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

242/248 XFI on a stock bottom end car?

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Old Nov 26, 2006 | 09:49 PM
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242/248 XFI on a stock bottom end car?

How would this work? It has less advertised duration than the 234/242 gm 847 cam so I'm thinking I might give it a try. How would it act, or would it make no power at all down low?
Old Nov 26, 2006 | 11:12 PM
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Bad Idea
Old Nov 27, 2006 | 12:01 AM
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Can you say rebuild??
Old Nov 27, 2006 | 12:27 AM
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'94 Bad A Z28's Avatar
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242/248 is the advertised duration wich is bigger than the 847's 234/242.
Old Nov 27, 2006 | 08:00 AM
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Originally Posted by '94 Bad A Z28
242/248 is the advertised duration wich is bigger than the 847's 234/242.
Thats the duration at .050 lift, not advertised...
Old Nov 27, 2006 | 08:01 AM
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Originally Posted by SStrokerAce
Bad Idea
How about the 847? I want to go custom but I don't know my head flow #'s. Or the 230/236 XFI, 230/236 XE, or 236/242 XE?

Last edited by speed_demon24; Nov 27, 2006 at 08:09 AM.
Old Nov 27, 2006 | 08:22 AM
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Originally Posted by SStrokerAce
Bad Idea
I'll second that. Unless you happen to be looking for a reason to rebuild whats left of you shortblock, and maybe one of your heads if things get really ugly.
Old Nov 27, 2006 | 08:25 AM
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Originally Posted by Z-RATED94
I'll second that. Unless you happen to be looking for a reason to rebuild whats left of you shortblock, and maybe one of your heads if things get really ugly.
He is.

He's crazy like I am
Old Nov 27, 2006 | 08:31 AM
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I was making over 500rwhp on a 150 shot on the stock bottom end, people don't give LT's enough credit...
Old Nov 27, 2006 | 09:03 AM
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I'm not saying it might not last awhile or that these aren't decent motors. But the higher the rpm the shorter the life span no matter what you have. And Javier, no one said it's a bad thing to be a (little) crazy.
Old Nov 27, 2006 | 11:14 AM
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Originally Posted by speed_demon24
Thats the duration at .050 lift, not advertised...
bleh... whatever, still bigger.
Old Nov 27, 2006 | 11:17 AM
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'94 Bad A Z28's Avatar
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Originally Posted by speed_demon24
I was making over 500rwhp on a 150 shot on the stock bottom end, people don't give LT's enough credit...



Over 500rwhp and you went 11.6 @ 125? I went 12.11 @ 116 with only 364rwhp, what was your '60 on that run? Mine was a crappy 1.867.
Old Nov 27, 2006 | 01:30 PM
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I had a 236/242 on a 110lsa with a MadWolf tune and it behaved as if it was stock while cruising around town. I would have gone bigger if my motor didn't blow up. LOL! Btw the cam is for sale.

-B
Old Nov 27, 2006 | 03:22 PM
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Originally Posted by '94 Bad A Z28
Over 500rwhp and you went 11.6 @ 125? I went 12.11 @ 116 with only 364rwhp, what was your '60 on that run? Mine was a crappy 1.867.
2.0 spinning through 2nd once the spray kicked on on nitto's. I parked it after 1 run I didn't want to put my rear end through that again. + I let off once my shift light came on in 4th which was about 100ft before the finish line...
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