That's damn impressive for 7#s. Congrats!!!

 

I dont understand everyone's thinking about smaller cams with less duration making more power in FI applications. As you can tell by my sig I am not new to forced induction. In the import community installing cams means the highest lift avaialable with the most duration equals the most HP at any given boost level. This guy pretty much proved that by using a very big cam both lift and duration wise on a 346 ci motor and made more power at a low boost level of 7lbs than anyone I have seen on this site. Most guys with a D1SC need 10-12 lbs to get the numbers he made and they use these supposed "boost cams" with puny durations and mid .500 lift numbers. By installing larger cams in forced induction applications you can make similiar numbers at lower boost levels. Imagine what he will make at 10-12 lbs which is what most guys with there "boost cams" need to get his numbers. I dont know call me crazy but bigger is always better. I understand boost bleed off etc..... like I said im not new to forced induction but if a cam causes your boost level to drop with a certain pulley size, what does it matter if your still making the same power with 3lbs less boost. Get a smaller pulley to get your desired boost level and make even more power.

 

From my research I believe the specs are 234/242 .600 .610 lift.

 

KP said it elsewhere, but the bigger the cam the less boost you will see. In the case of this T-Trim car, he's making some nice power with a big cam.

My setup has been similar, but I am boosting higher and running through a T400 and a 9".

 

I figured this post would have some controversy and it has. Thanks for the reply pro-stock. I'm assuming I would have to modify the bracket to use it then. I am running 10 to 1 compression with the AFR's. I hope this continues to stay friendly and informative.
-matt

 

Always nice hearing about T and YSi-Trim setups. The T-Trim is reportedly good for 825hp at the crank. How is that meth kit working for you?

 

The meth kit is working pretty good. It flows as it should and I got about an extra 20rwhp from it. I use it more for the piece of mind. The only thing that doesn't work with the kit is the led and i need to look into that further. I checked the connections with the test light and it is all good. It isn't a major issue, but I need to address it. The kit is clean and not to bad to install. I used the factory washer bottle and actually drill the fitting into the tb itself right through the clamp. I run the largest nozzle, but it seems to last for a while.
-matt

 

you would run a stock cam and make ???psi on this setup and feel great about it ?? You sound like the guys who hate on big cams with any setup because you want to make that extra 13ft lbs before 2,500 rpms, then you lose to a big cammed car and use that extra duration for the excuse!! aHHH! I dont get it!

 

I like my extra 13ftlbs of torque, havent lost to many big cammed D1SC cars around here either, except maybe on the dyno

And congrats Nasty SS, thats good power no matter what cam it is.

 

oh of course! here comes the ringer!! haha......yes you run great times and make great power! Do you think there is no need for large cams in any forced induction setup? Just curious. I know you have a great deal more knowledge than myself in this area. I just cant figure why all these 10.5w guys and similar classes have quite large cams and are "attempting" to go fast......Someone should tell them to put stockers in and check out the gains ?? There must be a line to where it is beneficial no ? Does that 13ft lbs come into play when you have a larger stall above that rpm level anyway as well ?? Again I am just a fan of the hobby and am just trying to learn.

Thanks

 

I dont have any recent dynos so i have no idea where my torque/HP curve is lol.

Honestly I run the small cam for several reasons, mostly because I can make a couple hundred passes a year with stock pushrods, rocker arms, light springs and dont have to worry about the valvetrain - just have to focus on the a/f and keeping detonation in check. Plus the car idlles at 600rpm and dont have to worry about it killing at a bad time. Thats the only reason I use such a small cam, no super secret small cam society bent on eliminating large cams here. Hard to argue that a big cam wont make more power, I just dont need the power at the moment.

My car is really nothing special or a 'ringer' LOL, I'm just using the power I have and its fairly light by forced induction standards. One day I'll step up to a little bigger cam and I'm sure the car will pick up, few other guys are building similar D1SC combos that are more geared towards drag racing like mine and they have 'real' blower cams and I'm sure they will run better then I do - then I can just say "hey you guys got big cams so you should be faster" Win/win for me

 

Sounds good my friend! Perfect explaination!! Best of luck to you with the current race season, your car is a great performer ( even with the little fella!) haha! take it easy!

Jason

 

I could go on about big vs small cams all day, both have their merits in a forced induction car. You know what they say though, its not the size that matters but how you use it

 

Why don't you say a little more, I'm interested. How about power under the curve.

 

Plenty of cam discussions have been had here already. Since I dont dyno my car its moot anyhow, problem with dynojets and loose torque converters its very hard to tell whats going on with 'under the curve' power. Since my car starts at over 4500rpm on a dyno pull all I see is 45-6800rpm and different converters will screw with the curve as well. Plus at the track I work in a very small RPM window once the car leaves, 6000-6700rpm so I dont think swapping cams will make a huge impact on what my car runs. The blower is dictating how much air is getting in the engine, my main concern is getting cool air to the blower and into the motor. I am way more concerned with average power and getting the car to 60' hard then peak power anyhow.

I havent swapped a ton of cams on an engine dyno so I am last guy to say what is 'best' for a centrifugal blower car or why. All I have done is run some sims with popular 'blower' grinds compared to what I have and the 20-30hp peak difference really isnt that big of a deal to me to start over and change the whole combo. Still goes back to the simple and reliable thing. This cam was in the car when I bought it and I worked around it and it proved to work well, thats why its still in here If my car came with a G5X3 in it I probably would have gave it a shot with the blower, Clint made good power with a hotcam also so if you spend the time anything can work with a FI car, might not be the 'best' but it will work well and make power. I'm not running any heads up classes where I need the 'best' either, just havin fun.

Shame you never spent the time with yours to get it 100% sorted out, would have been pretty easy to see just how much a larger 'blower' grind cam would have helped since our cars are similar..

 

kp - you know the penalty for even mentioning our name - the 'super secret small cam society bent on eliminating large cams'.

Now you must PAY!



Nice site, by the way.

Jim

 

Good numbers,

For better or worse it should be noted that highest power is being made at 6,900 rpm's vs. the same power at 6,000. The is 13% difference in delta just based on rpm. Another 3% for SD tune. The port matched FAST, 90mm Tb and Meth were a good move too.

Advantages.
Very long rpm band.
High hp based on rpm alone. 113%

Disadvantages.
Huge wear, to the second power at a minimum, excluding friction.
Potentail blow by.
PVC

If the stock motor is run at the over 6,000 rpm range for any length of time...I will leave you with that. I would suggest you maintain your car very well.

 

Where did this number come from? Just trying to understand.

Jim

 

out of his *** ??

 

I've said this before and I'll say it again, 2001+ cars came with the upgraded rod bolts, THE SAME rod bolts used in the z06(that has a rev limiter of 6500 rpms). So why would anything over 6k rpms be deadly ? Hell, I know of a few z06 owners who did nothing more than 1.8RR's and upped their limiter to 6800.

Also, quit pulling numbers out of your ***, fool