im helping a buddie of mine on a build for his truck. its a 2010 ccsb 4x4 5.3/6l80e with 3.73 gears and 33" tires

parts list:
box stock TVS1900
ARH long tubes
DOD delete kit with ls9 head gaskets, arp head bolts, and ls7 lifters
PRC dual valve springs
7.4 pushrods
comp high lift xr265hr.

this cam was recommended by texas speed. he told them the truck is used for towing/DD and he wants to keep the stock torque converter. i know this cam will work, but is this a good option for this application?

thanks for the input.

 

They're on the right track keeping it small... but I'd want more exhaust duration even still. That's just me being picky. With a maggie kit as it comes its very low boost... The cam selection becomes much more important to low end power at low boost and reacts more like an NA cam does. If he planned to up it to say 10 PSI I would make that 222 exhaust duration with everything else the same. 212/222 114+2

 

roughly how much boost will this combo make with the stock pulley? 5-6psi??

 

Pretty sure magnacharger targets like 6 PSI as the kit comes. So with a cam and headers it will be even less.

Put it this way when I bought mine I got it from a guy who ran it on a bone stock 5.3 with a 3.2 pulley and made 10 PSI. I put it on my truck with the cammed 6.0 and ARH and it made 5.5 or so.

 

I think the cam will work fine as is but if I were to customize it, I would also add some more exhaust duration and advance it a few degrees to center the overlap at TDC. Might consider using a different lobe to add some lift if you are planning to use the dual springs anyway, otherwise just use LS6 springs or another quality beehive.

Using XFI lobes... 212/230 .598/.604 114+4 That would provide -5* overlap @.050 centered at TDC

 

Ok thanks guys for your input!

 

Btw, the high lift xr265hr is the same cam i have in my truck and it pulls really hard through the mid range. If it runs anywhere close to how mine runs, he will be happy. I told him to go ahead and order a smaller pulley and another belt because boost is addicting. Lol

 

Ok, he already ordered the cam, so we will b using the 212/218. Another question, i have searched and it looks like a 2.9 pulley should net around 7psi boost on this setup. Does this sound about right? Should we have belt slip issues at this point? I wouldnt think so.

 

I think the 2.9 will show you more boost that that. I saw 10 PSI out of a 2.7 on a cammed LQ9. Bigger motor, bigger cam, etc. I wouldnt be surprised to see nearly 10 PSI out of a 2.9.