I just finish finalizing my engine with Harold from Ultradyne, This is what I have on TAP for my BaBy.
SBC 400
(4.165 bore X 3.750 stroke)
Crank: Scat 9000 3.750, Internally Ballance
Piston Wiseco Pistons .040, Flattop 5.4cc,
Compression: Static-10.48:1; Dynamic: 8:30:1
Rods: Eagle H Beam 4340 forge Rods 6.0
Block: Zero Deck: 0.000
CAM: Ultradyne 280/288 110 .525/.540 247/255 Pro-Street cam, 2800-7200 RPM
Heads: AFR 195 23º valve angle, 74cc,drilled steam holes.
Head Gasket: Fel-Pro-1014 / 0.039
Intake: Edelbrock AIR-GAP RPM or RPM 7101
Carb: Holley Street Avenger 770 or 750 (3310)

I let Harold select me a Cam and its what I was leaning toward, but he has totally convince me on his cam and the power that this little Bugger would make. Most of all Harold is just a very nice person to talk with and his intellectual knowledge of Cam was a very helpful in making this decision.

I was thinking about the Crane Cam Part Number: 114681
Grind Number: F-280-2 (REPLACES CC-28OA)
Engine Ident: 1957-1987 CHEVROLET V-8 262 THRU 400 CU.IN.
ROUGH IDLE, MODERATE PERFORMANCE USAGE, GOOD MID-RANGE H.P. VALVE SETTING: INTAKE .026 EXHAUST .026 ----> HOT
LIFT: INTAKE @CAM 3454 @VALVE 518 ROCKER ARM RATIO EXHAUST @CAM 3574 @VALVE 536 1.5
ALL LIFTS ARE BASED ON ZERO LASH AND THEORETICAL ROCKER ARM RATIOS CAM TIMING OPENS CLOSES ADV DURATION @ .020 INTAKE 29.0 BTDC 71.0 ABDC 280.0 ° TAPPET LIFT EXHAUST 77.0 BBDC 31.0 ATDC 288.0 °
RPM Range MINIMUM RPM 3400 MAXIMUM RPM 6800
VALVE FLOAT 7400

CAM TIMING OPENS CLOSES MAX LIFT DURATION
@.050 INTAKE 14.0 BTDC 50.0 ABDC 107 °ATDC 244.0 °
TAPPET LIFT EXHAUST 62.0 BBDC 10.0 ATDC 117°BTDC 252.0°

However Harold and everyone else got me hook on Harold Cams...

Looks like it'll be killer. :D

looks like a real nice combo, should make torque like a mother. not to nitpick, just a personal preference, but with the horsepower/rpm range it seems your shooting for i would go with a good quality I beam rod. the h beams just add weight, and a good I beam from just about anyone will easily handle 500 horse. again, just my opinion. and with those heads i think i would ask harold about maybe running 1.6 rockers, to achieve a bit more lift, and use those heads to thier fullest. remember, a big inch smallblock likes to breath. just my .02 . but i will guarantee you will love that motor, good luck with it graemlins/thumbsup.gif

I agree with all here, great set-up.

I agree with 68, I-beam rods, the lower the reciprocating weight, the less the stress on the crank. Lightened crank? Will the counterweights be too big, thus demanding a small base circle cam? I can't believe I asked this question, not when a professional does the engineering.

My 3 ct suggestion, since you are having it internally balanced, I'd go for a Fluidamper balancer.

Enjoy the ride....gas prices? .....Who cares!......Sit down... shut the hell up...hang on !!

I'm not using the I beam ros for the puropose of clearance. I want to have Max clearance with the rods and I will get that Cam from Harold cut on a small base circle cam.
Thanks Again for your comments

Looks like a screamer!

FYI, on my 406, I used aftermarket aluminum heads and the machine shop didn't drill the heads for steam holes...just used a 350 head gasket...my 406 runs 180 degrees....
just in case you decide you don't want to drill them....

Combo looks sweet! graemlins/beers.gif

my 406 is the same as tracy's, no steam holes, no problem. and i used the 1014 gasket as well, for the 4.200 bore and .039 thickness. not trying to push the i beams on you or anything here (honest), but there are a few out there that use cap screws and are good for clearing the cam. again, just an fyi, nothing wrong with h beams either, i'm just a "lighter is better if possible" freak. i actually used eagle i beams w/ my small base circle cam, and they all cleared. i did however touch up the area on the big end of the rods that were close to achieve at least .060, but it was nothing much to speak of. it does sound like a screamer! graemlins/thumbsup.gif