So what will differ against a regular N/A cam?

DD2K3 will not show any gains really from any modifications other than boost ;)

Using an XR292R now 254/262@050 with 660/666 lift. LSA unknown. Installed Straight up.

Hard now getting over 800hp on 10psi boost.

Friends 502 with similar setup pumps 1067hp@12 psi.

Ditched my 60lbs injectors for 120lbs and ability to seq-controll them. Will mount up an extra A1000 pump parallel.

ttt

Anyone?

The 60lb injectors must have been going 100% duty cycle to make over 600HP, never mind 800. I'm not sure the 120's will be enough either. 10 psi boost is only 1.7 Bar, you are likely going to need 2 bar to hit the numbers you want.
Are you overboosting the fuel pressure as well?? What size throttle body? Fuel rail size? AF ratio under full boost? Whose CPU are you using? And finally what is your ignition setup? You need some serious ignition components to fire the cyl pressure you need.

Had 71% dutycycle with 3,5 Bar pressure @7000rpm and 671hp.

Using A1000 pump and regulator that has boost port.

Using Microtech LT8S as ECU.

Will be using MSD Dis-4 driver and MSD spools.

2000cfm Billet Dominator style body.

Fuel logs with AN8 inlet and returns.

AN10 delivary system and AN8 return.

A/F ratio will be what gives most power. Between 11-13.

The lsa is critical and could be a problem depending on what it is. I normally run 114 but my ProCharged 540 used a 112 with .689 net lift and 266/276 @ .050. Tried to kill some bottom end torque but it didn't work!

I ran 95# injectors at 828 rwhp and was at the end of the injector d.c. This was at an a/f of 11.7 or so which in that combo made 50 more rwhp than 12.2:1 did; probably due to the extreme heat of the dyno day, giving a little more cooling in the cylinder.

What heads are you running? Air intake system and filter size?

Jody

Running Canfiels 310cc with 11/32 2.25/1.88 valves.

Bought 2-1/4-4" hedman husler weldup headers.

Using an EFI Holley intake with dominator flange.

I dont know what type of filter i want yet...

Originally posted by godsend:
Had 71% dutycycle with 3,5 Bar pressure @7000rpm and 671hpThis does not compute. Are you talking about the 60lb injectors here? They simply will not flow enough fuel to produce the HP. What fuel pressure are you seeing at full boost?

Also it is extremely dubious that you are spinning a hydraulic roller to 7K without severe valve float. I would say this alone is killing all of your top end.

That is N/A power.

Supercharger unit arrives after christmas.

Itīs a Mech roller. Crane vertical lifters, comp magnum steel roller rockers, hitech pushrods, 260/640lbs springs.

I talked to my friend. He made 1035hp with his 502 bigblock @8psi boost.

Anything under 900hp @ flywheel will be a dissapointment for me. Then i could spray it instead.

Camshaft should take small dozes och N20. Mayby up to 200-250hp from dual plates. (100-125 per stage)

Originally posted by godsend:
That is N/A power.

Supercharger unit arrives after christmas.

Itīs a Mech roller. Crane vertical lifters, comp magnum steel roller rockers, hitech pushrods, 260/640lbs springs.

I talked to my friend. He made 1035hp with his 502 bigblock @8psi boost.

Anything under 900hp @ flywheel will be a dissapointment for me. Then i could spray it instead.

Camshaft should take small dozes och N20. Mayby up to 200-250hp from dual plates. (100-125 per stage) He must make about 700 hp without the blower then to make that much at such a small amount of boost.

Jody

To TJC, This cam is a solid roller according to the Comp Cams Catalog and has a 110 degree lobe centers.

Excuse me re; hydraulic cam comment. Thanks Harold. redface.gif

Originally posted by godsend:
Hard now getting over 800hp on 10psi boost.
So this is just theoretical HP then.... I understood you were already running this combination. :rolleyes: I think that 'prediction' by the software is very conservative.

Which blower have you selected? Have you calculated your effective compression with the boost? You had better have the timing pulled way back the first time you roll in the throttle....

As was said before you will want a cam with a wider LSA to trap more pressure. I think your lift and duration numbers are good as they are.

He makes almost 700. Some hp short N/A Ill get his camcard. Comp had grind one for his engine.

Will be using an Vortech V7-Ysi trim blower with 2.5 pulley.

His cam:

279/285 adv 240/248@050 112 LSA 0.650 lift.

is this a better cam. Hes pumping out serius power with it.

Is he using the same blower as you? What differences in his build and yours such as heads, cid, etc.?

Jody

He has an 502. 4" stroke.

He is using Pro Topline 325cc heads. And an ATI Procharger F2 unit. Otherwise alot is same. Efi, compression, etc etc.

I have an 470. 4" stroke, 310cc canfields, V7-Ysi trim Vortech.

Depending on port work I believe his heads out-flow yours. That F2 blower also has a lot more airflow than the Vortech. Your blower flows 1600 cfm but his flows 2700 cfm; huge difference, 70% more. It's a lot of little differences adding up in his favor.

If you start running more boost your numbers will climb. I just don't think they'll be comparable to his at the same lower boost level due to his superior airflow at those boost levels over your blower.

Jody

My wrong. Its an F1 blower.

FWIW, I'm in the process of installing a 540 with an F2. I'm using 160 lb injectors in hopes of getting 1300 hp @ 20 psi (flywheel). As for the cam, I called Comp Cams several times for a recommendation and got a totally different cam spec each time. I'm not slamming these guys, I personally have a lot of respect for them and have had excellent service, but I decided it was best to get with someone who deals with centrifigually blown engines and have them design the cam. In my case it was Panhandle Performance. I wanted to have the ability to drive mine on the street so it's fairly conserative but for comparison sake it spec'ed out at 255/262 @ .050 .647/.650 114 LSA. BTW, Comp Cams ground this cam.

On what ICL?

So a cam with 110LSA with same values will be totally ineffective?

Running NOS also. Cam typ?

Originally posted by godsend:
So a cam with 110LSA with same values will be totally ineffective?

Running NOS also. Cam typ? Not totally ineffective, but much less effective. The 110 lsa allows the compressed charge to go straight out the exhaust, much more so than the 114 lsa. That's why most turbo/blower/nitrous cams run the wider 114 lsa. The 114 lsa will build more boost and will build boost faster.


Have either of these engines been dynoed, or are you comparing computer simulations?

Jody

His engine is Dynoed. Mine is Dynoed N/A in february. My charger will be here around christmas.

So dyno time will be around jan/feb.

Running 300shot now. quite effective. ;)

I heard what you saying though. Im going with a new billet grind.

So need to order cam next week.

Comp cams 300BR-14 300/308 and 252/262@050 with 114 LSA.

Is it right one?

4/7 swap. is it worth it?

SD-Concepts.com
These guys are a large dealer and tuner for the
Pro-charger line.
I would be talking to RACERS who SPECIALIZE in
centrifugal motors as you're putting quite an investment on the line and dyno-tuning will be
the way to go with a tuner who specializes in spark-fuel curves.I wouldn't want to lean out my
12-15 grand investment right out of the box.

Tried SD concepts. They never answered my mails.

Thats their miss.

Ordered a special grind from a local guy insteed.

Ill come back when dynoed.

Will be running E85 for more power @ same flow. They say about 20% more power without more boost.

Didnt dyno yet. Will do that 20 Mars.

But my cam speced out an little odd.

268/280@050 with 680/682 and an 114 lobesep.

to small?

My machine is now dynoing... Sounds great.

But when boost builded up. The dyno broke... ;(

So we took it apart and all 20 bolts holding the turbine was broke. New parts and going for it tommorrow again...

Hold your thumbs... ;)

Aiming for 800+ with my setup i running now. Next month we will hit 1100hp.

Headers are custombuilt. 2" primary 80cm long with 3,25" collector. 40cm long. Stainless steel.

There was no dyno results. An ignition box failes. Didn know that then.

Runned my first 402 yesterday.

3psi boost from 5500-7500 4-6 psi under that.

1.389 60.ie
5.80/191km/h
9.15/233km/h

78 deg celsius intake temp. Alot too high so im going for an intercooler setup.

Also had a guy make me some new pulleys for higher psi loads.

8.s here i come again... :)

Runned my first 402 yesterday.

Is that 402 meters?

What converter did you wind up using?

Is that 402 meters?



From Google:

402 meters = 1,318.89764 feet

Damn cheatin Euros!!!







(j/k)

Its 402,33 something... meters.

Using my old A1 converter...

8.83 with 220 deg f. intake temp on pump fuel.

Anyone interested in a new enginge over there. ;) Going over in 2 months and picking up a new chassi. Can take engine with me if someone want to win pump gas shootouts. ;)

[
Will be running E85 for more power @ same flow. They say about 20% more power without more boost.[/QUOTE]


Anyone know anymore about this????????????

Not much help on cam selection, but it has a centrifical blower, and I thought you might enjoy the video.

http://members.cox.net/joelynch12/Buddy10-8-05.wmv (http://members.cox.net/joelynch12/Buddy10-8-05.wmv)

thanks for the video.

Left supercharging now. Gone inte turbocharging instead...

A fellow over here got me suited with a great cam. And all my goals was ashieved. :=)

I fan to me made a movie from this year.

(from sweden)

Movie is here! (http://62.127.255.50/kalender/Brillko@Tribute_ByManston(1).avi) Right click, save target as... 218 megabyte large and 20 min long.

In the early summer i hade huge boost problems and threw belts everywhere.
We found better and better belts, Boost rised. Then we ran into fuel deliviry problems so i went with dual A1000 fuel pumps. Once its fixed it ran 8.83 without any problems @ 6-7Psi of boost.

Late summer i only streetraced, boost was in 12 psi readings and we used a 150 shot n20 to. Went pretty good.

My last summer with the lemans ,(

Enjoy!