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Old 03-27-2017, 07:30 PM   #1
07-SRT
 
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Numbers back from head install

not what I expected. Before. SAE479/424 after SAE 490/449.Same dyno
The tq increase Im happy with but 11hp...
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Old 03-27-2017, 07:45 PM   #2
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Quote:
Originally Posted by 07-SRT View Post
not what I expected. Before. SAE479/424 after SAE 490/449.Same dyno
The tq increase Im happy with but 11hp...
What are your supporting mods? I would be happy with 25 TQ too! Are these ported stockers or new CNC heads?
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Old 03-27-2017, 07:46 PM   #3
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Quote:
Originally Posted by 07-SRT View Post
not what I expected. Before. SAE479/424 after SAE 490/449.Same dyno
The tq increase Im happy with but 11hp...
Track time before and after?
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Old 03-27-2017, 07:49 PM   #4
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What are your supporting mods? I would be happy with 25 TQ too! Are these ported stockers or new CNC heads?
Cam, LT headers, Cai..ported stockers that were milled.20 and larger 1.60 exhaust valves...
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Old 03-27-2017, 07:52 PM   #5
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Track time before and after?
I just got the car back together Friday and tuned today.
So no post track times
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Old 03-27-2017, 07:56 PM   #6
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I just got the car back together Friday and tuned today.
So no post track times
I wouldn't get to disappointed yet then..... How does it feel to the cheek meter?
I only picked up 30hp and 20tq with heads but I also gained 5mph in the 1/4.

Be optimistic!
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Old 03-27-2017, 08:09 PM   #7
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I wouldn't get to disappointed yet then..... How does it feel to the cheek meter?
I only picked up 30hp and 20tq with heads but I also gained 5mph in the 1/4.

Be optimistic!
Feels lighter due to the tq increase and seems to pull through rpm range quicker...
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Old 03-27-2017, 08:12 PM   #8
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Well with +25 torque gain, +11 horsepower doesn't seem too bad given horsepower is a product of torque But as BFASTNOTLAST stated, let those ET's speak brother, be optimistic
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Old 03-27-2017, 08:24 PM   #9
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I gained 15/9 at the wheels. Take it to the track.
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Old 03-27-2017, 08:27 PM   #10
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That's not a bad gain for stock ported heads. Good luck man and get some passes in before the decent air goes away.
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Old 03-27-2017, 08:35 PM   #11
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That's not a bad gain for stock ported heads. Good luck man and get some passes in before the decent air goes away.
It already has here in Florida mid 80's all week....lol
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Old 03-27-2017, 08:50 PM   #12
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It already has here in Florida mid 80's all week....lol
You know as well as I do that's still not bad compared to what we will be dealing with 2+ months from now.

4 months straight of 95+ degrees and >90% humidity...Yuck. Makes me nauseous just thinking about it. Almost as bad is not being able to keep your car clean and dry for more than 24 hours in a row in the summer.
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Old 03-27-2017, 08:58 PM   #13
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What I like is useable data here. Baseline and end result.
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Old 03-27-2017, 09:00 PM   #14
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http://www.superchevy.com/features/s...-and-cam-test/
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