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What are the specs of the LT1 cam?

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Old Nov 24, 2002 | 08:21 PM
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From: The nation's capital
Car: 91 RS
Engine: 350 TBI
Transmission: 700R4
What are the specs of the LT1 cam?

Just what the topic says.....what are the specs for the LT1 cam?

Thanks,

-The Gunny
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Old Nov 24, 2002 | 09:18 PM
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From: College Station, Tex USA
Car: 89rs
Engine: 400Sb
Transmission: Tremec 3550
like .450 lift intake and .46 ext

duration is about 205 intake - 210 ext.
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Old Nov 24, 2002 | 09:56 PM
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From: Where the Devil Dances, IL
Car: 87Z
Engine: ?
Transmission: A4
Which LT1 cam? Here Vader has a neat chart in this post for you.

https://www.thirdgen.org/techbb2/sho...hlight=Lt1+cam
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Old Nov 24, 2002 | 10:05 PM
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Gunny Highway's Avatar
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From: The nation's capital
Car: 91 RS
Engine: 350 TBI
Transmission: 700R4
I have no idea which one it is. I bought from a guy off of Ebay. It's in great shape, but I don't know what it came out of. Is there a way to tell, like a number or stamping that might be on the cam somewhere?
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Old Nov 25, 2002 | 10:22 AM
  #5  
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Whip out you calipers or 2" mic and start measuring. One of those on the chart should match what you have, whereafter the rest of the specs should be revealed.



Hey, New... Adding a few cubes?
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Old Nov 25, 2002 | 10:37 AM
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From: Barboursville, WV
hmmmmm ::::cough:::::: Look in sig ::::::cough::::::
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Old Nov 25, 2002 | 07:54 PM
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From: Where the Devil Dances, IL
Car: 87Z
Engine: ?
Transmission: A4
Originally posted by Vader


Hey, New... Adding a few cubes?
What me, well I was going to add 50. But A good friend made me an offer that is hard to resist. Lets see if a 350 is better than a 305, then a 406 must be even better than a 350. It has a funny name too, Bowtie 406. The new exhaust is in. Just a quick side note for everyone, when you mod your 305 try to use parts that will help with a bigger motor too. Like "TRACTION PARTS"!

But the 305 is going to go 13's first.
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Old Nov 25, 2002 | 08:11 PM
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From: The nation's capital
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Engine: 350 TBI
Transmission: 700R4
Originally posted by new87

But the 305 is going to go 13's first.
305 going 13's?? Do tell. As long as it doesn't involve a bottle, I would love to know what you did.
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Old Nov 25, 2002 | 08:43 PM
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From: Barboursville, WV
I know a guy selling a 400 for 300$ I may but it to have for a future project. The motor needs rebuilt but around here its damn near impossible to find a 400 anymore.
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Old Nov 25, 2002 | 11:12 PM
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From: Where the Devil Dances, IL
Car: 87Z
Engine: ?
Transmission: A4
Just so you know the car ran a best of 14.0 @ 96 MPH this year. That run was 1 week prior to my fuel pump going out. I just put a new 3" cat back in, and in 2 weeks the motor is being pulled and freshed up just slightly, ie new gaskets. Heads are going to get a port and polish and maybe 1.6 RR. While the motor is out the 2800 Stall will go in. And with the $300 left a 3.73 disk rear end. I figure after tuning and and cool air of next spring 13.5 @ 100 MPH off the bottle I hope. 12.3 @ 1XX MPH on a NX 150 shot. :lala: We sall see. And remeber if you got the power you better be able to get it on to the track.
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Old Nov 26, 2002 | 12:12 AM
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Damn...... you got good bite

I once had a '94 Z28 T56 and the BEST ET I could pull was a 14.5 @ 96 MPH.

I think I shifted too fast and let the tires fly through 2nd gear too much.
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Old Nov 26, 2002 | 08:22 AM
  #12  
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New,

And that's all on stock heads, right? You're not the only one to realize that putting the power to the ground can yield good results. Smokey burnouts might look cool, but don't help the 60' times at all.

It seems that a little port work might eek a few more tenths off your time and get you a little more top end. Just make sure you don't go over the top and lose too much bottom end power. Then again, the factory castings prevent that for the most part unless you are willing to weld a little metal on first.

I'm guessing you still have '416 castings. The big gains will probably be in cutting down the short radius hump on the exhaust side, and trimming the valve guides/bowls to expose a little more valve. The runners should only need matching a little blending to the opened valve areas. That should keep velocities up enough to maintain charging and scavenging, yet allow a little better flow through the ports. Good luck on the "Lucky 13s".
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