Horsepower Guestimates, please, and E.T. range, PLEASE!

Hi folks,

I'm fixin' to fire up my 464 after almost a decade! Would love your take in horsepower range and E.T. possibilities.

.038 flat-top Wiescos. Pistons installed .020 in hole. Coated on top and sides. Should be around 11.5 to one comp.

Second generation Bulldog heads. Ported by Gessler (R.I.P.) 310/185 at .500" Coated valves, combustion chambers, exhaust ports, springs, retainers

TA 288-94 cam, dialed in at 8* advance, w/ stock rockers mounted w/ studs.

Stock B4-B topped w/ John Osborne 800 Q-Jet

KB (Doug's) coated headers from way back. 1 7/8 tubes. 3" exhaust w/ H-pipe and Walker Super Dyno Max long case.

HEI curved dist w/ Crane adjustable advance

TH 400 w/ mild switch pitch from KB

3:55 cone posi

Seems to me I'm leaving out something major so please lemme know, if so!

Please take care of yourselves/family and enjoy each day as if it were your last--it might be.

TIA

Ranger
Aiken, SC

 

600/11.5. Hows that?

 

Full body GS, any fiberglass body parts ? Full interior , what about light weight wheels, makes a difference also. Weight is a big factor on ET

 

Wow, thanks! If only!

Ranger
Aiken, SC

 

Sorry, for sure. Convertible, no fiberglass, 15x8 stock steel wheels, no power options at all. Full interior; no weight-saving tricks. I'm 200 lbs so guessing it's close to two tons w/ me in it.

Thanks!

Ranger
Aiken, SC

 

510-530 hp
Et- too many factors to estimate, fastest of 11.60 if around 4100 lbs and everything is perfect with slicks and a good 60'

 

IMO that cam is too small for that combo. Your compression will be more like 12.5:1 . Race fuel only. You need a bunch more overlap to bleed off some compression. 500 hp if you’re lucky with that cam. 550 with a better cam. Low 12s

 

I think you'll squeak into the 11s. The switch pitch is neat but you'd be further ahead with a modern converter.

 

Wizard,

what were, and prolly still are, marketed at Wiesco flat-tops did indeed have valve reliefs in them tho I can't remember the cc, but 7 comes to mind?

Thanks, as always, for your input!

Ranger
Aiken, SC

 

I take it you never measured comp ratio?

 

Why is the cam advanced 8*?
My roller cam I have it at 2* advanced.
I don’t know how the 455 responds to high compression with its iron heads, but on my 350 I’m at 11.66 to 1, runs great on the street, BUT I have VERY conservative timing, 30 total.

 

I guestimated it. When I went to pick everything up from Brian Earick, he had built the same engine in his shop; same pistons and Bulldog heads. He had zero decked he block and told me comp. ratio would be 12.0-1. Since my pistons are .020" in the hole I suspected it would be damn close to 11.5. Larry just confirmed this with his tables.

 

That's how it degreed in. From what I've seen that's not uncommon w/ the TA double-roller set-up.

 

Wizard,

thanks for all this work. Yeah, I had figured about 11.5. When I went to pick everything up from Brian Earick
he had built the same engine in his shop; same pistons and Bulldog heads. He had zero decked he block and told me comp. ratio would be 12.0-1. Since my pistons are .020" in the hole I suspected it would be damn close to 11.5.

Car will be street, rarely raced, and I knew I'd be borderline race-gas territory but was hoping w/ conservative timing and two cans of VP octane booster I might be able to squeak by. Thanks again.

Ranger
Aiken, SC

 

Did you degree it yourself to check? I have a 288-94H cam with a TA 9 way double roller and while mine is installed at 4 degrees advanced by the gear markings, it is actually 5.5 degrees advanced when you degree it......

 

Thanks for you input. Yes, degreed it myself; been building engines for 52 years. But you are so right, we can never trust the numbers stamped on the gear especially, but not exclusively, if made in China, as many of them (and parts in general) seem to be, sadly.

Ranger
Aiken, SC

 

true, but honestly I've seen more issues in cam manufacturing. I had one cam grinder admit he just guessed on where to index a nailhead cam he did for me. I was able to to catch the install I wanted at the very last retard notch..

 

The dome/dish volume for those pistons is -8.3cc.