Thinkin about getting a cam

[Zembonez]

Scotty.

If you really want to do this, pick up a JY mid mile 5.3 engine and do your mods to it - then just do an engine swap. They aren't terribly expensive used because they are everywhere and they rarely fail... If you do go with headers, long tubes are the only way to go on these engines. Shorty headers are a waste of money.

 

[CJ Hungus]

Or is there any other bolt ons that will net me mo-powah besides doing a cam swap?

I think you need to go read over on pt.net for a while. There are plenty of threads for beginner bolt ons.

 

[Zembonez]

I'd start with something that didn't weigh 6500 pounds.

 

[63chevystepside]

You don't need headers you won't flow enough cfm to justify getting them and stock exhaust in your case would help with lo end torque. When you replace the cam you have to do the lifters and id strongly suggest a double roller chain. You could go with a lunti cam that has no more than a 470 lift because stock rockers max out at 470-could get some long slot 1.5 rockers(60.00) and go up to max 480 lift anything past that and you will have to change your springs-i recommend the lunti cam because it will give you good low-mid-top end and is easier on your valve train. When you do take it apart-make sure its dot to dot on the chain with the rotor pointing at number 6(not 1) or you be 180 out. Heads don't have to come off but let me ask you do you use oil? or have smoke out the pipe? If so you need to determine if its rings-vavles seat...and if its your valves then have your heads done just when you put your heads on make sure you do it in torque sequence called for and you use some indian head gasket on the head bolts before putting in head bolts an torqueing or it will leak. Stock exhaust will flow up to 600cfm and unless your running that or more putting headers on won't help. Hope this helps...anyone correct me if i was wrong. And if you do do this on pulling the balancer don't use a shape edged fitting to mate with the cranks crank bolt bolt-or it will split crank-use something flat.

When did LUNATI start making cams for the 5.3?

Well to be honest i don't know whether they do or don't---i didn't know anything but that he was considering a cam swap. If not LUNATI Then that-that what will work for his engine...within the guidelines of said mechanics of his engine---i was referring to Chevy. But he could get a regrind cam with LUNATI cam specs-id think? You tell me-glad you caught that if im mistaken

 

[63chevystepside]

Lunati makes ls cams. And yes headers will make a difference.

In what way-good or bad? Yea if he goes all out rebuilding it but if just something like a rv cam school me how?

 

[CJ Hungus]

Lunati makes ls cams. And yes headers will make a difference.

In what way-good or bad? Yea if he goes all out rebuilding it but if just something like a rv cam school me how?

In a good way. Long tube headers on a mostly stock 5.3 will net about 20 HP. These ls engines respond well to simple mods.

 

[63chevystepside]

Or is there any other bolt ons that will net me mo-powah besides doing a cam swap?

Id say yes but i don't know your set up-underdriven pullys-cold ram air intake-lower degree theromostate-electric fan instead of reg. fan-electric fuel pump instead of manual....there is always something you can do to go faster-well at least to a point-but if your getting a clicking noise and been there awhile-sounds like a lifter-you ought to replace that and be gently on her til you do. But hey listen to this other guys they are gurus-im just ol school shade tree.

 

[63chevystepside]

Lunati makes ls cams. And yes headers will make a difference.

In what way-good or bad? Yea if he goes all out rebuilding it but if just something like a rv cam school me how?

In a good way. Long tube headers on a mostly stock 5.3 will net about 20 HP. These ls engines respond well to simple mods.

Yes in the higher rpm but what about the low end? That gain in top end is it worth the grut he will lose in the bottm end in which he is after?

 

[63chevystepside]

I'd start with something that didn't weigh 6500 pounds.

He is right 6500lbs is alot harder to get going-you'll need twice the hp compared to a 3250lb vehicle. But it can be done-now where talking big block turbo nos supercharger an such.

 

[daddy]

I'd start with something that didn't weigh 6500 pounds.