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Thread: How much RWHP for my 408
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04-23-2007, 07:05 PM #1
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- Sep 2005
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- East Tennessee
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Silver- 2000 Z/28
How much RWHP for my 408
Just checking to see if any one could give me an opinion on how much power my new motor will make.
408 6 speed
TSP 244/248 .612/.615 113 LSA
11:1
Stage 3 PRC 2.08/1.60
90mm FAST
90mm TB
FAST 36lb injectors
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04-25-2007, 01:33 PM #2
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04-25-2007, 02:05 PM #3
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- East Tennessee
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Silver- 2000 Z/28
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04-25-2007, 02:10 PM #4
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04-30-2007, 05:40 PM #5
Yeah im kinda wondering the same thing because I just started building my 408/l92/l76 with a 242/248 610/618. I have seen anywhere from 470-540 but what i like about the 408s is the torque curve
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04-30-2007, 06:05 PM #6
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Silver- 2000 Z/28
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05-02-2007, 04:08 PM #7
No i have only seen one occasion where the torque was higher but something had to have been wrong with the tune. The reason i like the torque curve is because they are making a lot of torque all throughout the rpm range. I live in Canton just west of Asheville, you must be just over the line?
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05-02-2007, 05:40 PM #8
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Silver- 2000 Z/28
Yeah, Im just across the hill on 26. Do you know of any good dyno shops in your area? Im going to drive about 150 miles to Decatur, Tennessee. Have you ever heard of Speed Engineering. Corvette Magazine rated them as the best tuning shop in Tennessee 2 years in a row.
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05-02-2007, 06:27 PM #9
Oh ok you are pretty close by, the only dyno shops in my area is WNC Speed and Custom located in Asheville just off of I-40 i think. That would probobly be a closer drive for you but i do not know how much experience they have so i would go to the one in Tenn. If you are interested in WNC then i can get you more info and dirrections.
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05-06-2007, 09:11 AM #10
490hp 475 lbft. is my guess...get it dyno'd and let us know!
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05-06-2007, 09:51 AM #11
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05-06-2007, 11:26 AM #12
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Red Tint Jewelcoat- 2008 Trailblazer SS
Suspension plays no role in determining dyno numbers.
Drivetrain weight does. Driveshaft, rearend size, flywheel, etc...
M6 will dyno higher with the stock rearend in both cars.
If I had the stock rearend in mine...I would have probably seen 550 RWHP. 9" eats power.
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05-06-2007, 12:45 PM #13
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Silver- 2000 Z/28
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05-06-2007, 02:28 PM #14
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05-06-2007, 02:28 PM #15
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05-06-2007, 03:33 PM #16
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05-06-2007, 03:59 PM #17
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05-06-2007, 08:14 PM #18
If he had different heads I think he could do more...but I just havent seen the PRC heads do exceptionally well with the big cube motors. They do good on stock cubes motors, but not great. I dont know, maybe its the camshaft choice people have and they will do great for this guy, but I think better heads would be in order for bigger numbers. But you cant beat the price of the PRC's!!
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