Patrick G

iTrader: (14)

Now I'm finally reaching the potential of this Thunder Racing/AFR package. For those who may not know, I'm running off the shelf AFR 205s with a .030" mill along with Thunder Racing's awesome new cam featuring Comp's new LSK lobes. Called the TRak cam (specs in signature), it pulls very hard to 6800.

Back in August, Thunder Racing installed the cam with Kooks headers and catted y-pipe. Since I was in a rush, we didn't get a chance to do much in the way of tuning. The result at the time was a very respectable 455/402 output. Since then, I've gotten EFI Live and with much input from tuning master Geoff Skinner from Thunder Racing, I've been able to get quite a bit more power out of my combo.

Today in full street trim (Kooks catted y-pipe, full belts, SLP dual dual catback) the car put out 472rwhp,420 rwtq. Next, I wanted to closer duplicate the results that Tony Mamo got with his C5. I needed a better exhaust and an electric water pump. With help from LS1 Joe, we bolted up a pair of 3" extensions with bullets on the ends and replaced the y-pipe and cat-back. Next, we did the short belt/EWP mod. The result was a very nice 487.59 rwhp and 436.81 rwtq.

Whoever says that Tony Mamo's numbers can't be duplicated need to pay closer attention to following Tony's "recipe". I've added a new twist to the recipe that Tony plans on adding to his C5: Speed Density Tuning! No MAF. The dyno run shows street trim verses race trim. Apologies for the light printer color. I'm going to get an e-mail of this dyno and try to re-print. I will post when I get a better copy.

pdd

iTrader: (3)

unreal!!! congrats patrick

RPO_Z06

iTrader: (11)

Very impressive...

ninobrn99

iTrader: (8)

very,very nice!! however, this is more a topend performer is it not? it kicks in hard after about 4100rpm for you hp and its kinda hard to tell your tq. just an obervation..not doubt the thing is a beast though!

Patrick G

iTrader: (14)

I wouldn't call it a top-end performer per se, I would just say it's a BALANCED combination. If you can make out the torque curve, it makes 350 rwtq at 3000 rpm. That's pretty good for a motor that makes good peak power at higher rpm. The AFR 205s have lots of airspeed and give tons of low and mid-range torque. The Thunder Racing TRak cam makes fantastic mid-range because of very good valve events. All of this breathes well up high because of big lift, big flow numbers, and minimal restrictions.

And the idle is sooo smooth and the driveability is incredible thanks to Speed Density tuning.

racer88

Nice numbers!

I am hoping to crack the 390 area after I stick some TEA 5.3L Stage II heads on mine........I will be more elated if I crack the 400 area but my track times and MPH will be my bottom line.

Post up some track times if and when you can.

gollum

iTrader: (1)

How did you replace MAF? Large hollow tubing?

Patrick G

iTrader: (14)

I used a 4" diameter 4" long piece of exhaust pipe in place of the MAF. I connected the pipe to the TB by using a 4" hump hose. It's pretty much 4" all the way from the lid to the TB. We actually lost 4 rwhp when we ran with the TB completely open. I'll have pictures posted soon.

Steve C.

iTrader: (2)

thats just sick

UMD_Jesse

iTrader: (6)

holy sh*t

eb02z06

iTrader: (18)

That's awesome Patrick-just friggin awesome! Is there any advance ground into that cam? Those are some very impressive results for a cam with such small duration at .050. The torque is very impressive-the car must be a blast to drive on the street! I guess I'm going to pullin the heads to do some flycutting!

Beast96Z

iTrader: (21)

Would you say that the low to mid range suffered some over an XE-R lobe? Trying to see if you had similar results to Tony with the LSk lobes. His results weren't that great with the LSK's.

DavidNJ

You should republish the cam dimensions. Aren't you producing numbers some get with cams in the mid-high 230s low 240s with a smaller cam.

Great results. Imagine a bigger heads, bigger bore would produce even higher peak numbers at the cost of some low end. Love that cam.

ninobrn99

iTrader: (8)

answered my question. SD is the way to go! Will the exhasut tube not heatsoak? just curious. looking for alternatives is all.

Pro Stock John

iTrader: (34)

Nice, when you hittin' the track? Figure 125mph or so traps in a full weight car?

SouthFL.02.SS

472/420 was thru a catted Y-pipe? Nice.
Looks like yet another traditional split/ Fast 90/ Good head/ stock cube combo makes the 480rwhp list.

Patrick G

iTrader: (14)

John, I hope to be at SAR in a few weeks for the shootout (although it will most likely be in street trim since I no longer have a trailer or slicks, LOL). I predict 12.50s at 12x mph, haha. Racing on street tires is funny.

Patrick G

iTrader: (14)

Yes, just like I run it on the street every day. Kooks catted y-pipe going into a single 3" exhaust.

SouthFL.02.SS

Very nice. My ol' street driven, stock cube 480rwhp H/C setup is also thru a 3" Y-pipe (ORY however) and QTP HVM LT's. People will soon learn that X-pipe true duals are over rated. Y-pipe setups are making big power- but that's a different topic altogether. CONGRATS!!!!!

Patrick G

iTrader: (14)

I think it's acutally better because I can run less duration at .050" and achieve the same valve area under the curve of an XE-R lobed cam of larger duration. This gives me better low end and the same top end or the same low end and better top end (depending on which way I went).

My torque is pretty decent down low.
350 rwtq at 3000
375 rwtq at 3500
400 rwtq at 4000

436 peak torque at 4800.

Torque is about the same as cars with 224/224 112LSA cams down low and close to 236/244 cams up high. Street manners are close to a 224 cam now that I'm running speed density.