5.3 upgrades
01-13-2010, 10:45 PM
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5.3 upgrades
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. 
01-14-2010, 01:27 PM
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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.
01-14-2010, 05:47 PM
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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?
