svslow

I like this.

kinglt-1

iTrader: (26)

sounds awful...must need different exhaust. Stock gears and converter I would go no larger then the 212/218 113+5 and the 206/212 114 would probably be even better.

Here is a commotion stage 2 205/210
https://ls1tech.com/forums/dynamomet...l#post18368630

SQRBODYLSFREEK

I got spec'd a 212/218 .550/.550 112 lsa from texas speed. My truck is a crew cab shorty with 4WD. I have long tube headers and a catted y-pipe with a slp Blackwing. The cam install will be in the spring, also a circle d 3000 or 3200 stall converter. All of this with Blackbear tune. This, I've been told by many in the industry, should prove to be a great setup on this little daily driven 4.8L....

thunderstruck507

iTrader: (18)

This post nailed it.

Truck is going to be hilariously slow with that cam and no gear or stall. Will be slower than stock most likely.

224/232 would be a nice mid size cam for a 5.7...has no business in a 4.8 in a full size truck what so ever

To be perfectly honest the only way one of these trucks is going to be a "monster" is with a blower, turbo, or large shot of nitrous and all the supporting mods. I ran a 500rwhp turbo 4.8 short wide in my car the other day and pulled it on the top end.

stockA4

[QUOTE=Forcefed86;19435410]All just my opinion... but I can't see 115 LSA on a factory headed 4.8 ever being optimal with max average power across the board being the goal. I'd say he should be looking in the 109 or less to squeak the absolute most out of it. With duration around 215 or less and moderate .575ish lift to take advantage of all the OEM intake, heads, etc...

Big Duration sells cams because of the bigger is better mentality. It's a proven fact. Then the cam designer has to do a bunch of BS to try and fix it. Widen the LSA beyond reasonable amounts or advance it a ton to get low end back...which throws off the valve events leading to a downward spiral **** show of a camshaft overall.

This one would sound mean, idle decent, and make vacuum. 216/222 @ 111.

What if we wanted to go with even shorter timing than this to?

I've been drooling over that cam for a while but I'm thinking it might be overkill for my setup. how do you guys think it would behave in a unopened 2002 706 headed LR4 with just LS6 springs, LS6 intake manifold and injectors, and 2002 F-body or truck exhaust manifolds?

has anyone actually tried a shorter duration tight lsa in a mild 4.8 like this? I'm wondering how rowdy a 109-110 lsa cam with even less duration than the summit cam would be for a daily driver that needs to make reliable power but gets shifted at 6800 on the weekends.

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stockA4

has anyone ever tried this?

Forcefed86

iTrader: (4)

Typically a small engine with high flowing heads relative to the cubes (like a 4.8) will not need a super tight LSA. 109 is about the optimal LSA for a 4.8 with the OEM heads if you are looking for peak average power. Depending on the installed CL, duration, lift, this probably won’t have a smooth idle or efficient low RPM cruise.

Where say a typical 454 BBC with poor flowing heads relative to the cubes will benefit from tighter durations… say 106/107 etc.