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

LT4 Hot Cam Kit What Should I Expect??

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Old 07-06-2008, 05:23 PM
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LT4 Hot Cam Kit What Should I Expect??

Hi guys I am getting ready to install the LT4 Hot Cam Kit and I wanted to see what horsepower numbers I should be expecting to gain? I have C.A.I. and L.T.'s on it presently.. Thanks for the help
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Old 07-06-2008, 06:54 PM
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I am assuming this is going into an LT1. I have the Hotcam w/ mid tubes. Check my sig for numbers. People have gotten anywhere from the low 300's all the way up to 340+. Just make sure you have your basic maintenance taken care of, and you have all the supporting mods and you should be able to get great numbers.
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Old 07-06-2008, 08:36 PM
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mine laid down 355rwhp & 360rwt
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Old 07-06-2008, 10:07 PM
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Originally Posted by axehead
mine laid down 355rwhp & 360rwt

With just the LT4 Cam and not the Cam/Heads upgrade???

That's impressive for a Cam only swap.

-Ivan
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Old 07-07-2008, 10:59 AM
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Originally Posted by axehead
mine laid down 355rwhp & 360rwt
What Supporting mods do you have done?
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Old 07-07-2008, 01:11 PM
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I think at full bolt ons (CAI/LT's/TuneUp/Catback/PCM Tune/ RR's) most people put down 300rwhp through an M6. I'd assume w/ the cam and 1.6 rr's you should pickup around 30-40rwhp. So I can see 355 if you have an e-waterpump or something else.
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Old 07-07-2008, 03:50 PM
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the 355/360 numbers are rare. His setup is a good "combo" which means that his results are not typical.

So yes you can hit 350/350 but its not easy. And for every one hitting those numbers there are 10 who arent.

I would expect 325rwhp with full exhaust, 1.6rr's and a hotcam kit.
A ewp, 52mm tb, crank pulley, cutout, etc are needed to hit 350rwhp
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Old 07-07-2008, 04:45 PM
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since you have to take the intake off anyways..take the heads off and get them ported should definitely get you to 355
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Old 07-07-2008, 07:28 PM
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see sig for comparison
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Old 07-07-2008, 07:36 PM
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i have all the boltons & ported stock heads with 1.6 rr's. oh yea, i do have EWP. but it was thru a 12 bolt.
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Old 07-08-2008, 12:15 AM
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Originally Posted by Jazsun
I think at full bolt ons (CAI/LT's/TuneUp/Catback/PCM Tune/ RR's) most people put down 300rwhp through an M6. I'd assume w/ the cam and 1.6 rr's you should pickup around 30-40rwhp. So I can see 355 if you have an e-waterpump or something else.
Yea it will be having a CSR electric water pump...
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Old 07-08-2008, 12:17 AM
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Originally Posted by slomarao
the 355/360 numbers are rare. His setup is a good "combo" which means that his results are not typical.

So yes you can hit 350/350 but its not easy. And for every one hitting those numbers there are 10 who arent.

I would expect 325rwhp with full exhaust, 1.6rr's and a hotcam kit.
A ewp, 52mm tb, crank pulley, cutout, etc are needed to hit 350rwhp
Well its better I guess to go into this in a humble manner I see than expecting a 10% chance.... I will be running straight pipe from mac mids, we have no emmisions in our county....
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Old 07-08-2008, 12:18 AM
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Originally Posted by Jazsun
since you have to take the intake off anyways..take the heads off and get them ported should definitely get you to 355
How do stock heads flow that are ported and polished cause my buddy had his heads PP and never had them on the flow bench???
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Old 07-08-2008, 12:20 AM
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Originally Posted by axehead
i have all the boltons & ported stock heads with 1.6 rr's. oh yea, i do have EWP. but it was thru a 12 bolt.
Whats your numbers on track and dyno?
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Old 07-08-2008, 09:25 AM
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his numbers are 355/360 at the tire.
Porting the stock heads can gain you 5-75 hp. Depends on who ports em and how much time they spend on them
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