Looking for Street Sweeper HT tune

[Billv302]

I did a search for tunes and couldn't find anything so I thought I would ask for help. I'm installing a FTI Street Sweeper HT camshaft 228/232 .612/.600 on 111 lobe center. This cam has 8 degrees of overlap and I'd like to find a good tune to start and modify from since I know its going to be tough. My car is a 2000 Camaro with a 5.7L and M6 and 3.73 gears. Here is a full list of mods:

PRC 5.3L Stage 2.5 CNC cylinder heads 63cc
GM head gaskets
FAST 102mm intake lightly ported
FAST 92mm throttle body
42lb injectors
100mm MAF with Fast Toys lid
25% under-drive pulley
Hooker 1-3/4 long tube headers with
3" off road Y 3"to4" merge going into the SLP exhaust

Thanks a lot for your help

[JasonS5555]

Speaking personally, I'd start with a known good stock 2000 tune and change it to suit your combo. There are way too many not so good tunes out there to trust your nice new setup with. You might also let us know what your intended use is. Street/strip/RR etc...

Our autox car is a 5.7L '98 with the following (similar to your cam):

PRC LS6 Stage 2.5 heads
Ls6 intake
227/234 .614”/.612” 110LSA +2 advance (with 1.7 ratio rockers)
Comp LSL/LXL lobes 54-000-11 3 bolt cam core
13017R/13160R HR110LSA +2 advance (108 installed intake centerline)
30 lb Red SVO injectors
Same Hookers you have

We tuned the MAF, VE tables and WOT with a wide band. See the pinned post at the top of the forum for how to's on the MAF and VE tables.

The biggest issue was tuning the idle with a super light 110 tooth flywheel and 7.25" clutch. So little inertia and the tight lobe sep was difficult but not impossible. We did the following (also a good how to tune a big cam how to at the top of the forum):

increased the idle rpm to 950
set idle airflow using Patrick K's method
decreased the overspeed and underspeed timing tables by about 60%,
reduced the amount of throttle cracker air (less inertia to spin up)
increased the throttle follower decay (again less inertia)

In short, there isn't a magic bullet. Every tune is a little different. Just do a little reading and ask questions as you go.

[Billv302]

Thanks for the reply! I do need to spend some time learning more about this topic and I appreciate your suggestions. My car is a daily driver that will see the drag strip from time to time. I do like the looks of your cam too. Other than the issues you stated how happy are you with its performance?

[JasonS5555]

Extremely happy with the cam. Same peak HP as a larger duration lower lift cam we had with more low end torque.

Jason