replacing camshaft
02-13-2010, 02:17 PM
#41
LS7 lifters GM 12499225 114.40 (www.gmpartsdirect.com)
Lifter trays GM 12595365 x4 5.56 (www.gmpartsdirect.com)
GM valley cover GM 12570471 83.06 (www.gmpartsdirect.com)
Camshaft gear GM 12586481 14.34 (www.gmpartsdirect.com)
Camshaft bolts GM 12556127 1.71 (www.gmpartsdirect.com)
MLS Head gaskets GM 12589226 x2 17.74 (www.gmpartsdirect.com)
Timing tensioner GM 12585997 23.62 (www.gmpartsdirect.com)
total 365.35
Crank pulley bolt ARP 234-2503 27.95 (www.summitracing.com)
Head bolt kit ARP 134-3610 113.95 (www.summitracing.com)
total 141.90
Camshaft gasket kit GM 12499228
My setup developed a tick after about a month, and I attributed it to too long of pushrods. LS7 lifters are .060" longer than their LS1 counterparts, so you'll need corresponding pushrods to account for it. LS7 lifters like a little more preload, so 7.350" is just right. I used Comp Cams part # 7637-16 from Summit. Also my list is for a setup with the older 3 bolt cams. Let me know if you have any more questions.
Lifter trays GM 12595365 x4 5.56 (www.gmpartsdirect.com)
GM valley cover GM 12570471 83.06 (www.gmpartsdirect.com)
Camshaft gear GM 12586481 14.34 (www.gmpartsdirect.com)
Camshaft bolts GM 12556127 1.71 (www.gmpartsdirect.com)
MLS Head gaskets GM 12589226 x2 17.74 (www.gmpartsdirect.com)
Timing tensioner GM 12585997 23.62 (www.gmpartsdirect.com)
total 365.35
Crank pulley bolt ARP 234-2503 27.95 (www.summitracing.com)
Head bolt kit ARP 134-3610 113.95 (www.summitracing.com)
total 141.90
Camshaft gasket kit GM 12499228
My setup developed a tick after about a month, and I attributed it to too long of pushrods. LS7 lifters are .060" longer than their LS1 counterparts, so you'll need corresponding pushrods to account for it. LS7 lifters like a little more preload, so 7.350" is just right. I used Comp Cams part # 7637-16 from Summit. Also my list is for a setup with the older 3 bolt cams. Let me know if you have any more questions.
What is the purpose of the timing chain tensioner? Do our engines already have on? (I also have an LY5 equipped silvy that' i'm going to swap cams in)
02-15-2010, 08:37 AM
#44
02-15-2010, 02:11 PM
#46
That's the first time I've seen that ls1howto site and it's really informative.
what are you guys using to compress the valve springs? would anything that works on an LS1/LS6 head work on a gen IV 5.3 as well? I've seen the More perf. one that TR sells, the crane one that is hard to find as well as some LSM racing ones that are a bit more expensive.
And what's a good tool to use to lock the flywheel when taking off the crank pulley? will any universal flywheel lock work on a 65e tranny?
sorry for all the banal questions, but this new engine tech has me a bit intimidated.
what are you guys using to compress the valve springs? would anything that works on an LS1/LS6 head work on a gen IV 5.3 as well? I've seen the More perf. one that TR sells, the crane one that is hard to find as well as some LSM racing ones that are a bit more expensive.
And what's a good tool to use to lock the flywheel when taking off the crank pulley? will any universal flywheel lock work on a 65e tranny?
sorry for all the banal questions, but this new engine tech has me a bit intimidated.
Last edited by Preston129; 02-15-2010 at 02:44 PM.
02-15-2010, 05:36 PM
#49
I think the thread was in the GM engine section, the OP had a tahoe right? Thing is i'm confident with the cam swap itself, it's just all the small things i'm worried about. Maybe I'm overthinking things before even getting started, cause it seems pretty straightforward on paper anyways.
