I spoke with CC tech line today and was advised to go bigger than what I originally intended. Yesterday I was contemplating the XR276HR, now something new... They recommended 08-000-9 Grind #3315/3316, HR112+4, 230/236 Dur with 544/555 lift using my 1.6 RR's. Using the small base circle.
What do you guys think, go for it or stay with the XR276HR? This is not a daily driver but needs to be streetable, I may see the track two three times per year for fun. Anyone using this cam?

Here's my 383 project (L-98 Roller):
Eagle ESP Balanced Rotating street/strip Kit
Eagle Cast Steel Crankshaft
5140 Steel SIR 6" rods
SRP -5cc pistons
yielding a 10.5 cc ratio after machine work

Holley Stealth Ram with stock Throttle Body
AFR190's milled to 65cc (L-98 angle plug design)
30# injectors
700R4 with Vigilante 2800 stall and 3:42 gears
Hooker 2055 Headers to single 3" and Aero chamber muffler

Stock weight other than... Fiberglass Cowl hood, AL water pump, AL heads.

Well, I need to purchase soon so, lets hear your thoughts. And of course, I'm learning the DIY PROM! Thanks.

 

In two out of two experiences with Comp Cams and their recommendations, I've found that, at least for my purposes, their out-of-the-catalog, cookie-cutter recommendation is very conservative. What the sales person on the phone would suggest and what a real application engineer might suggest are apparently two different things. I changed out the original Comp for a more aggressive grind in my LT1 because of that. Fortunately, I was able to recover some of the cost.

 

I'd almost bet if you called camhelp 10 days in a row and got different tech people you would probably get 8 different suggestions. I would never use a reduced base circle cam in a sbc, a standard sbc cam core is already small. I guess I just like stable valvetrain. If you need the clearance get a set of rods with capscrews. Otherwise the cam specs look good and would be streetable in a 383.

 

I ran that exact cam with the exception that it was for a non-roller block. My combination was:
383 ci
TRW flattops with 2 valve relief
5.7 rods
AFR 190's milled to 62cc
Comp 230/236 .544/.555 112 lsa installed at 108
MiniRam 58mm tbody
30# injectors
Vigilante 3200 stall
3.70 gears
Hooker #2210 Super Comps
Dual cats into a 4" Mufflex
DFI

We tuned the car on a chassis dyno and made 385 hp@ 6400
This was the 18th dyno pull AND THE MOTOR WAS UP TO 220 DEGREES ON THIS FINAL PULL(a cooler motor would have probably generated another 10 hp).
With this tune, the car went 11.81 at 115. Further tweeking netted another tenth and 1.5 mph.

It's a good cam choice although I prefer a single pattern grind with the AFR's(my opinion).

www.geocities.com/dzperf

 

Nice Hopefully I'll get the same results when I get it all back together. I know this is going to require a lot of tuning to see those results! Fun Fun! I did buy the cam, the custom grnd above.