Top hp
Senior Member
Joined: 06-29-2008
Posts: 527
From: Suburban Chicago
SPPD, not knockin' or yappin' your #'s! All this just adds to the crap that I throw at one of my older brothers 'bout these little hotrods. He doesn't believe the SS is able to out run most of his mid 60's muscle car collection. I personally have out ran his 65 Nova with a zz4 block, chopped rear blah blah blah. (Yea the one I'm tryin' to buy from him) the comment 'bout the bar....you know.....track officials etc.....And d@mn, ya'll puttin' down some good quarter times for a station wagon.
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Senior Member
Joined: 06-29-2008
Posts: 527
From: Suburban Chicago
Just had the local muffler shop weld in a better flowing muffler. Its still pretty quiet, but sounds a little better when I jump on it. I doubt if it is giving me any additional HP, and if it is its prob only 1-3 maybe. I have heard that our stock mufflers are pretty good with flow. I will probably add a full Cat-Back at some point w/ 3 inch pipe, but for now this is my DD and dont wanna make the kiddo's go deaf in the back seat. Plus, we have emmissions testing over here so I need to comply with the law
SPPD
Senior Member
Joined: 05-13-2008
Posts: 2,075
From: Knoxville, TN
09 SS w/ automatic tranny, GM Turbo upgrade w/ Hahn DP and exhaust here. My dyno sheet + vid's are in my gallery but IIRC I put down 260ish hp and 250 lbs/tq at the wheels in my only dyno run. It seemed like there was more power to be put down, but I couldn't fully figure out how to have them run it on the dyno without the TC kickin in in Comp. Mode. If you're looking for Crank HP, that varies w/ the dyno and weather conditions the day you dyno the car. Crank HP is always more than wheel HP due to drivetrain losses.. Crank HP figures typically add anywhere from 18% to as much as 25% over what you have at the wheels (again depewnding on the type of dyno + weather conditions), but the important number is what's produced at the wheels since THAT'S what gets you scootin' down the road quickly!
Later
Allex
My dyno sheet + vid's are in my gallery but IIRC I put down 260ish hp and 250 lbs/tq at the wheels in my only dyno run. It seemed like there was more power to be put down, but I couldn't fully figure out how to have them run it on the dyno without the TC kickin in in Comp. Mode. If you're looking for Crank HP, that varies w/ the dyno and weather conditions the day you dyno the car. Crank HP is always more than wheel HP due to drivetrain losses.. Crank HP figures typically add anywhere from 18% to as much as 25% over what you have at the wheels (again depewnding on the type of dyno + weather conditions), but the important number is what's produced at the wheels since THAT'S what gets you scootin' down the road quickly! Later
Allex
Senior Member
Joined: 11-18-2008
Posts: 744
From: Oak Harbor, Washington
Mine stock Dyno'd out to 244.67 whp and 250.04 tq done at 60 degrees and 20% humidity in April of 09, after all the mods exhaust, stage 1 and new charge piping 276.57 whp and 283.02 tq at 66 degrees and 45% humidity in June of 09 which works out to approx 315 hp per Vince from Trifecta, now after the Trifecta tune who knows, hope that helps.
Member
Joined: 07-14-2007
Posts: 75
From: Ohio
Here is what I have, list of mods and dyno graphs. http://www.turbosystem.com/New_Folder/HHR%20SS.htm
PS. car is still for sale.
PS. car is still for sale.
Senior Member
Joined: 07-15-2009
Posts: 2,070
From: Waterbury CT
Later
Allex
