Xtreme 4x4 X4270H Cam

[littleryno32]

Is anybody using this cam in a sbc looking to build new engine wondering what to use? Any help would be great. Thanks

 

[Hogback Fabrication]

It all depends on what size sbc, what heads you are using, and what the vehicle will be used for. If it is on a 350 and will be used in a truck for good all around power, that is probably a decent choice.

 

[littleryno32]

1980 blazer 350 sb

 

[littleryno32]

Stock heads

 

[Hogback Fabrication]

Go for it

 

[yoshisv]

Im using a XE262 on a TBI350 with bumped compression and stock heads. It has great off idle torque and throttle response. Also has a noticeable idle.

 

[littlejimmythatcould]

I'm using the 262H-11 and it's a pretty good cam with a steep power band, I like it, and hope when I move up in axle gears it will help put me higher up in it's power band. The advertised powerband on it is 1300-5600 but it never goes above 3600 rpm unless I was to totally wind out the motor. When it becomes a 'trail only' rig I will probably move up to the cam that your looking at. It also has a pretty noticable idle. If you get that cam let me know how it works out for ya.

 

[Smitty]

Is anybody using this cam in a sbc looking to build new engine wondering what to use? Any help would be great. Thanks

I'm running this cam in my 56. My engine is a 383 with almost 10:1 compression and aluminum heads. The idle is rough as would be expected with this grind, but not so bad that the truck isn't streetable. The engine pulls strong but I haven't had it on a dyno yet for a fine tune and power check. I'm happy with the cam for now, but will probably go to a milder grind sometime down the road. If I'm not happy with something milder, then I can always put this one back in.

 

[RootBreaker]

should be a good strong cam.... do you want that much cam?

I went with Xtreme 4x4 X4260HR
that one is a hyd roller.. but I wanted power from ide and up.... I like it so far.. havent got the truck out yet as wife is expecting in 2.5 weeks

 

[littleryno32]

Thanks for the info !!! Just found out my block is 60 over with headers. Still looking for heads my heads didnt match

 

[littleryno32]

Does anybody have vac. problems

 

[Smitty]

Does anybody have vac. problems

I was worried about the vacuum. I went ahead and installed a hydroboost brake system before I put the engine in the truck. I also run a vacuum gauge and it reads around 17" at idle, so no problems there.

 

[littleryno32]

what size stall do you run?

 

[yoshisv]

Does anybody have vac. problems

Mine does not have any with the XE262

 

[littleryno32]

im thinking i may just use the xe626

 

[littleryno32]

opps ex262

 

[POWERMAD]

I've been running a Rhodes Hydra-solid cam for over a year and have been real happy with it.
Good low, mid and top end power. Pulls 19" of vaccume at idle.