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Joined: Nov 2007
Posts: 47,276 Likes: 15
Campfire 'Bwana
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OP
Campfire 'Bwana
Joined: Nov 2007
Posts: 47,276 Likes: 15 |
for a 5.3ls in my truck. I finally got around to pulling off the heads, 2 broken lifters 1 whole one down in the oil pan, and the roller off this one in the pan also. A member here sent me a stock camshaft, but I will pull the motor out and replace the bearings and rings so maybe a new cam. The cylinder walls show no noticeable wear so I'm hoping I'll only have to hone it. I haven't built a Chevy engine since I was a Teen in high school.
God bless Texas----------------------- Old 300 I will remain what i am until the day I die- A HUNTER......Sitting Bull Its not how you pick the booger.. but where you put it !! Roger V Hunter
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Joined: Nov 2004
Posts: 10,704 Likes: 1
Campfire Outfitter
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Campfire Outfitter
Joined: Nov 2004
Posts: 10,704 Likes: 1 |
232/240 .595/.607 112 LSA
Make it thump and bounce. lol
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Joined: Jul 2001
Posts: 10,911 Likes: 8
Campfire Outfitter
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Campfire Outfitter
Joined: Jul 2001
Posts: 10,911 Likes: 8 |
I think on one engine I used a 327 350 HP cam, on a ford I used what they called an RV grind.
Been a long time since I did any rebuilds.
"The 375HH is the greatest level of power you can get for the investment in recoil." (JJHack) 79s and losttrail, biggest waste of air.
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Joined: Jun 2019
Posts: 10,070 Likes: 13
Campfire Outfitter
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Campfire Outfitter
Joined: Jun 2019
Posts: 10,070 Likes: 13 |
What's the intended use- - - -racing, trailer towing, general transportation, or a combination of several of them? In very general terms, any cam with much over a 270 degree "advertised" duration will have a nasty idle lope and very little low end pulling power. The biggest mistakes most engine builders make is "too much cam" and too much carburetor / fuel system. Doing race engine stuff on a street vehicle is stupid squared!
Check out the Comp Cams "High Energy" series of cams, but stay away from anything above the 268H.
Ignorance can be fixed. Stupid is forever!
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Joined: Nov 2007
Posts: 47,276 Likes: 15
Campfire 'Bwana
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OP
Campfire 'Bwana
Joined: Nov 2007
Posts: 47,276 Likes: 15 |
What's the intended use- - - -racing, trailer towing, general transportation, or a combination of several of them? In very general terms, any cam with much over a 270 degree "advertised" duration will have a nasty idle lope and very little low end pulling power. The biggest mistakes most engine builders make is "too much cam" and too much carburetor / fuel system. Doing race engine stuff on a street vehicle is stupid squared!
Check out the Comp Cams "High Energy" series of cams, but stay away from anything above the 268H. Just every day driving, for the most part, pull a 12ft trailer once in a while.
God bless Texas----------------------- Old 300 I will remain what i am until the day I die- A HUNTER......Sitting Bull Its not how you pick the booger.. but where you put it !! Roger V Hunter
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Joined: Oct 2021
Posts: 11,015 Likes: 6
Campfire Outfitter
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Campfire Outfitter
Joined: Oct 2021
Posts: 11,015 Likes: 6 |
Summit has what you want. Tell them what you have, what you want to do with it and know what your compression ratio is.
They’ll fix you up.
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Joined: Apr 2020
Posts: 103
Campfire Member
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Campfire Member
Joined: Apr 2020
Posts: 103 |
Call the Comp Cams tech line with your engine size, comp ratio, truck weight, intended use, transmission, final drive ratio. They will give you the part number(s) for your application.
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Joined: Jul 2011
Posts: 6,190 Likes: 2
Campfire Tracker
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Campfire Tracker
Joined: Jul 2011
Posts: 6,190 Likes: 2 |
In the olden days Edelbrock had a matched RV cam and intake. I don't know what you use on todays injected cars and trucks. The advice to call the companies tech line is a good one. are you able to do some kind of AFM delete?
Fight fire, save lives, laugh in the face of danger.
Stupid always finds a way.
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Joined: Aug 2023
Posts: 1,977 Likes: 6
Campfire Regular
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Campfire Regular
Joined: Aug 2023
Posts: 1,977 Likes: 6 |
I doubt you need more cam, and i doubt it'll run right with a stock computer. A stock 5.3 is dangerous in a short bed square body. I know because I borrowed my son's for a month. In a full size it's plenty of engine for daily driving and towing a 12ft trailer once in a while. I know, because that's what my son does with his to save gas money and leave Big Green parked.
That said, he's working on a 6.0 for Ol' Rosey, and I'm not gonna say a word. When he's done I get that 5.3 to swap into my '84 Monte SS.
I prefer peace. But if trouble must come, let it come in my time, so that my children may live in peace. ~~ Thomas Paine
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Joined: Oct 2006
Posts: 24,740 Likes: 29
Campfire Ranger
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Campfire Ranger
Joined: Oct 2006
Posts: 24,740 Likes: 29 |
PRESIDENT TRUMP 2024/2028 !!!!!!!!!!
Posted by Bristoe The people wringing their hands over Trump's rhetoric don't know what time it is in America.
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Joined: Sep 2004
Posts: 5,683 Likes: 4
Campfire Tracker
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Campfire Tracker
Joined: Sep 2004
Posts: 5,683 Likes: 4 |
Ass mentioned above call the tech line for the cam company of your choice. they'll ask what they need to know to get you the cam you need.
My son used to have a nice 2004 regular cab SWB chevy with 5.3 Auto and 3:42 posi. He had electric fans installed, cold air intake, a set of long tube headers got rid of the cats. Then had it tuned with laptop. No internal engine changes. That truck would run like it had 350 plus HP 350 in it.
Figures don't lie, But Liars figure Assumption is the mother of mistakes
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Joined: Jun 2004
Posts: 44,918 Likes: 14
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 44,918 Likes: 14 |
I can't stand that old cam descriptor.
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Joined: Nov 2007
Posts: 47,276 Likes: 15
Campfire 'Bwana
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OP
Campfire 'Bwana
Joined: Nov 2007
Posts: 47,276 Likes: 15 |
that's what I'm looking for.
God bless Texas----------------------- Old 300 I will remain what i am until the day I die- A HUNTER......Sitting Bull Its not how you pick the booger.. but where you put it !! Roger V Hunter
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Joined: Aug 2010
Posts: 28,559 Likes: 9
Campfire Ranger
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Campfire Ranger
Joined: Aug 2010
Posts: 28,559 Likes: 9 |
Put a racing cam and 3” flowmasters
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Joined: Aug 2010
Posts: 28,559 Likes: 9
Campfire Ranger
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Campfire Ranger
Joined: Aug 2010
Posts: 28,559 Likes: 9 |
And these
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Joined: Nov 2007
Posts: 47,276 Likes: 15
Campfire 'Bwana
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OP
Campfire 'Bwana
Joined: Nov 2007
Posts: 47,276 Likes: 15 |
God bless Texas----------------------- Old 300 I will remain what i am until the day I die- A HUNTER......Sitting Bull Its not how you pick the booger.. but where you put it !! Roger V Hunter
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Joined: Mar 2021
Posts: 2,490 Likes: 6
Campfire Regular
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Campfire Regular
Joined: Mar 2021
Posts: 2,490 Likes: 6 |
I can't stand that old cam descriptor. coined by Ed Winfield in the days of the Model T...
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Joined: Jun 2004
Posts: 44,918 Likes: 14
Campfire 'Bwana
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Campfire 'Bwana
Joined: Jun 2004
Posts: 44,918 Likes: 14 |
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Joined: Mar 2021
Posts: 2,490 Likes: 6
Campfire Regular
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Campfire Regular
Joined: Mar 2021
Posts: 2,490 Likes: 6 |
that's what I'm looking for. that cam looks about perfect for your truck... about the same as a 206/210 (@.050 lift) would'a been in an ol school flat tappet in a gen 1 350, but with more LSA (114) for a bit more top end, and to the keep the emission tuning parameters in the ECM happy...
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