Im in need of a cam and need to hear what Team Chevelle recommendation between the two. let me just start off by say im just so glad that Harold is back to doing his thing and I look forward to getting one of his cams in my 84 Camaro. Now between the two the 276/284 give me a higher Dynamic compression of 8:43:1 compared to the 280/288 Dynamic compression of 8:30:1.
here is my combo, so please give me your opinion on what will be the best for my engine.

My SBC 409

Engine: 400 SBC ID# 330817/14y139664/ T0508CSU
(4.125 bore X 3.750 stroke) after .040 bore (4.165 bore x 3.75 stroke =409)

Crank: Scat 9000 Crank 3.750 6.00, Internally Balance, Part# 400-3750-6000

Bearing: Clevite– MS1038P Mains and CB663P Rods

Piston: Wiseco Pistons, .040 over, 5.4cc; 430 grams, Part# PT020H4

Rods: Eagle ESP 4340 H-Rods 6.0, Part# CRS6000B3D

Block: Zero Deck: 0.000

Compression Ratio: Static-10:48 Dynamic-8:30

Cam: Grind: "Need Help"

Heads: AFR 195 Part# 1035 w/23º valve angle, 74cc, drilled steam holes

Head Gasket: Fel-Pro-1014 / 0.039

Intake: Edelbrock RPM #7101

Carb: Holley 750

Rear End Gear: 3:73

Transmission: Pro-Built Street/Strip 700R4

Stall Converter: A.C.T. 3000 Stall

Exhaust: Hooker Super Comp headers 1 5/8 Headers part # 2460-1 ceramic coated;
Hooker Super Competition high flow cat-back exhaust system, Intermediate pipe: 3 in.
* Tail pipe diameter: 2 1/2 in.
* Dual tail pipes out the rear under the bumper

Thanks: David

I would put a Hyd roller in it.
You need more cam IMO.
Have UDHarold set you up with something like a 288 adv 234@.050 .530 lift single pattern.
108 sep if you don`t mind the "temperment"

If you want a Hyd F/T his 296 adv 239@.050 .507 lift on whatever sep you want would work very well.
Put Rhoads lifters on it with 1.6 rockers
Both of these cams run well in a 406 motor graemlins/thumbsup.gif

I am running 8.44 DCR on 93 pump gas and its fine, yours should be too if you keep the quench tight. Harolds cams will "act" a little bigger than my Comp does anyway so in reality either my DCR is a little higher than the calculated 8.44:1 or yours would be a little lower. My point is that you should be OK on 93 octane with your compression ratio . . . hope that makes sense.

Sounds like you already made your mind up on the brand so why not just talk to Harold on which grind?

ps. now Big Red, now why on God's green earth would he want a hydraulic roller? :eek: ;)

So he could stick some solid roller lifters on it like Big Red graemlins/thumbsup.gif