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Old 02-04-2011, 08:29 PM   #1
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426 300C SRT8 with a 8.3L Whipple

First start up with the new blower. Idle is set @ 1100.



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Old 02-04-2011, 08:38 PM   #2
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Um... Interesting. In the dyno video it sure seemed to take a long time to get going once the hammer was dropped but once it did.... WHOA!
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Old 02-04-2011, 08:46 PM   #3
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Um... Interesting. In the dyno video it sure seemed to take a long time to get going once the hammer was dropped but once it did.... WHOA!
Its the dyno that does that. It holds the car at a load for a few seconds then lets it ramp up.
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Old 02-04-2011, 08:48 PM   #4
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Its the dyno that does that. It holds the car at a load for a few seconds then lets it ramp up.
I've seen slews of cars dynoed and it seems most highly modified autos do that. I figured it was a torque converter thing when you mash it it won't let it go all at once. What did the C put down?
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Old 02-04-2011, 08:55 PM   #5
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I've seen slews of cars dynoed and it seems most highly modified autos do that. I figured it was a torque converter thing when you mash it it won't let it go all at once. What did the C put down?
On this dyno, a little over 700...I know it seems low, but for comparison full bolt on, supercharged(10psi+) LS3's have a hard time cracking 450rwhp.

Goal is to hit 8-850. Should be good enough for mid to high 9's at full weight (4400lbs). Alot easier said than done tho.
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Old 02-04-2011, 09:00 PM   #6
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On this dyno, a little over 700...I know it seems low, but for comparison full bolt on, supercharged(10psi+) LS3's have a hard time cracking 450rwhp.

Goal is to hit 8-850. Should be good enough for mid to high 9's at full weight (4400lbs). Alot easier said than done tho.
Wow that's a very conservative dyno. S/c'ed LS3 with all the goodies are good for considerably more. That's why I never read too deep into numbers. My car put down 410/415 where someone with less stuff put down more on a different dyno. It's all relative. We do dyno days for fun. Run a ton of pulls in one day and puff our chests out but in the end... it's just a numbers game!

I really like 300Cs. Looks great! Sounds killer too!! Not so sure I like the blower in intake sticking up but not like you could shoe horn that puppy in!!!
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Old 02-04-2011, 09:05 PM   #7
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Wow that's a very conservative dyno. S/c'ed LS3 with all the goodies are good for considerably more. That's why I never read too deep into numbers. My car put down 410/415 where someone with less stuff put down more on a different dyno. It's all relative. We do dyno days for fun. Run a ton of pulls in one day and puff our chests out but in the end... it's just a numbers game!

I really like 300Cs. Looks great! Sounds killer too!! Not so sure I like the blower in intake sticking up but not like you could shoe horn that puppy in!!!
lol thanks for the compliments. I know it doesnt go well with everyones taste but its still pretty bad a$$ IMO. This dyno is crazy low thats why we nicknamed it the HeartBreaker. We've had some pretty p!ssed off guys leave this place after there car dyno's as much as 150rwhp less than it did somewhere else. Try to explain to them its just a number and really doesnt mean chit but most of them just cant grasp the concept. lol
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Old 02-04-2011, 09:13 PM   #8
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I hear ya. I used to have a bone stock LS2 Corvette and I could not get some people to grasp why my slightly modified LS3 Camaro was slower... "but... Doesnt your Camaro have like 70 more HP???". I actually calculated it all out for one guy... Got really carried away using weight, gearing, coefficient of drag... in the end it came out that a stock Camaro would need like 100 more HP to be a theoretical equal to the Vette which I don't have. I tried telling him not to get caught up in the numbers... it's a whole pkg. He didn't get it! Some ppl are only concerned about peak HP. Me, I'm more after torque. I don't care how "fast" a car is... it's how QUICK it gets there!!!
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Old 02-04-2011, 09:27 PM   #9
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Originally Posted by jrhaus76 View Post
I hear ya. I used to have a bone stock LS2 Corvette and I could not get some people to grasp why my slightly modified LS3 Camaro was slower... "but... Doesnt your Camaro have like 70 more HP???". I actually calculated it all out for one guy... Got really carried away using weight, gearing, coefficient of drag... in the end it came out that a stock Camaro would need like 100 more HP to be a theoretical equal to the Vette which I don't have. I tried telling him not to get caught up in the numbers... it's a whole pkg. He didn't get it! Some ppl are only concerned about peak HP. Me, I'm more after torque. I don't care how "fast" a car is... it's how QUICK it gets there!!!
LMAO! Couldnt agree with you more bro...
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Old 02-04-2011, 09:52 PM   #10
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your gonna have to put a hole in your hood.
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Old 02-04-2011, 10:57 PM   #11
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your gonna have to put a hole in your hood.
Already done.







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Old 02-04-2011, 11:06 PM   #12
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Originally Posted by BigHemiSrt View Post
On this dyno, a little over 700...I know it seems low, but for comparison full bolt on, supercharged(10psi+) LS3's have a hard time cracking 450rwhp.

Goal is to hit 8-850. Should be good enough for mid to high 9's at full weight (4400lbs). Alot easier said than done tho.
A full bolt on LS3 with a blower at 10 psi would be right under 600 rwhp. Where did you come up with 450 rwhp? An auto with a blower on no bolt ons makes more than that at 6 psi.
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Old 02-05-2011, 01:55 AM   #13
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A full bolt on LS3 with a blower at 10 psi would be right under 600 rwhp. Where did you come up with 450 rwhp? An auto with a blower on no bolt ons makes more than that at 6 psi.
re-read his posts
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lol thanks for the compliments. I know it doesnt go well with everyones taste but its still pretty bad a$$ IMO. This dyno is crazy low thats why we nicknamed it the HeartBreaker. We've had some pretty p!ssed off guys leave this place after there car dyno's as much as 150rwhp less than it did somewhere else. Try to explain to them its just a number and really doesnt mean chit but most of them just cant grasp the concept. lol
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Old 02-05-2011, 02:46 AM   #14
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Seems very overkill. . . what kind of dyno is it that reads that low? The lowest I've ever seen are dyno dynamics and even they don't read nearly as low as you say this one does. I'm assuming this is more for nostalgia than outright performance because you could achieve the same output with a far smaller blower and have less parasitic loss. Still pretty cool.
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Old 02-05-2011, 04:12 AM   #15
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re-read his posts
Thank you
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Originally Posted by 8cd03gro View Post
Seems very overkill. . . what kind of dyno is it that reads that low? The lowest I've ever seen are dyno dynamics and even they don't read nearly as low as you say this one does. I'm assuming this is more for nostalgia than outright performance because you could achieve the same output with a far smaller blower and have less parasitic loss. Still pretty cool.
It is very much overkill, that is the point. They could have easily put a 4.X L blower on there and make as much power as this one, but even easier because as you mentioned less parasitic loss.

The dyno is a Dyno Dynamics. Bring some cars down to New Orleans and ill show you just how low it reads. They had a corvette dyno day and had several pro charged and vortech supercharged vettes and all of them were in the 430-440 range. They even had a guy with a C5 that has a C5R block (427) with all the goodies, trick flow heads, nice healthy cam,fast intake...I wanna say the guy said his car put down in the very very high 500's on another dyno (dynojet i believe) well he pown down 47x on that day and he was also the most powerful vette there that day.

I remember the first car they dyno'd. It was a cai,exhaust,t-stat,tuned SRT8 6 speed challenger...289rwhp.

Its funny cause my car "only" put down 412rwhp but im running times and trap speeds of some cars that have put down as high as 55x rwhp. Im speaking of our heavy mopars not anything ford or gm.
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Old 02-05-2011, 05:24 AM   #16
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re-read his posts

Yeah, I apologize. I didn't realize that he was referring to that rwhp on that specific dyno. Just goes to show you what 7 years of college is gd for!! I prob shouldn't skim through post. But more importantly, DAMN, that dyno is way low.


That's one badass car. Gd luck with the tires!!
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Old 02-05-2011, 05:59 AM   #17
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Old 02-05-2011, 06:41 AM   #18
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Yeah, I apologize. I didn't realize that he was referring to that rwhp on that specific dyno. Just goes to show you what 7 years of college is gd for!! I prob shouldn't skim through post. But more importantly, DAMN, that dyno is way low.


That's one badass car. Gd luck with the tires!!
lol...M&H's work really well. So good that when it was @ about 620rwhp with the old 671 Roots Blower it snapped a 1000HP DSS Axle.

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Just be careful you do not suck a bird or small child through that intake!
lmao
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Old 02-05-2011, 04:26 PM   #19
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Thank you


It is very much overkill, that is the point. They could have easily put a 4.X L blower on there and make as much power as this one, but even easier because as you mentioned less parasitic loss.

The dyno is a Dyno Dynamics. Bring some cars down to New Orleans and ill show you just how low it reads. They had a corvette dyno day and had several pro charged and vortech supercharged vettes and all of them were in the 430-440 range. They even had a guy with a C5 that has a C5R block (427) with all the goodies, trick flow heads, nice healthy cam,fast intake...I wanna say the guy said his car put down in the very very high 500's on another dyno (dynojet i believe) well he pown down 47x on that day and he was also the most powerful vette there that day.

I remember the first car they dyno'd. It was a cai,exhaust,t-stat,tuned SRT8 6 speed challenger...289rwhp.

Its funny cause my car "only" put down 412rwhp but im running times and trap speeds of some cars that have put down as high as 55x rwhp. Im speaking of our heavy mopars not anything ford or gm.
Yeah dyno dynamics are devastatingly low, but it seems they are awesome for tuning purposes.
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Old 02-05-2011, 04:59 PM   #20
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i wanna see a 5th gen camaro with a set up like that on it.
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Old 02-05-2011, 11:54 PM   #21
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Yeah dyno dynamics are devastatingly low, but it seems they are awesome for tuning purposes.
Funny that you say that. The dyno reads very low, but it is very consistent. Numbers dont jump around much. You can make 10 pulls in they all will be within 1-3 hp of one another, sometimes a fraction of a hp.
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Old 02-06-2011, 01:18 AM   #22
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Killer looking car. Why don't you strap it down on a different dyno to get a more accurate number? I would definitely do it if it was my car.
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Old 02-06-2011, 01:21 AM   #23
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Killer looking car. Why don't you strap it down on a different dyno to get a more accurate number? I would definitely do it if it was my car.
I'd be much more interested knowing how fast it can do the 1/4.
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Old 02-06-2011, 03:37 AM   #24
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I'd be much more interested knowing how fast it can do the 1/4.
X2...I wouldnt say its any more inaccurate than the 900rwhp it might put down on lets say a dynojet else where.

These are all very rough guesstimates. Lets say the engine is making 630bhp NA, now add 300hp from the blower. Looking @ 930bhp minus 15% drive train loss, is what? Roughly 790rwhp?? Im almost certain this car would make 850-900 rwhp on some of the more generous dyno's out there. So searching for that typical inflated number might make you feel all warm and fuzzy on the inside but i wouldnt say its any more accurate than the super low ball number.

I would say with a 1.6 sixty foot (decent traction) this car SHOULD run mid-low 10's in the 134-137mph area. As you know alot a variables. Take some weight out with perfect weather and track prep i could see it possibly running a 9sec pass.

For a comparision, the most my car put down on this dyno was 424rwhp and has gone a best of 11.6@118mph @ 4300lbs. So add a couple hundred lbs (blower+heavier driver) and 300rwhp and take a guess @ what it would run.
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Old 02-10-2011, 02:53 PM   #25
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Just be careful you do not suck a bird or small child through that intake!
LOL!!!

OP, very powerful and unique setup. I'm sure you enjoy it a great deal.
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