Author Topic: Guess the horsepower - first of two "sneaky 461" - extra cheating included  (Read 4630 times)

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My427stang

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I am bringing two engines down to Kentucky on November 15, going to have a couple dyno days, good reason to hang around with Brent, escape Nebraska for a working couple of days "off", along with a good midpoint for the owner. This is the first of two 461s, the second I will post in another thread. I figured I'd throw it out to see what people think. 

The reason I say some cheating included is that I have dyno data for a nearly identical build, same dyno, and I will include the changes here, so you are really only guessing the difference of the parts.

Here is the first CJ that was done on the same dyno. 

http://fepower.net/simplemachinesforum/index.php?topic=7690.0



Here is the engine to be dyno'd, different engine completely, but listed all the changes from the last one

461 cid 428, 10.3:1, Racetech dish pistons, 1.0/1.0/2.0 Mahle rings, .010 above deck, .041 quench (all minor changes)
Heads went from CnC ported CJ iron, to Trick Flow heads name milled off to hide them a little
Intake went from locally ported CJ iron, to Joe Craine ported -F PI intake flowing between 350-370 cfm per port
Cam went from 237/237 .634, 114 LSA on 106 to 235/237 .634, 114 LSA on 107
Carb went from 830 cfm Quick Fuel Brawler to custom built Quick Fuel 780 cfm vac sec
Connecting rods went from SCAT 6.70 to Molnar 6.70 much lighter
Windage Tray went from Ford factory CJ to Canton Screen
Oil pump went from M57HV out of the box, to Doug Garifo bluepwinted M57HV with standard spring, shimmed with his provided +10 psi shim

As you can see, many small changes from the combo this summer, the biggest being the Trick Flow heads.  No prize forthcoming, but there will be a second engine to guess, and all the glory that comes with guessing it correctly!

This one is going in a 1968.5 CJ fastback Mustang, 4 speed, 3.91s


« Last Edit: November 01, 2019, 05:58:50 AM by My427stang »
---------------------------------
Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

338Raptor

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #1 on: November 01, 2019, 08:51:46 AM »
541 hp
ERA 427SC Cobra: Iron ‘67 482 SOHC, TKX 5 speed, TrueTrac 3.31 IRS, Magnesium Halibrands, Avon CR6ZZ tires. 

1969 Shelby GT350, 4 speed.

1967 Mustang Fastback: Close ratio T56 Magnum, Fab-9, Wilwood superlite brakes, Torque arm rear suspension, TCI-IFS with shock tower delete, (Coming soon, FE motor TBD)

1970 F250 4x4 Mud Truck, 557 BBF, as cast P51 heads, 900 hp @6700rpm, 801 tq, Q16, C6.

2012 Cobra Jet Mustang factory drag car, 5.4 liter 4.0 Whipple, 970 RWHP.

1964 Galaxie 500XL, 35 spline 3.70 Strange S-Trac, 6R80, (Coming soon: Pond Aluminum 525 SOHC, 800hp)

Joe-JDC

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #2 on: November 01, 2019, 11:02:11 AM »
599.3 hp    Joe-JDC
Joe-JDC '70GT-500

BBFORDFAN

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #3 on: November 01, 2019, 11:56:15 AM »
576hp

fryedaddy

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #4 on: November 01, 2019, 01:36:17 PM »
imgoing to say 588
1966 comet caliente 428 4 speed owned since 1983                                                 1973 f250 ranger xlt 360 4 speed papaw bought new

Stangman

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #5 on: November 01, 2019, 01:39:43 PM »
564 HP
559 Torque
Should be fun in that car.
10.80-11.20 quarter

6667fan

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #6 on: November 04, 2019, 12:59:38 PM »
546 peak hp

JB
JB


67 Fairlane 500
482 cid 636/619.
Tunnel Wedge, Survival EMC CNC heads, Lykins Custom Hydraulic Roller, Ram adjustable clutch, Jerico 4-spd, Strange third member with Detroit Locker, 35 spline axles, 4.86
10.68@125.71 1.56 60’

Gregwill16

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #7 on: November 04, 2019, 09:23:30 PM »
572 hp

mn67

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #8 on: November 05, 2019, 08:44:53 AM »
530 HP
1971 Maverick Grabber

Twinibeam66

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #9 on: November 05, 2019, 08:47:20 AM »
543 HP

DuckRyder

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #10 on: November 09, 2019, 07:23:26 AM »
I'm gonna say 533.

Good looking engine!
Robert

My427stang

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #11 on: November 10, 2019, 09:39:50 AM »
As I said, ready to go with two, this one looks deceivingly stock :)

Should be fun on the dyno and even more fun in a 68.5 3.91 geared fastback Mustang!

---------------------------------
Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

hhiibel

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #12 on: November 10, 2019, 03:18:58 PM »
535hp. 568tq

My427stang

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #13 on: November 15, 2019, 07:57:56 PM »
Really good day on the dyno with the TF headed motor.  Really big flat curves and big numbers for a 235 degree intake lobe and 114 LSA, 780 carb, no carb spacers, dual plane, 30 degrees of advance.  Looks like a bone stock 68.5 CJ externally

HP 568 @ 5500 (carried 560+ hp from 5250 to 6250)  Only 8 hp lower than peak at 6250 rpm

TQ 578 @ 4750 (freight train torque curve at or over 570 fl lbs from 3250 rpm t0 5000 rpm!)

As with the other, I will post the numbers in the dyno section when I get home!  This will be a very mean little resto Mustang

Another great day with Brent and the gang, hope to get back soon with another build!
---------------------------------
Ross
Bullock's Power Service, LLC
- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
- 71 F100 shortbed 4x4, 461 cid FE, headers, Victor Pro-flo EFI, Comp Custom HFT cam, 3.50 9 inch

Joe-JDC

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Re: Guess the horsepower - first of two "sneaky 461" - extra cheating included
« Reply #14 on: November 15, 2019, 10:47:54 PM »
Should be a strong streeter.  Just curious what the idle rpm was, and how much vacuum it was pulling at idle.  That camshaft is close to what I would pick for one of my street builds, and I wonder if it would have enough vacuum for power brakes, etc.?  Sounds like it would have been the perfect candidate for a couple of spacer tests.  The ram air should work with at least a 1/2" spacer.  Joe-JDC
Joe-JDC '70GT-500