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

Rev Kits

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Old Feb 17, 2004 | 08:56 PM
  #1  
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Default Rev Kits

Can anyone offer pro's/cons regarding rev kits? TIA :cheers:
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Old Feb 17, 2004 | 09:06 PM
  #2  
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Default Re: Rev Kits (GRX)

This should get you started....

http://forums.corvetteforum.com/zerothread?id=449285

http://forums.corvetteforum.com/zerothread?id=435792
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Old Feb 17, 2004 | 10:00 PM
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Default Re: Rev Kits (GRX)

Supposed to be better for high-revving engines, like the Miniram'd people.

Superram and TPI shouldnt need it at all.
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Old Feb 17, 2004 | 10:08 PM
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Default Re: Rev Kits (vader86)

Do they "rob" power though more friction at lower RPMs?
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Old Feb 17, 2004 | 10:11 PM
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Default Re: Rev Kits (GRX)

To my knowledge, from my research on this thing for my future combination, no they dont really affect low-end that much, at least not for a streetable engine.

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Old Feb 17, 2004 | 10:22 PM
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Default Re: Rev Kits (vader86)

Scorp...I used a few sets of rev kitsbefore on my last 383 (probably wont build another one any time soon either)

Yes, it pulled 7000 RPM so fast if I nailed the gas in first, I couldnt shift before the tach hit over 7000...and that was even when the car hooked.

Of course, that was a single plane intake, Holley fuel injection, Brodix heads, CompCams and schneider custom one off goind cams.

I can say, they didnt hurt low RPM performance in my application. :)
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Old Feb 18, 2004 | 01:18 AM
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Default Re: Rev Kits (BBA)

how much do those kits go for?
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Old Feb 18, 2004 | 01:42 AM
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Default Re: Rev Kits (1996man)

I am running the AFR rev kit. IT seems to work good with my 377. It pulls to 8000rpm+ pretty smoothly, but I can't compare to not having it because I have had the rev kit since the motor assembly.
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Old Feb 18, 2004 | 01:45 AM
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Default Re: Rev Kits (1996man)

I got the L98 AFR kit for sale if anyone is intrested. They work great for what they're. Don't expect them to replace/solve weak valve springs or cure valve float caused by nasty lobes with high ratio rockers and high RPM.


KM

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Old Feb 18, 2004 | 03:07 PM
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Default Re: Rev Kits (88-406)

Just an installation tip: Go out and buy a valvespring compressor that is used for the old "flathead" Fords. It's cheap, available and most autoparts stores and will make your life alot easier.

or, you can just stack them together and sandwich them down tight as you slide the heads down onto the deck.
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Old Feb 20, 2004 | 10:14 AM
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Default Re: Rev Kits (speedjohnson)

about how much do these kits cost new?
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Old Feb 20, 2004 | 04:03 PM
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Default Re: Rev Kits (1996man)

They are around $200.
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Old Feb 20, 2004 | 09:24 PM
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Default Re: Rev Kits (zelement)

More like $250'ish + shipping

km
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Old Feb 21, 2004 | 12:09 AM
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Default Re: Rev Kits (88-406)

More like $250'ish + shipping

km
I paid $199 for mine. Bought directly from AFR
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Old Feb 21, 2004 | 12:46 AM
  #15  
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Default Re: Rev Kits (zelement)

Oh well I guess the price has come down. It's still on there site for more than that though.

km
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Old Feb 21, 2004 | 02:06 AM
  #16  
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Default Re: Rev Kits (88-406)

Oh well I guess the price has come down. It's still on there site for more than that though.

km
Just looked at my receipt. Part number 6150. $179.00+6.92 shipping+14.77 CA tax=$200.69
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Old Feb 21, 2004 | 09:26 AM
  #17  
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Default Re: Rev Kits (zelement)

They have various kits depending on LT1/L98 and/or OEM lifters or aftermarket lifters.

I just purchased an LT4 kit and it ran ~$242 plus shipping.

If you can get away without one, then I definitely wouldn't run one...just more complication/more to go wrong.

If you want rpm, then this may help...course mine isn't running yet, but I'm going to try for a 6800 rpm shift point with hydraulic roller setup.

:)
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Old Feb 21, 2004 | 11:59 PM
  #18  
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Default Re: Rev Kits (GRX)

Reading these posts is soooo informative. Mine is bone stock with 106k miles on it. Runs like a champ (right now it idles poorly and I'm working on that) up to about 5600-5800 rpm. but just before it shifts (auto)...I get a mini-explosion (backfire) and she falls on her face for a milisecond then picks up strong again until I get to that RPM again. I've been thinking it was the rev limiter being out of sync with the shift point in the tranny...now I'm starting to think weak valve springs.

Thoughts? :)
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