without going to the BM(no offset rocker required).

I was shocked at how flat the floor and SSR were.
Equally surprised that you could take the floor that low without ending up with a hole.
They had 2.08 intake valves, and the chamber was blown out pretty good.

Without digging through my notes, I wanna say the “big number” was in the 280 range.

They sounded very rough on the bench at high lifts as well, but I don’t remember the numbers backing up.

Edit: looked it up
284/[email protected]

I’d like to get a BM version on my bench.
 
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