LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Need alittle valvetrain help?

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Old Nov 14, 2006 | 04:47 PM
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Default Need alittle valvetrain help?

So I decided to get the LE3 H/C package. Right now Im running a set of mildly ported stock heads and the cc306 cam with stock lifter, and pro magnum S/A rockers on a 383. This is kinda two question in one here.

#1 I need a set of lifter to handle the LE3 cam. I kno the Morel lifters are better than the comp cams lifters but how much better? What are the pros and cons of the two?

#2 The heads will have beehive springs on them I wanted to kno if self aligning rockers would work with them or not, or is it better just to switch to nsa rockers and guide plates.

Any info is appreciated.
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Old Nov 14, 2006 | 04:58 PM
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Originally Posted by BarneyMobile
So I decided to get the LE3 H/C package. Right now Im running a set of mildly ported stock heads and the cc306 cam with stock lifter, and pro magnum S/A rockers on a 383. This is kinda two question in one here.

#1 I need a set of lifter to handle the LE3 cam. I kno the Morel lifters are better than the comp cams lifters but how much better? What are the pros and cons of the two?

#2 The heads will have beehive springs on them I wanted to kno if self aligning rockers would work with them or not, or is it better just to switch to nsa rockers and guide plates.

Any info is appreciated.
You need to contact Lloyd Elliott about all of this. He will give you the correct answers or direct you to the right person for the correct answers. The LE cams are designed to work with specific parts.
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Old Nov 14, 2006 | 05:19 PM
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I called him and he said that both lifters world work well but the morels would be better. I want to kno are the morels worth it, performance and reliablilty wise? I also talked to him about the the rockers and he said that theres about a 10% chance that the self aligning rockers wouldnt work.
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Old Nov 14, 2006 | 07:05 PM
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Originally Posted by BarneyMobile
I called him and he said that both lifters world work well but the morels would be better. I want to kno are the morels worth it, performance and reliablilty wise? I also talked to him about the the rockers and he said that theres about a 10% chance that the self aligning rockers wouldnt work.
If I were going to the LE3 package which spins well into the mid 6000s, I would use a 7/16 " rocker stud, the best lifters I could buy and the correct (strong) pushrods. Selfaligning ProMags (CC 1318) have 3/8 studs. That wouldn't be my choice for a 6500+ engine.

If I were doing an LE1 for an engine that almost never saw over 6000, with a lot less cam than a LE3, I might look at the 1318s. Looking at one now, I see where there might be some interference of the SA tabs with the spring retainers. I'd find that in the build up.

Why are you going LE3 and not LE2, BTW? Do you have all the supporting stuff to make the 3 work?

My $.02
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Old Nov 14, 2006 | 09:43 PM
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I went with the LE3 because I want a mid 11sec car on motor. I also sent Lloyd my intake to port, I have a 58mm TB and hooker super comp LT's. I have a 3200 stall and soon going to a 3800-4k stall, and I plan on driving this on a daily basis. As long as the car idles in gear with out stalling and goes 11's I'll be happy.
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Old Nov 14, 2006 | 10:18 PM
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If Lloyd uses .250 tip length valves, like the Manleys I have, a -.050 lock is required to clear the retainer with SA RRs. Means the spring seat needs to be lowered .050, or you have to live with higher spring pressures. However, if the seat is NOT lowered, using beehives you may run out of available lift depending on cam.

Lloyd OUGHT to have the answers to this.
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Old Nov 14, 2006 | 11:35 PM
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Yep the valves are .250" tip and NOT -.050" locks so they will not clear SA rockers...

Listen to OldSStroker he is getting the info straight from the horses mouth about the valvetrain ;-)


LE3 stuff needs a built 355 bottom end at the least, 383 would be even better.

Bret
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Old Nov 14, 2006 | 11:59 PM
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i thought a 355 le3 would be faster than a 383...thought they were great but still kinda small for a 383

or woul0d you be better keeping a stock bore with a 3.75 crank and have room to keep going without having to buy new crank?
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Old Nov 15, 2006 | 09:11 AM
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Originally Posted by BarneyMobile
I went with the LE3 because I want a mid 11sec car on motor. I also sent Lloyd my intake to port, I have a 58mm TB and hooker super comp LT's. I have a 3200 stall and soon going to a 3800-4k stall, and I plan on driving this on a daily basis. As long as the car idles in gear with out stalling and goes 11's I'll be happy.
With all the good stuff you are planning to use to get to mid 11s and being a DD, I think it would be unwise to cheap out on the lifters and rockers. You don't get the kind of power this combo can make without putting some pretty heavy loading on the valvetrain. I don't mean just spring pressure, but all the inertia loads due to accelerations of the valvetrain components.

There's never a free lunch when you double the stock hp.
Originally Posted by SStrokerAce
Listen to OldSStroker he is getting the info straight from the horses mouth about the valvetrain
LOL. Better than from the other end, huh?
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