Very nice results indeed.

 

Looks like it turned out to be a great blower cam.

 

damn i need 12 more hp now! 12 shot of nitrous? jk jk but seriously any ideas?

 

What size pulley are you running....2.9? If so drop it to a 2.7 and retune and you'll get more than 12hp from it!

 

that is soooo insane!!! i cant wait to pick this thing up!

 

We can probably try that. Joe reccomended against it but the IAT's seem like there in control. I may have a 2.7 here in stock.

 

if everyone agrees we can get extra hp and keep it safe i think we should try it opcorn3: Joe, whats your thoughts?

 

GREAT NUMBERS!!! What are the IATs running? How much boost? How much timing are you running? Would you expect the same gains on my setup? That would put me at 530 and 500.

 

Definitely, I'd bet yours would pick up a little more. The IAT's went from 111-122 during the run and the subsequent idle brought it up to near 130.

 

Mr. Anderson will have to let you in on all of that info!

 

The 2.7 is a little small for a street daily driver. It is more the added stress on the belt then the ability to run a little more boost. Each .1" change in pulley diameter is about 1 psi of boost change. I know of several on the board that run a 2.7 pulley on an MP112, just watch for belt slip and tune for it.

 

i mean i drive easily 60 miles daily, so in all honestly do you think its a good idea or no?

 

You could have Alvin install a 2.7 and tune for it and see if he gets a nice gain before belt slip. If you are going to run a 2.7 I would recommend changing the belt every 4000-5000 miles.

 

This is killing me. Why do I look at this section, I'm not going to change internals.

I'm not going to change internals.

I'm not going to change internals...

 

Put the supercharger on first...then you can always change internals later!

LOL


Alvin, is this cam going to end up a big competitor to the LPE GT2-3?

I am considering both cams, your low lift STEALTH and GT2-3.

Both allow for growth it seems!! (stock manifolds...then headers...etc; instead of having headers right away w/ the attitude)

How will this cam function with a daily driver (high mileage => over 24k miles per year) (I'm curious about spring longevity)

Thanks and GREAT work!

-Mike

 

All this makes me think I really need forged internals, ported heads, maggie, cam, headers, true duals, etc...

But, I really need a winning lotto ticket instead, the rest will come with it. :lol:

 

4,000-5,000 miles? what happened to put it on and forget it?! jk maybe we should just leave it alone for now... unless alvin feels motivated!

 

Lol @ Steve.great job as usual Alvin

 

WOW!! Nice gains!

 

Nice gains Alvin!

 

Impressive!

 

Alvin, did you by chance notice what the boost level was at WOT with the stock cam and then with the stealth cam ? if so what was the difference ?

 

it lost about a half-to full pound of boost.. But that is not a bad thign.. It just means the engine is flowing more

 

The surface area on the pulley that the belt contacts is the issue with the smaller pulley's. If you can get that belt on then it can be used. I have not tried that belt length with the system. It is worth a try. Just make sure the tensioner isn't completely bottomed out and tapping.

It is best to change the belt once a year or every 5000 or so miles. Just put the old used belt under the seat as a back-up. The reason to change so often is that the belt starts to get hard and glaze. They only cost between $30-$45 and you want to keep it running with the least amount of slip.

 

The surface area on the pulley that the belt contacts is the issue with the smaller pulley's. If you can get that belt on then it can be used. I have not tried that belt length with the system. It is worth a try. Just make sure the tensioner isn't completely bottomed out and tapping.

I did the math between the 3" pulley versus the 2.7", basing it on 55% contact area between the belt and pulley (estimated by looking at it on the truck). By switching to the 2.7 pulley, the total belt length difference is .738" shorter than the standard supercharger belt, so using the 105.75" belt should be just fine. I have one on order and should be in tomorrow, so I'll keep you posted. The belt I bought is the Goodyear Gatorback Poly V p/n GTR-4061058. Couldn't find the Dayco equivalent yet, but I'm still searching.

 

Taking Notes On The Cam For When I Get A Maggie. Thanks For All The Input Guys.

 

so thats before it was tuned to perfect?

 

Yes, it made 429rwhp optimally tuned and had one 436 pull with more timing than I would typically leave in one. (I like to be safe with blower cars) So really the results should have been against 429rwhp instead of the 436. After the cam the most it made was 489rwhp with agressive timing and 488 with where I'd like to leave it.

 

A drop in boost is mainly due to positive overlap. Negative overlap will retain more boost.

 

alving just sent you a pm

122HH
trick flow 235 70cc
Meth injection

Will the high lift cam be good for me??

also what are the cam specs?

 

Just curious, would widening the lobe centers, perhaps delaying the intake, say 2 degrees, have a positive effect?

I imagine it might lose a bit of top end on a N/A motor, but under boost, perhaps help?

I have zero personal experience with power adders, but lots of curiosity.

 

This cam has negative overlap at .050. You will see a drop in boost just like if you used a less restrictive intercooler/aftercooler, better exhaust, etc. Boost is just a measure of back pressure.. if the engine is at a better VE you will see slightly less boost but with great gains still in power like we have here.