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Old 09-10-2011, 10:00 PM   #1
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Default 5.3 cam choice

I just got a 5.3 LM7 out of an 04 Silverado and Im looking for a cam. Im building a carbed motor that is going into a S10. The truck is a street truck but I like a choppy idle but something that is still driveable. These are the cams I found so far so let me know what you think will be the best and if I will have to do any mods for it (springs ect.)

- 212 intake 218 exhaust @ .50, 551 551 Lift on 114 LSA

- 03 LS6 Vet Cam

- Intake- 196 degrees of duration at .050" with .467" of Max Valve Lift.
Exhaust- 201 degrees of duration at .050" with .479" of Max Valve Lift

Any other suggestions on a cam choice?
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Old 09-11-2011, 07:45 AM   #2
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I would look at some of the EPS cams from Engine Power Systems for 5.3s and talk to Geoff Skinner there.
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Old 09-11-2011, 08:27 AM   #3
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From Lunati

60519** 2400 - 6800 CAMSHAFT, GM LS VHRX278-08CX 278/282 227/231 .651/.651 108/108

60520** 2800 - 7000 CAMSHAFT, GM LS VHRX286-08CX 286/294 235/243 .651/.651 108/108

60521** 3200 - 7200 CAMSHAFT, GM LS VHRX298-08CX 298/306 247/255 .651/.651 108/108

60522** 3600 - 7500 CAMSHAFT, GM LS VHRX306-08CX 306/314 255/263 .651/.651 108/108
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Old 09-11-2011, 01:30 PM   #4
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any cam you choose is going to need new springs and pushrods.

a tr220 seems to be a popular cam on the truck boards. But depending on weight you could go a little bigger.

is the vehicle an auto? torque converter is another thing to consider. i wouldnt run any cam with a stock converter.
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Old 09-11-2011, 06:24 PM   #5
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Yeah the truck has a 700r4 with a 2800 stall converter. Its right around 3000 lbs.

Now when you say I need to replace the push rods, do you mean with a more heavy duty rod or a different length depending on lift and rocker ratio? I'm staying with the stock 1.7 rockers if that helps.
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Old 09-11-2011, 11:45 PM   #6
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You'll need hardened pushrods. Length to be measured once cam installed, could be different length depending on cam's base circle.
This is what I recommend:

224/230 .581/.590 111+2 LSA
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Old 09-12-2011, 01:09 AM   #7
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TR224 or 224r gets my vote.
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Old 09-12-2011, 01:14 AM   #8
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LS6 cam can be had cheap and sounds good in a 5.3 buddy had one in his whippled 5.3 72 jimmy
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Old 09-12-2011, 03:38 AM   #9
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Quote:
Originally Posted by 01ssreda4 View Post
TR224 or 224r gets my vote.
+1

best cam I ever owned on stock cubes.
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