duke250

iTrader: (2)

I have a c10 with a 5.3 in it with 862 heads. Prior to me purchasing the truck it was dynoed and made 247hp and 276 lbs of tq. It drives great but I want more power and since this truck is only a street truck/ cruiser I figured I would concentrate more on tq. So I bought some bare 799 heads and I have a new jegs cam 228/230 .585/.585 112. My question is i would like to add a point of compression and go from 9.5 to 10.5 but I think that might be a little bit of a stretch so should I mill the 799 heads to get the same CC's or a little less and use a thinner head to try to get my 10.5?

98CayenneT/A

What do you think will be a stretch ?

Mill the heads .010" and run a .040" head gasket should get ya there

tech@WS6store

iTrader: (2)

We have flat top pistons that will drop right in to get you what you want.
And a wide array if truck cams as well.
Watch those 862 heads though. Most have a notch on the deck. IF they do we have mls gaskets for that but only in .051 compressed.
Anything else you need, let us know!
You can mill down the 799s to .020 to get a 61cc chamber and bring cr up also.

duke250

iTrader: (2)

I figured getting to 10.5:1 might be a stretch and not run into PTV issues. You think mill the heads .10 and go with a .40 gasket would do it? I couldn't find any .40 gaskets for the 5.3. thanks for the info tech@ws6store but I'm going to leave the engine in the truck for this swap so I'm not messing with the short block right now but I have a 6.0 that needs and overbore that I will probably give you guys a call about for a rebuild.

tech@WS6store

iTrader: (2)

Mill heads .020 and use a stock head gasket is what i would do in that case. Youll have to measure for prs if you mill past .010 i believe or use a thinner gasket

omc8

iTrader: (7)

That cam is a bit big for a 5.3 , you'd be better off if running little smaller duration

duke250

iTrader: (2)

well i just looked in my garage at the box with the cam in it and its 283/286 .585/.585 112 so it has more duration then i thought so maybe its not such a good cam for what i want to do. what would you guys suggest for my goals of more torque and a bump in compression? maybe get a new cam and just use a thinner head gasket with my 862s. or i could use this cam and just leave the 799 heads alone and just put springs on them.

tech@WS6store

iTrader: (2)

Those cam specs dont seem correct. You likely read the advertised duration not @.050. based off those adv durations i would expect it to be in the 230s range though which is still big for a 5.3.

duke250

iTrader: (2)

Yup your right lol it's 228/230

gagliano7

With a 58 cc chamber you will be at 10:1 with a stock gasket. I have a 5.3 tsp 5.3 heads 58cc chamber with a 222/226 .600 lift 115+3 cam in a 1992 c1500 5 speed manual. I had a 212/218 113+4 .530 lift before this cam. I have no #'s to back my thoughts up but the 212/218 felt stronger. Both cams drive great and idle great. The bigger cam does have more lope but the 212/218 cam had some lope to. If i wasn't building a 6.0 to replace the 5.3 i would put the 212/218 cam back in. I figured i would give you my experience with a similar truck.

duke250

iTrader: (2)

Thanks I appreciate the feedback. I'm thinking of just milling my 862s .10 and putting 2.00 intake valves in it and using a stock gasket and installing the 228/230 cam I have. I have a have a 6.0 that needs a rebuild but I was saving that for another project and I'm trying to avoid taking the engine of this truck but in the end it doesn't matter if I take it out or not I guess

JoeNova

Nothing wrong with that cam, it just won't me a torque monster like you were hoping.

duke250

iTrader: (2)

So what would you guys recommend for a good torque cam. I'm open to using this cam in the lq4 I'm rebuilding and getting a different cam for this truck. I know everyone will probably bash me but I want a nice lumpy sound too. This truck is for cruising and going to the car shows with the kids and my son loves a lumpy cam lol

duke250

iTrader: (2)

i have been reading a lot about cams on here with the stickies and its awesome information but now i feel i'm overthinking cam selection or im probably just more confused then ever lol

tech@WS6store

iTrader: (2)

Any cam larger than a 224 on a 5.3l will warrant a stall. keep that in mind.

cookseyb

Send those 862's to Texas Speed and let them rework them then get a cam suggestion from them, they grind their own cams so they can custom grind one to fit your needs

duke250

iTrader: (2)

The Texas speed head service is great but I don't want to spend 1k on this setup. I was just looking to raise compression and either get a cam built for torque or use the cam I have but if the cam I have needs a stall converter and everything then it's probably a good idea to get a cam better suited for torque production and works with the factory 4l80e converter I'm going to put in. The pupose of this truck is a nice cruiser with a lumpy sound. I'm going to drive it quite a bit in the nice weather if it ever gets above freezing here in NY lol

tech@WS6store

iTrader: (2)

Dont mill the 862s. Do put the larger valves in. Wr have a great pric on new stock 2.000 valves OR you can upgrade to 2.000/1.571 stainless exhaust and gain some flow for $199.
Id look at our high lift hot cam actually. Would still have a nice rumble at idle but use stock converter. its a 218/227 .600/.600 112 lsa. Cam and springs are $515 shipped.
Above that the tsp 224r would prob be the limit i would go.

Tuskyz28

It's go be hard to make a stock cube 5.3 a torque monster you looking for... you'l be better off investing in a roots style supercharger or going to a 6.0 or stroking your 5.3 to a 383ci.