New 427 Dyno Numbers : Learn from my mistakes!

[Shelbytexas]

I hope many will find this info and interesting - this is a follow -up to that previously posted. At issue was the 454 (427 with 3.98 crank) that produced only 301 Hp and 385 ft-lbs of torque.

Engine: '65 Center-Oiler with 3.98 Crank
Edelbrock Alum heads
2.19 / 1.75 valves
Police intersecptor alum. intake
DaVinci 850 Carb
Harlan Sharp Roller Rockers
2.5 inch exhaust
Flowmaster mufflers
timing: 10 degrees initial, 36 d total
Cam: Comp Cams Extreme Energy Hydrolic: .565 lift / 230 d dur @ .050
Car is a '68 Shelby Convert (3450 lbs)

HP measure was at the rear wheels through a toploader.

Measured HP: 301 @ 5200
Measured Torque: 385 ft-lbs

Luckily, at the dyno, the head gasket blew and I opted for Kieth Craft to rebuild my top end:

NEW ENGINE:
Heads: same with CK Stage II porting
CAM: Hydrolic Roller 236 / 242, .568 / .588

With this being the ONLY differences, new Dyno #s:

Measured HP: 406 @ 5700
Measured Torque: 480 @ 3600


SO, I PICKED UP 105 HP AND 95 FT-LBS OF TORQUE, EVEN BY GOING WITH WHAT KIETH CALLED THE "MILD" CAM. IT IDLES ALMOST IDENTICALLY TO THE PREVIOUS SET-UP, WITH THE SAME VACUUM (ACTUALLY A LITTLE MORE - AROUND 10 LBS AT 950 RPM).
THE HP WAS STILL CLIMBING AT 5700, BUT THE STOCK POINTS DISTRIBUTOR (NOW BEING REPLACED), WAS BECOMING VERY ERATIC AT THIS RPM. THERE IS CERTAINLY ANOTHER 10 TO 20 HP WHEN THIS IS FINISHED!

Of course I have to thank the Kieth Craft guys and Kieth who personally handled this "crisis". Next time CK will do my engine the FIRST time - it will be a LOT cheaper!