Timing chain question.
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11 Second Club
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From: Brooklyn Center, MN
Timing chain question. I tried to search this, but couldn't find anything. I have a new cam that I'll be installing in the spring, but want to get a new timing chain while I'm installing the cam. I'm thinking of a heavy duty LS2, but see the adjustable timing chains offered. I know how a timing chain works and syncronizes the crank to the cam, but how does an adjustable timing chain work? I know you can advance or retard the timing, but how is that accomplished? Also, not sure if this is right or not, but I see a lot of people that have a LSA that says something like 112 +4 or so on. Is this affected by the timing on the timing chain and if it is, how so? Plus, which one would you prefer?
the +4 is the advance ground into the cam. The timing chain can be adjusted at the cam side to advance or retard the cam. You dont really need it...just stick with the oem ls2 chain
Even more so, an adjustable timing chain gives you the ability to "Dial In" your cam. While it's nice to believe that cams are ground exactly to spec, many threads have shown that this isn't always the case. If the cam is off a degree or two either way it can throw off the valve events. Thus hindering HP and Tq. It's just nice to know that things are where they should be. 
Thread Starter
11 Second Club
iTrader: (3)
Joined: Sep 2007
Posts: 792
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From: Brooklyn Center, MN
Is a single or double a better way to go? I have a high lift on my cam with double springs. Would the single be too weak? Also, I really want to avoid milling the oil pump or block to allow the double roller to fit. I have an SLP HD oil pump. Would a double be OK to run w/o clearance issues?
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Teching In
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basically the adjustable time chain gives you the option of with advancing it so you would have better low end torque/horsepower or retarding it to have getter top end horsepower
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Teching In
Joined: Jul 2005
Posts: 11
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From: Houston, Texas
Do you know how to determine if your cam is degreed correctly?
You will need one of these (below) as well, otherwise that adjustable timing chain won't be of much use. Unless you have a shop install the cam and dail it in.
http://store.summitracing.com/partde...5&autoview=sku
You will need one of these (below) as well, otherwise that adjustable timing chain won't be of much use. Unless you have a shop install the cam and dail it in.
http://store.summitracing.com/partde...5&autoview=sku
