Diverguy30

I have a 07 new body style 1500 crew cab with the 5.3. Did a compression test & one was about 25lbs lower than all others & coolant is disappering. Worst case scenario, a cracked head. If thats the case, i have a budget of just under 2,000$ to get some ported heads and figured a new cam while i have it torn apart. Im not looking for 800hp or the loudest baddest cam out there, just a little something extra than stock heads and cam that i wont have any problems with it being my daily driver. I have no idea about all the numbers except price tag. Can anyone recomend a decently priced setup? And if my stock heads arnt cracked, ill just have them ported and a new cam. Please help, im a newb!

FFDP

iTrader: (2)

Stay in the 212/218 range or similar for a cam swap, lots to choose from. That way you don't need a stall converter.

You'll need all the other parts for the AFM/DoD delete too, so valley plate, cam gear, lifters, lifter trays, bolts, gaskets etc etc.

Diverguy30

Thanks and what is the AFM/DOD delete? Like i said im really new to all of this stuff. If i get a full cam kit will it include everything i need? I just want the ported heads and cam for a few extra ponies ya know? I dont really want to do anything else until i get some long tubes. And thanks again man

FFDP

iTrader: (2)

Look up what active fuel management/displacement on demand is if you have questions on it. It all the stuff that makes it drop into 4 cylinder mode on the highway with the GEN 4 NNBS trucks.

Texas speed sells kits or you can piece it together.

Your truck should already come with 243/799 cylinder heads, they are basically the best flowing stock cylinder heads they make. Porting can help but I don't see it being a big gain when you aren't going for all out power. Mill the heads to bump compression and call it good if you want too.

Diverguy30

Oh ok, is that the flex fuel? If so, my truck doesnt have all that stuff

FFDP

iTrader: (2)

No, flex fuel and AFM/DoD is not the same. Did the google for you.

https://en.wikipedia.org/wiki/Active_Fuel_Management


It's a special system that included this valley plate with AFm/DoD solenoids and oil passages to activate the DOD lifters and make the engine shut off 4 cylinders under low load cruising to gain fuel mileage. The camshaft, lifters, lifter trays, valley plate, cam gear and other parts neeed to be replaced when upgrading to a different camshaft.

Diverguy30

Roger that. Thanks man

Formula96

Just installed the tsp stage 3 high lift in my 05 avalanche with a 5.3. 216/220 600 lift 112 lsa. Drives great even on the stock stall. I wouldn't go any smaller than that.

Camin00

I wouldn't go any bigger than the 216/220 on stock stall, and I agree with the previous comment your stock heads flow really well up to 0.600 lift. My 862 heads kinda fall on their face after 0.550 lift.

You could buy a low mile used set of 243/799 for $3-400 have them milled 0.03 for 100ish, if you want you could get 0.04 head gaskets to bump compression up even more.

You will need a push rod length checker to get the correct length of pushrods. I ordered 3 different sets when I did my cam swap over a weekend, and sent back the two sets I didnt use.

Diverguy30

Thanks for the replies fellas. Like i said im new but trying to learn