I have a set of ported 5.3 heads and am trying to figure out a good combonation. I was thinking of running the texas speed and performance 228r cam, has anyone had good luck with this type of combonation, if so are new fuel injectors required.

 

it is possible u might need new injectors.. just depends what your DC is at... i have worked 5.3 heads and running the 228/228/ 588 588 112 and it works gggggrreat.

 

Plan on running a 3600+ converter with that cam.

And I would say new fuel injectors will be necessary.

 

im have been running a yank 3500 for a lil over 4 years... but want to eventually go with a bigger stall.. like a 3800 or 4000

 

What headwork did you have done, and on what heads? Did you do the headwork before or after the cam?

 

I do believe the cam came before the head work. Could be wrong though.

 

the heads i don't remember the casting numbers but they came off a 5.3 that i just had lying around. My local machine shop will be installing 2.0 intake valves and doing a full port job. I don't remember the exact flow numbers but we just played with them for a while and flowed them with stock valves. The reason I am thinking about going with the 228r is i just really want a radical sounding idle and of course the added power. I am getting a custom converter made i was looking at around 3400 but i guess i will need a bit more. the engine in the truck is completely stock except for bolt ons this is my winter project hoping to have everything done by april. Just how high am i going to have to rev the engine with the bigger cam and better flowing heads or i should say how high do most people turn them?

 

If I were to run a cam that big in a 5.3, I'd have the heads milled to yield somewhere in the neighborhood of 10.5 to 11:1 SCR, and probably a 3800-4k converter...

 

Would that cam be very streetable in a 5.3 or should i go with a smaller cam?

 

it depends on your definition of streetable

personally, for a truck that gets used as a truck, I would go smaller