cousblake11

alright im trying to pick a cam between a XR265HR-14 and XR265HR-15

which one would make more power? I want the motor to be very lopey sounding.

XR265HR-14

RPM Range: 1200-6000
Duration: 265 deg. Intake / 271 deg. Exhaust
Duration at .050": 212 deg. Intake / 218 deg. Exhaust
Valve Lift: .522" Intake / .529" Exhaust
Lobe Separation: 114 deg.

XR265HR-15

•RPM Range: 1400-6700
•Advertised Duration (IN/EX): .265" / .271"
•Duration @ .050" (IN/EX): .212" / .218"
•Valve Lift w/1.7 Ratio Roller Rockers (IN/EX): .558" / .563"
•LSA: 115°

I was gonna go ahead and buy the 15 but I wanted to know which would sound and run better in a brand new rebuilt 5.3l

batboy

iTrader: (6)

Neither will have much lope at all. The 114 LSA cam might have a tiny bit more. If you want more lope, get the HT1 SDPC LSX Truck Cam (214/218 .559/.562 111).

https://sdparts.com/details/scoggin-...er/cc54-st1-11

Bama2door

212/218 on a 112 is a good one a lot of people on here are happy with

cousblake11

So how would I go about getting a cam with 212/218 with 112 LSA? they don't sell them from Comp, would I buy the XR265HR-15 and take it to a machine shop or somethin? I found a kit with that cam, springs, timing gears and chain, and lifters $1100 so if I got it could I just get that cam worked on in a machine shop and still be able to use the rest of the parts the kit comes with?

1FastBrick

iTrader: (17)

No, You order a custom one that is ground that way. A custom cam does not cost any more through most places. It just takes longer to get since its not on the shelf ready to go.

To change the LSA they have to remove a lot of material and that will effectively make it a much smaller cam.

Also not just any machine shop can grind a cam. You need a cam grinding machine to do this and some one with alot of experience grinding cams.

Have you checked with any of our sponsors to see what they have to offer as far as packages???

marineusmc4

I have the XR269HR in my truck. love the sound of it. it is lopey and performs great.

batboy

iTrader: (6)

You really should take a look at the HT1 cam.

Txblue

iTrader: (1)

I have the sdpc ht-1 cam in my truck and love it. Has a good lope to it and performs great

Ht-1 cam 5.3 - YouTube

Ht-1 cam 5.3 - YouTube

First video is first start up open headers the second is long tube headers off road 3 inch y pipe into 50 series flowmaster