Hey to all. I have a 2005 CrewCab Silverado 2wd. I daily drive this thing 120miles round-trip and occationally tow (last week, I towed a 9,000 pound trailer). I have a set of #241 heads that I will soon port. I have on order a yank tt3000 stall and a set of headers of a RST Silverado. I will soon order a set of 4.10 gears and an intake. With these mods on this heavy truck, what cam would you suggest? Keep in mind I daily drive it, so fuel economy is a huge factor. Also, I tow heavy loads from time to time. I want at least 17mpg, the ability to tow at least 5,000 pounds, and would like to run very, very low 13's NA and will later go with a 100-150hp shot to drop into the mid-12's.

All this said, what cam would work?

 

You are going to have a hard time getting 17mpg with the 4.10 gears alone.....

 

and youll have an even harder time getting a crewcab to run low 13's N/A with a 5.3L.....even FI a 5.3 might get you there but i think a 6L would do better....

 

 

jonnyboy,
I don't want to further rain on your parade, but most of these goals and objectives are mutually exclusive. The reality is that a crew cab truck with a 5.3 L used as a daily driver and tow vehicle can be made to perform better. The 4.10 rear end is a good place to start and a mild cam like my 200/206 109 LSA will have improved performance over stock and is a good towing/daily driver cam. You need to stay with a stock converter if you intend to use your truck as a you describe. In fact, with a crew cab/Avalanche/Suburban/Yukon/Escalade it's impractical to really make much of a showing on the quarter mile . . . even with forced induction.

In general, if you want to emphasize the strip side of a truck, it's better to start with a regular cab short bed. That way it's light enough to accelerate reasonably (power to weight ratio). A truck heavily modified for the strip will never make a decent daily driver and an even poorer tow vehicle. Typical performance mods shoot good milage in the head at point blank range.

Life's like that. You can't have it all and you have to make choices.

Steve

 

Well said Steve.

To the OP -- you can make a fast truck. You can even make a fast daily driver. But your fuel economy is going to suck. My current avg mpg on the TT SSS is 7.4mpg. That is not a typo where I forgot the leading 1.

Yes, my truck is probably 2.5+ seconds faster than your goal, and that's a big thing, but frankly, there is no way you will see 17mpg. My wife's stock avalanche (except for 20" wheels) gets avg 16.7mpg. However, she's running a custom tune I wrote specifically for fuel economy -- a tune that is pretty much 180* from what I'd be doing if she wanted a fast 1/4 time...

 

my crew cab gets 16.5 on the highway and 13.5 in town. if it will hook it will run high 13's. see mods in sig. a 6.0 swap will get you your goals but WILL fall short on your fuel mileage expectations. got to pay to play. i didn't buy mine for fuel mileage though. that is the only use i have found for an import.

 

that's the kind of input i was looking for. i kinda thought 17mpg was out of reach, but i also heard "shoot for the moon; even if you miss, you're among the stars."

even if i don't hit my magic numbers, i'll still have a quick dd crewcab that can still tow.

so i'm guessing a tr200 cam, my tt3000 stall, 4.10 gears, headers, custom 3" exhaust, intake, ported heads, intake will get me close to the 13's if i can hook? if not, i'll throw some n2o on it.

 

the tr220 with tt3000 and 4.10's is a good combo, but I would NOT put those 241's in there...

 

thanks for the input. i guess i'll drop the $500 on a new set of 243's to put on.