I'm sure this mod has been done, just a refresh if some of you guys missed it.

Just wanted to share the gains on my father-in-laws truck after the cam install.

It's a '99 5.3L ext, and it is a completely stock engine and has 105Kmiles, does have a flowmaster though.
This truck ran a 16.8 in the 1/4 mile, after tuning it came down to a 16.1.

The mod I'm posting about is the ls1 cam we just installed. Since these cams are so abundant and ppl are pretty much giving them away, we figured why not install one and see how it works out. No springs to install and the cam installation takes about 2 hrs. Most say to support the lifters, but we chanced it and they stayed up.
btw, we also installed a k&n filter.

The low end seems to still be there and the high end is very noticable.

So what kind of gains does this mean.
Last night at baytown, he went from a 16.1 to a 15.54, I think that is a badass gain for the money. (the cam cost 0$).
We still haven't tuned for the ls1 cam, so he's shifting kind of low, seems to be more in there, maybe up to 6200rpms.

For those who have a few hours to install a stock ls1 cam and want a decent gain, go for it. Some say, why not do the ls6 cam, well, you have to buy springs too and that adds to the labor. Plus , the ls6 cam likes high rpms, so uping the shifts would def. be needed to take full advantage of the cam.
Plus the ls6 cam and springs are a lot more than just the ls1 cam.

just an fyi for those thinking about it.

later,

allen

 

Wow... 6/10 of a sec..... I know davidmtz was wondering about this since his causin witha 99 chevy wanted to put an ls1 cam in there.

 

hey file is this the same cam i ordered for my cousin

 

good results, i guess i should be in the 13s with one then. what year cam?

 

YesSur... Probably the best $25 he will ever spend in his truck.

 

It's the same cam that's in the lq9 and ls1:

2003 LQ4 12561721 0.479 0.467 207 196 116 117/115
2001 LS1 F-car 12561721 0.479 0.467 207 196 116 117/115

Good luck on your time, it's much easier to go from a 16 to a 15sec than from a 14 to a 13sec.

I just wanted to let you guys know, for you stock 5.3's out there, it's a decent upgrade.

allen

 

Don't the '00+'s already have an updated cam? I thought that was part of the reason for the hp rating change from 99-00. Wonder if this would still work.

 

i was thinking of using the 98-00 cam which is 198/209 .500/.500 119.5. on my 02. and my 5.3
is stock except the fipk and catback.

 

that's the cam i have in mine, seems to be running ok, of course i don't have anything else to compare it to, that's been the only cam in mine,

it should work out nice, give it a try,

allen

 

Yeah, I remember you telling me about a cheap cam upgrade a while back that was planned. Hell I don't have much to do over Dec, maybe I will stick a stock LS1/6.0 cam in there...