So. After dropping off the crank,rods,and halo in November, I finally got proof of life that it's coming back together.
Got some new valve covers from Fusick

 

Oh, I guess you want specs? Here's what's up
455 F block 060 over
4.24" offset ground 425 crank
J&S Machine 5 main halo
7.2 BME forged aluminum rods
CP Bullets for a 496. 4.185 bore
off the shelf Travato grind 491/510 236/242 hydraulic roller
Morel roller lifters
.. ...AND, there will be a non--EGR Torker, last installed in the 80s, pushing a 70S to low 12s, that will get cleaned up and used for the build

 

Is that 410 a typo, or is the intake that much shorter than the exhaust?

 

Yes, yes, it was a Dickleksick moment; I fixed it to 491/510...

 

What is the LSA on that cam ?

 

 

I am confused......

Why are you using Aluminum Long Rods and the 496 spec piston with a very small lift Hyd. Roller cam for a built engine?

What heads are you going with?

Power and E.T. goals?

 

63cc Edelbrocks with 2.15 intakes. The cam was spec'ed by Travato based on compression and displacement.

It pulled 116mph in the 1/4 before. Yes, it's an odd duck, but just a street car on pump gas.

 

I wondered the same thing "cam"? Those new 1.7 rockers EFI's selling could be of help here on the intake.

 

Those are more like “Thump’r” lobes. Then at the very least I’d throw 1.7 rockers on it. I don’t care what Bill says, even with stock Edelbrocks you’re leaving HP on the table.

 

Oh? How much, ya think?

 

Maybe 10 or so. At this point it’s just a band aid to be honest. That cam is NOT the best grind for your application. Again I don’t care what Bill says. You have a decent cyl head, use it.

 

I'm not dropping another $400 for 10hp. I don't have a dyno queen; I drive it- A LOT. The heads had about 20k on them, with the last 12k on a hydraulic roller. The valve breaking was not exactly expected, but it's not a huge surprise, either. Bill's quote was "I got a grind with wicked throttle response" , and it does. Having a 4 speed makes it that much more fun.I still can't drive it well enough to match the theoretical ET potential; that's the carrot on the stick. Bottom line: it's against the "rules", it revs quick, and I don't need race gas. I have no complaints.

 

Build it and enjoy it. The " Engine Gods" don't have to dictate your build.

 

1320/116=11.37 Maryland has the right air to make power.

 

Bill likes to sell parts he has laying around.

 

Still talking about 10hp....

 

I hear ya, I get it. My focus was more on maximizing your combination, that’s all.
And just an FYI, throttle response has a lot more to do with than just the cam, compression ratio, rotating assembly, intake, carb/tune. Again just an FYI.
Best of luck, I’m sure you’ll reach your goals, they’re very realistic.

 

That 10HP you keep posting really depends on how the OP heads flows from .490-.600, on a well done head thats a big increase in CFM. Looking at my Edelbrock flow numbers it could be 10 HP on a unmodified head, 6 CFM from .500-.600. Ported thats a different story.

 

What brand of valve were/are you using and what is the spring pressure on the seat?

Are you replacing all the valves with another brand of better quality/customs or just replacing the one valve that broke with the same brand and type as before?

 

The valve, and corresponding springs that floated repeatedly, were 2002ish stock Edelbrocks that came with the heads. They've been "gone through"/inspected twice since purchased. The "new" heads have new intake valves, minimum, because 2.15. The new springs are "leftovers" spec'ed by Travato for his cam. They're probably PAC, but I didn't interrogate him for a part number, either.
if it were 50-100hp, I might reconsider my life decisions, but I'm not gonna sweat 10 that I can't drive now.

 

Got these today. Thanks, Mark

 

So, it became a game of compromises; the valve springs needed 230 to work, then the studs were short along with everything else. Long story short: I got a Holley Street Dominator, 2" rocker studs, 10" push rods, solid BAMs on a hydraulic core, all because nobody makes a 2.15 intake valve for Olds. I was really depressed that no one thought it would crack 600hp. We'll see, but she gonna be badass.

 

599 crankshaft HP @ 3800 pounds = 127 MPH
1320/127=10.39 ET
I assume you race @ MIR so theres the negative DA which will help you.

 

Bruce, it will haul ***👍

 

MIR is 2.5 hrs away. I usually run Mason-Dixon, but 75-80 is supposed to reopen this weekend and that's only 15 minutes.

 

You might want to consider making the drive to MIR.