C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

hotcam in LT1 questions

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Old Apr 14, 2006 | 12:21 PM
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Default hotcam in LT1 questions

1. Can cam be installed without removing engine from car?

2. Must the heads be removed to install new valve springs/rockers?

3. Will it pass emissions without re-tuning anything?

4. Is there any sacrifice in reliability?
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Old Apr 14, 2006 | 12:25 PM
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Originally Posted by Scooter 94
1. Can cam be installed without removing engine from car?

2. Must the heads be removed to install new valve springs/rockers?

3. Will it pass emissions without re-tuning anything?

4. Is there any sacrifice in reliability?
1. Yes
2. Nope
3. Maybe
4. No

This link will help. http://www.hashmarks.com/techtips/hot_cam.htm
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Old Apr 14, 2006 | 12:34 PM
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Without a retune, passing emissions is unlikely, but I dont know how strict Tenn. is.
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Old Apr 14, 2006 | 12:35 PM
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Old Apr 14, 2006 | 12:38 PM
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Originally Posted by vader86
Without a retune, passing emissions is unlikely, but I dont know how strict Tenn. is.
Don't think it's as tough as some states, but ya never know. Bears further checking into.
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Old Apr 14, 2006 | 12:51 PM
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Originally Posted by Scooter 94
1. Can cam be installed without removing engine from car?

2. Must the heads be removed to install new valve springs/rockers?
What's your approximate cost in parts for 1. and 2.?

I'm curious, because it might be a worth-while thing for me to do as well.
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Old Apr 14, 2006 | 01:32 PM
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How does one go about re-tuning to pass emissions?

Stearnman, here's Summit's link to the hotcam kit. They show $530.: http://store.summitracing.com/partde...5&autoview=sku
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Old Apr 14, 2006 | 02:07 PM
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Originally Posted by Scooter 94
How does one go about re-tuning to pass emissions?
You can tune it yourself using Tunercat/LT1 Edit, Datamaster, and VeMaster, or you can have one of the Supporting Vendors do a mail order tune.

Hey, if you want to cruise up to Missouri, I'll tune it for free. You just pay the dyno time.


-Mike
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Old Apr 14, 2006 | 02:17 PM
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Originally Posted by Scooter 94
How does one go about re-tuning to pass emissions?

Stearnman, here's Summit's link to the hotcam kit. They show $530.: http://store.summitracing.com/partde...5&autoview=sku
Cool. Is that the kit you are going with? Are there any other things that you need to add/change that are not in the kit?

Stock LT1 valve cover (atleast on the '92) won't clear the 1.6rr's. Will the stock push rods work?

Thanks for the info!
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Old Apr 14, 2006 | 02:29 PM
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I'm just at the exploratory stage right now. Started reading up on it last night. For 12 years I built sort of a mental block that the engine would be too complex to work on, (which was silly because I've done LOTS of mechanic work on LOTS of vehicles). Then got into changing plugs/wires and realized it's not a magic box after all. Just a matter of how much time/money/effort ya wanna put into it.

Thanks for the tune offer Mike, may take ya up on it one day.
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Old Apr 14, 2006 | 02:40 PM
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I'm with you Scooter. I use to think that engines were a type of voodoo black magic thing-a-ma-jig that I didn't really want to mess with. But since I bought my vette I came to realize and understand that if I put more effort into learning how to fix things myself and inprove things myself, I could spend more money on the items/equipment/etc and less on labor (some things you can't or don't want to do yourself).
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Old Apr 14, 2006 | 10:30 PM
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If you don't re-tune it, it will idle like crap.
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