Stroked 460 Questions

[kkosche]

Finalizing a purchase on a SP. Has a 460 that is stroked to 521. Running P51 heads and a CompCams solid roller (FF-4420-4132-R108). Victor 4500 /1050 Holly. Compression is 10.4:1. TKO500 and Ford IRS. Car will be ran near Seattle, WA.

Questions:

1. How often will I need to mess with adjusting the valve train? I have only messed with small blocks w/hydraulic lifters . . . set and forget.

2. The car is coming from high altitude (5000' plus) do you have a dyno/tuner/shop that is recommend some where between Bellingham and Olympia, WA?

3. If I wanted to skip tuning the Holly and jump right to an 8 stack set up for this specific set up, what would the specific recommendation be (components, existing cam, etc?). Budget $10K. Car is already plumbed with a return line.

4. If I go stack set up, would the tuner in question #2 be different?

5. Any other recommendations, suggestions, watch words of advice? Most of the time I am pretty "teach-able".

Thank you!

[blykins]

1. I'd check the lash fairly frequently. That's a pretty stout cam as far as lobe aggression goes. I couldn't find that intake lobe in the catalog, but the exhaust lobe is an RT series, which is pretty aggressive. I don't know how often you drive, but I'd probably check the lash once a month.

2. Hopefully some of the members local to you will chip in here.

3. 8 Stack carb or 8 Stack EFI? Each would require a different camshaft to be a solid performer. Unless you go with a self tuning EFI system, you won't find anything easier to tune than that Dominator.

4. Yes, unless you go with a self tuning EFI.

5. That engine with that cam and that car is going to be an on/off switch as far as power, so just be careful.

[kkosche]

bykins - Thank you. . . 8 Stack EFI . . . I think self-tuning unless folks advise differently.

I don't know that I am down with messing with the valve train every month. Too many other projects / interests. . . . so maybe a hydraulic roller and 8 stack EFI is in order. . . but I am also concerned about butchering up a matched package . . those P51 heads apparently can swallow tennis ball's.

[blykins]

They are nice heads, but that doesn't limit your selection in camshafts. You can still make enormous amounts of horsepower wit ha hydraulic roller. I can make around 750 with a hydraulic roller in a 529ci BBF and those heads or the Boss 9 heads.

With the 8 stack stuff, the cam has to be tailored to it, as the requirements are a little different.

[Tom Wells]

kkosche,

I agree with Brent. A hydraulic roller is a good choice with the proper cam profile.

I've run a Holley EFI setup for 25K+ miles with a hydraulic roller in a 521 and still grin when I crank it up.

Tom

[vscntkK]

Chuc mung nam moi
Cung nhau xay dung dien dan manh me hon trong nam nay the
Tran trong cam on

[YerDugliness]

Bruce? Bruce Lee?

....is that you, Bruce?

Dugly

[avdcav]

Good luck with the new ride "
Sunoco and Exxon Will soon thank you also.

[kkosche]

Thanks all. I fly out on Saturday to see the car . . . and most likely pry come cash out of my hands. . . . I think I will end up tuning what is there first . . then bite off the EFI and Cam after a good shake down.

[jhv48]

Why not find a car that has an engine closer to what you actually want?

You're going to spend at least $10k with a cam and fuel injection change in addition to the price of the car and the taxes and registration fees. Possibly much more if you change out the heads.

If it were me, I would continue to search for a car that more closely meets my wish list. Just my opinion.

[blykins]

Cams are pretty cheap...about $350 for a custom grind.

The FAST EZ EFI setup on an Inglese 460 or Kaase 8-stack injection manifold would probably run close to $6k by the time it's over with.

[kkosche]

Originally Posted by jhv48

Why not find a car that has an engine closer to what you actually want?

You're going to spend at least $10k with a cam and fuel injection change in addition to the price of the car and the taxes and registration fees. Possibly much more if you change out the heads.

If it were me, I would continue to search for a car that more closely meets my wish list. Just my opinion.

It all comes down to price. For the price I am purchasing the car . . . I could run it as is for a period of time . . . dump $10K into a cam and injection (I see no reason why the heads would need to be changed) . . . and still be at a price point that is considerably less than equivalently equipped SP cars that I have seen in the past 2 years of searching.

In addition, part of the fun for me . . . is in the planing/doing.

[Jerry Clayton]

worst thing about 4500 holleys is the throttle linkage ratio to the seconaries---------
tunable carbs but start off as race carbs---

[kkosche]

Flew down and back to Denver yesterday. . . and bought a car.

Loaded onto the transport (lucky arrangement) this afternoon. Should be here on Tuesday.

Here is a picture.

[kkosche]

Best I can tell here are the cam specs.

COMP Cams grind No. FF-4420-4132-R108, 256/262 degrees duration at 0.050-inch tappet rise. When combined with the 1.73 ratio of the P51 rockers, the cam delivers a whopping 0.761/0.743-inch lift.

The owner who had the motor built found the drivability . . . . a bit difficult with a single plane manifold (came with the car) . . so there is some form of dual plane on it now. Most likely that manifold is costing some serious power . . but it has decent drivability.

Seems like a more reasonable approach would be a hydraulic roller cam, Torker II that is ported to match the P51 heads.

I welcome comments / suggestions.

In the mean time, I am going to tune what is there for Sea Level . . and do some research.

[blown871]

was that car just on e-bay?
I was ....following it...if it was.

and agree; the thrill of the hunt!!
It is an obsession for sure.

[kkosche]

Originally Posted by blown871

was that car just on e-bay?
I was ....following it...if it was.

and agree; the thrill of the hunt!!
It is an obsession for sure.

Yes indeed .. it was listed . . came down w/no bids. Very nice gentleman. Flew out on Saturday, car was on the transport Sunday and was in Lake Stevens, WA on Tuesday at 7 AM. Stars just lined up. Very happy (so far) with the purchase.

[keane]

Hi Dave in UK, nice looking ride, I have a Dax with a 545 stroked 460, running a solid roller Comp xr292, similar spec to yours but with less lift, a Victor/1050 dominator, and just changed from a Broader C6 to a TKO 600, I have ported TFS heads and its a wicked drive! give the current setup a chance before you start spending more bucks, rolling road showed 730 Tq, love those BBF's. Dave

[D-CEL]

Kkosche,

Congratulations on a great purchase! That engine package will lay down some serious numbers when it’s tuned. Put a set of Drag radials on it quick!! It will be a scary bastard on those tires ( Goodyear Eagle GTII’s? yikes!!) Yea that cam with a big single plane and a Dominator = less than perfect drivability! Lol
But EFI is a great tamer of big cammed street cars, making it is easy to compensate for the weak vacuum signal . $10k should get it done, so long as you don’t get retail gouged.
I like the Kinsler SCJ manifold but they are pricey at around $6500(last I checked)

and the TWM set up. I just picked up this complete TWM set up with an older Electro-Motive computer for $2K!
I’m fairly sure I’m going to use the new Holley Dominator EFI controller. Holley Performance Dominator EFI – ECU Products
I have a friend that does it for a living and he has nothing but good things to say about it. Very easy user interface, self tuning options, even a hand held tuner if you don’t want to use a laptop

Jason

[mdross1]

This is wet dream stuff.Seriously considered the Webers for our car but too many complained of dailing them in and keeping them there.Now this EFI stuff has the looks for sure,but what about filtering the air anything that looks good?
Just had a 1000cfm dbl pmp custom built need to tweak it before thinking about anything else.