It seems like everyone on the board that has done a cam swap has a 5.3. Would similar specs apply for the a 4.8, or would I need an even more conservative grind than the 5.3?

Anyone running an aftermarket cam in a 4.8? Any dyno numbers? Thanks!

<small>[ December 02, 2002, 02:34 PM: Message edited by: Scream ]</small>

 

if you wanted a cam "equal" to one in a 5.3L you would need to run less duration because of the smaller displacement

for instance, the 212/218 comp cam works good in 5.3L, 206/212 in a 4.8L(maybe a little bit on the small side though). if i was actually going to buy a cam for mine i would probably try and go with something like a 212 .540ish single pattern on a 112lsa (if i still had the stock converter)

i dont see why more people have done it, not much more than headers but you will get more power from it

Bryan

<small>[ December 02, 2002, 03:02 PM: Message edited by: really slow truck ]</small>

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Thunder 2k1:
<strong>check out the ls6 manifold too. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Do you know anyone that has actually done this swap? In theory it won't perform. But I am reaserching trying it. However, it is a pretty involved swap. belts and fuel systems will most likely need to be reworked.

Greg

 

why would u say ls6 intake manifold on a 4.8L?unless ur running nitrous, a 3500+ stall, spinning to like 7000rpm with 4.10 gears

 

greg has to open his mouth. its not fair when what ur planning actually somewhat goes along those lines <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

as for the belts though, what would cause the belts to need to be rerouted. the fuel system is pretty easy to understand i just cant see the other. then again im runnin on like 3 hours sleep <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

<small>[ December 02, 2002, 08:30 PM: Message edited by: really slow truck ]</small>

 

The main upper idler pulley would be about 1 1/2" too high and would obstruct the TB/intake. The LS6 manifold sits substantially lower.

 

gotcha, thanks