ALL,

I am looking to beefing up my 5.3 engine. I am looking at one of these cam combo kits. Please help me determine which kit is the best bang for the buck. This will be in a GMC Typhoon, the heads will be stock.

I would like to know what HP gains could be achieved with these kits, and if the prices are good for the product I am getting. Thanks in advance


COA1
-54-450-11 CAMSHAFT (271124476224 $1069.88)
cam specs .513/.520@115 LSA
-850-16 OE STYLE HYDRAULIC ROLLER LIFTERS
-3158KT Timing Chain Set
-26915-16 Valve Springs
-774-16 Retainers
-623-16 Valve Locks
-511-16 Valve Seals
-4705-16 Spring I.D. Locators
-7638-16 Magnum Pushrods
-Instructions
-Assembly Lube

COA2
-54-451-11 CAMSHAFT (300875545672 $1069.88)
cam spec .554/.558@115 LSA
-850-16 OE STYLE HYDRAULIC ROLLER LIFTERS
-3158KT Timing Chain Set
-26915-16 Valve Springs
-774-16 Retainers
-623-16 Valve Locks
-511-16 Valve Seals
-4705-16 Spring I.D. Locators
-7638-16 Magnum Pushrods
-Instructions
-Assembly Lube

COA 3

-54-458-11 CAMSHAFT (390393412408 $1069.88)
cam spec .614/.621@113 LSA
-850-16 OE STYLE HYDRAULIC ROLLER LIFTERS
-3158KT Timing Chain Set
-26915-16 Valve Springs
-774-16 Retainers
-623-16 Valve Locks
-511-16 Valve Seals
-4705-16 Spring I.D. Locators
-7638-16 Magnum Pushrods
-Instructions
-Assembly Lube

 

You didn't list duration. The first two listed are baby cams and then you throw in a bigger one.

These two would be my pick, the 212/218 low lift or high lift, if this is a street driven daily driver.

54-412-11 - XFI RPM Hydraulic Roller Camshafts
54-424-11 - XFI RPM High Lift Hydraulic Roller Camshafts

 

It will be a street rode with highway use, occasional track or street racing

 

Here are the durations
208/212 on cam 451-11
206/212 on cam 450-11
227/253 on cam 458-11

 

220/220 for that small of a truck, maybe a little bigger

 

Well you should forget about the last one.

 

I agree, throw the last one out. I would throw the first two out too and go a little bigger. It depends on your goals and whether you plan on getting a higher stall converter. The two cams I listed are about as big as you can get and still keep the stock converter. If you get the Comp Cams low lift, then you can use cheaper LS6 springs. If you want a bit more lope at idle (lower LSA), definitely look at the SDPC HT1 truck cam (214/218 .559/.562 111).

 

I am okay with installing a newt tq-converter. I want a radical sound and good performance, with the ability to drive from Memphis to Tampa

 

You keeping the LS Typhoon AWD?

 

If you want the sound with decent performance, look at the Thumpr cams.