LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Timing Chain

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Old Sep 25, 2005 | 05:08 AM
  #1  
blahster's Avatar
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Timing Chain

Will the LT4 extreme duty timing chain set or the Cloyes True Double Roller Timing Chain set offer the best strength?

thanks
Old Sep 25, 2005 | 08:48 AM
  #2  
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Re: Timing Chain

Probably going to need more info on what you are using it for but for most applications, the Xduty should work just fine. I have it, and am putting down 400+ at the rear wheels.It has worked fine for me so far. Like I said though, depends on your application. Good luck.
Old Sep 25, 2005 | 04:23 PM
  #3  
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Re: Timing Chain

Going to be using it with my future 383 LE3 N/A setup with a possible 150-175 shot of nitrous.
Old Sep 25, 2005 | 04:33 PM
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Re: Timing Chain

The double roller is stronger. You just have to weigh if you want to run an electric waterpump or not.
Old Sep 25, 2005 | 04:38 PM
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Re: Timing Chain

I run the Extreme Duty set at 7,400rpm redline, with a fairly beefy spring pressure on a solid roller camshaft. Friend of mine made 1,125HP on a blown 383, 8,000rpm redline, with a very large solid roller and the LT4 Extreme Duty set. I did have the cam sprocket lightened, because the set has excess mass in the sprocket to address a problem with the LT4 cam.

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Old Sep 25, 2005 | 04:51 PM
  #6  
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Re: Timing Chain

ok. sounds like the lt4 extreme duty chain would be a good choice for me then...i do not plan on running an electric waterpump....Not to mention the LT4 set is cheaper...

Workin on a budget here....
Old Sep 25, 2005 | 04:53 PM
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Re: Timing Chain

whats the point of running an electric waterpump over stock?
Old Sep 25, 2005 | 11:59 PM
  #8  
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Re: Timing Chain

Running the lectric pump is less for the motor to turn.... More HP... The cloyes dual roller set up is much stronger. Besides The large gear on the Cloyes is almost 1000 Grams lighter than stock gear. Also less likley to stretch. The cloyes may require clearincing of the timing cover but it's worth it..........
Old Sep 26, 2005 | 04:00 PM
  #9  
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Re: Timing Chain

According to a Cloyes engineer,the ED is AS strong,or stronger than the double roller,based on pin size.
Old Sep 26, 2005 | 04:27 PM
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Re: Timing Chain

Originally Posted by blahster
ok. sounds like the lt4 extreme duty chain would be a good choice for me then...i do not plan on running an electric waterpump....Not to mention the LT4 set is cheaper...

Workin on a budget here....
If I remember correctly the LT4 set and the Extreme duty set are not the same thing - 2 different sets.

The extreme duty set is much more expensive than a double roller, but about the same when you factor in the cost of the electric water pump. Don't hold me to that though, it's been a long time since I priced out timing chains...
Old Sep 27, 2005 | 08:28 AM
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Re: Timing Chain

Originally Posted by speedmiser
If I remember correctly the LT4 set and the Extreme duty set are not the same thing - 2 different sets...
You are correct they are two different sets with the ED being the stronger of the two.
Old Sep 27, 2005 | 11:37 AM
  #12  
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Re: Timing Chain

They are two different sets but there made by the same manufacturer.
If you run the Extreme Heavy Duty contact Cloyes and get the bigger crank sprocket gear to take out the extra slack in the chain.

I have no problems with mine and I don't run an electric water pump.
Old Sep 29, 2005 | 02:36 PM
  #13  
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Re: Timing Chain

GM-12370835 GM LT4 Extreme Duty Timing Chain Set
includes true roller chain, timing gear, crank gear $279.97

this i what cmotorsports.com has to offer...this would suffice correct?

I am just gonna be runnin about 430rwhp N/A...with a possible 150 shot....maybe...i dunno yet.

Thanks!
Old Sep 29, 2005 | 04:18 PM
  #14  
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Re: Timing Chain

Yes this part number is correct. Like I said though it comes with just a little more slack in the chain but would be fine. If you want contact Cloyes (479) 963-2105 ext 231 and tell Gary you want the larger crank gear to take out the slack. Tell him what your doing and he'll know exactly what you're talking about.

Tony
Old Oct 3, 2005 | 08:44 PM
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Re: Timing Chain

Originally Posted by Injuneer
I run the Extreme Duty set at 7,400rpm redline, with a fairly beefy spring pressure on a solid roller camshaft. Friend of mine made 1,125HP on a blown 383, 8,000rpm redline, with a very large solid roller and the LT4 Extreme Duty set. I did have the cam sprocket lightened, because the set has excess mass in the sprocket to address a problem with the LT4 cam.
What problem does the LT4 cam have? Does the LT4 hotcam have that same problem?



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