Streeters: Any regrets changing cams? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Pillow · 01-09-2014, 05:42 PM

I have been pondering what to do with my 5.3 LS engine camshaft wise. This will be for a streeter with some towing and some loads in the bed... You know doing truck things

This will be a carb conversion with Edelbrock RPM dual plane mated to a 5 speed.

... Keep the stock LM7 cam for bottom end? Or give it the free 50HP up top with a LS6/LS2 cam?

Any insight is appreciated! This has been giving me mental fits for the last two weeks, so i thought I would share with you all

Thanks!!!

BR3W CITY · 01-09-2014, 06:15 PM

Id go with a non stock cam either way to take advantsge of the top end that the manifold and carb are going to net u. The truck cams will run out of breath before you get the full gains from that setup.

68GMCCustom · 01-09-2014, 09:54 PM

my 6.0 is a tad bigger but my .223/.231@.050 dur., .610/617 lift, 112LSA performed great when the motor was carb'd with a GMPP LSX/LS3 dual plane intake. Lots of power yet still snappy down low.

Blackpony · 01-09-2014, 11:48 PM

My only regret is going with too small of a cam. 215/223 .600 lift cam just isn't enough. No chop, power drops off early

softballnrd27 · 01-09-2014, 11:56 PM

You will be better off to get a cam spec'd for your specific combo. The dual plane/single plane intake combos like less lobe seperation than their fuel injected counterparts

01-09-2014, 05:42 PM	#1
Pillow Registered User Join Date: Apr 2006 Location: Warrenton VA Posts: 144	Streeters: Any regrets changing cams? I have been pondering what to do with my 5.3 LS engine camshaft wise. This will be for a streeter with some towing and some loads in the bed... You know doing truck things This will be a carb conversion with Edelbrock RPM dual plane mated to a 5 speed. ... Keep the stock LM7 cam for bottom end? Or give it the free 50HP up top with a LS6/LS2 cam? Any insight is appreciated! This has been giving me mental fits for the last two weeks, so i thought I would share with you all Thanks!!! __________________ '71 C-10 with 5.3 LS2 cam & NWC T5 - Patina King! '83 Jeep Cherokee w 5.3 LS9 cam & SM465 NP208 swap in progress '92 Volvo 960 wagon w 5.3 LS7 cam & WC T5 swap in progress '79 Porsche 911 SC '48 Spartan Mansion 30' travel trailer '10 Porsche Cayenne S - Daily

01-09-2014, 06:15 PM	#2
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Streeters: Any regrets changing cams? Id go with a non stock cam either way to take advantsge of the top end that the manifold and carb are going to net u. The truck cams will run out of breath before you get the full gains from that setup. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

01-09-2014, 09:54 PM	#3
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: Streeters: Any regrets changing cams? my 6.0 is a tad bigger but my .223/.231@.050 dur., .610/617 lift, 112LSA performed great when the motor was carb'd with a GMPP LSX/LS3 dual plane intake. Lots of power yet still snappy down low. __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

01-09-2014, 11:48 PM	#4
Blackpony Registered User Join Date: Feb 2013 Location: Aubrey, TX Posts: 308	Re: Streeters: Any regrets changing cams? My only regret is going with too small of a cam. 215/223 .600 lift cam just isn't enough. No chop, power drops off early

01-09-2014, 11:56 PM	#5
softballnrd27 Always a work in progress Join Date: Jun 2007 Location: Harker Heights, TX Posts: 1,599	Re: Streeters: Any regrets changing cams? You will be better off to get a cam spec'd for your specific combo. The dual plane/single plane intake combos like less lobe seperation than their fuel injected counterparts __________________ USMC Retired Never trust a man who can't laugh at his own fart! 2010 Silverado Crew Cab 73 SWB 5.3/4l80e Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=695168

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