If you ever want to change the cam in a LS motor.... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jemo · 11-18-2011, 12:25 AM

I did it this weekend and it was easy, easy. I've never done a cam swap before but just followed the instructions here:

http://www.ls1howto.com/index.php?article=23

Follow them exactly and get the recommended longer crank bolt - you definitely need it for removing the crank pulley and putting it back on. Other tips:

Buy one stock crank pulley bolt for your motor from dealer

Buy the longer crank pulley from the dealer. I don't know the part # but it's out of a LS7 7.0L Corvette. 125 mm long. The stock bolt is 103 mm.

To keep the lifters from falling, use the Russian Roulette method he describes in the link but then insert a long piece of 1/4" brake line in the two holes on the front of the engine. Works as well as the $100 rods that do the same thing for a lot less money.

Unfortunately for the valve springs, I tried to use the rental tool from the parts store but it was no help. I bought the $100 Comp Cams tool and it's worth it's weight in gold. it does 2 springs at once so it goes quickly and it's for an LS motor so it works.

Take your time!

Jeff

**LEEVON** · 11-18-2011, 12:37 AM

what do you want for the comp valvespring tool? I have a custom made tool but it does one valve at a time and I don't like how it seats...

Jemo · 11-18-2011, 01:03 AM

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OldJimmy57 · 11-18-2011, 01:12 AM

Ah a fellow Dallas Texas member

Slowtruk · 11-18-2011, 01:17 AM

You are right, doing anything to the LS style engine is easy. Just not easy to tear them up. They are some well designed engines

11-18-2011, 12:25 AM	#1
Jemo Registered User Join Date: Nov 2009 Location: Dallas, TX Posts: 148	If you ever want to change the cam in a LS motor.... I did it this weekend and it was easy, easy. I've never done a cam swap before but just followed the instructions here: http://www.ls1howto.com/index.php?article=23 Follow them exactly and get the recommended longer crank bolt - you definitely need it for removing the crank pulley and putting it back on. Other tips: Buy one stock crank pulley bolt for your motor from dealer Buy the longer crank pulley from the dealer. I don't know the part # but it's out of a LS7 7.0L Corvette. 125 mm long. The stock bolt is 103 mm. To keep the lifters from falling, use the Russian Roulette method he describes in the link but then insert a long piece of 1/4" brake line in the two holes on the front of the engine. Works as well as the $100 rods that do the same thing for a lot less money. Unfortunately for the valve springs, I tried to use the rental tool from the parts store but it was no help. I bought the $100 Comp Cams tool and it's worth it's weight in gold. it does 2 springs at once so it goes quickly and it's for an LS motor so it works. Take your time! Jeff __________________ '59 Big Window Fleetside Last edited by truckdude239; 11-18-2011 at 07:55 PM.

11-18-2011, 12:37 AM	#2
LEEVON Moderator Join Date: Jul 2006 Location: Ozark, MO Posts: 4,888	Re: If you ever want to change the cam in a LS motor.... what do you want for the comp valvespring tool? I have a custom made tool but it does one valve at a time and I don't like how it seats... __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids

11-18-2011, 01:03 AM	#3
Jemo Registered User Join Date: Nov 2009 Location: Dallas, TX Posts: 148	Re: If you ever want to change the cam in a LS motor.... Please note that you must be a supporting member to post classified items. This includes but is not limited to What Its Worth, Want To Buy, Want To Trade, and For Sale. Please consider supporting the forum by subscribing. Further information on the subscription levels available are located here If you need any further assistance with that please contact any Admin for help. __________________ '59 Big Window Fleetside Last edited by truckdude239; 11-18-2011 at 07:55 PM.

11-18-2011, 01:12 AM	#4
OldJimmy57 Registered User Join Date: Jun 2004 Location: mesquite texas Posts: 143	Re: If you ever want to change the cam in a LS motor.... Ah a fellow Dallas Texas member __________________ http://67-72chevytrucks.com/vboard/showthread.php3?t=145432

11-18-2011, 01:17 AM	#5
Slowtruk Registered User Join Date: Aug 2011 Location: Lumberton Texas Posts: 378	Re: If you ever want to change the cam in a LS motor.... You are right, doing anything to the LS style engine is easy. Just not easy to tear them up. They are some well designed engines __________________ IBEW Electrician-Nick 1985 C20 Silverado 1965 C-10 short fleet 1961 c-10 Apache short fleet 2005 Chevy Suburban LT 2012 Hyundai Sonata



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