08 4.7L Dyno Numbers
Registered User
Joined: Apr 2010
Posts: 12
Likes: 1
I don't come on this forum very often but did want to come back and update this. I put my torque converter in finally this weekend, and my quad cab 4.7L really moves out pretty good now. Next time I go to the track I'll update how much it improves my time. I'm thinking it'll be a couple tenths faster. Unfortunately the heavy wheels and tires kill my acceleration. I probably won't go for a while though, I don't make it out there very often, I'm really just building the truck so I can have some fun on the street. Maybe I'll use the flashpaq to get a comparison of the before and after. That should at least be close.
Oh and I know a guy on another forum with a 2010 4.7L single cab, running 17" wheels with 26" slicks, flashpaq, airaid CAI, and muffler delete and he ran a 14.9. He now has mech fan delete, 180 tstat, ATI 25% underdrive pulley, and I think an aftermarket y pipe. He has 3.55 gearing and open diff, I think he is going to swap to 4.10 and LSD. He ought to have one heck of a runner there. He's hinted at either turbo or juice as well.
Oh and I know a guy on another forum with a 2010 4.7L single cab, running 17" wheels with 26" slicks, flashpaq, airaid CAI, and muffler delete and he ran a 14.9. He now has mech fan delete, 180 tstat, ATI 25% underdrive pulley, and I think an aftermarket y pipe. He has 3.55 gearing and open diff, I think he is going to swap to 4.10 and LSD. He ought to have one heck of a runner there. He's hinted at either turbo or juice as well.
Record Breaker
Joined: Jan 2011
Posts: 2,063
Likes: 5
From: Sandy, UT. (SLC Suburbs)
Those are amazing numbers for a N/A 4.7 man. Yea I just read about changing the tone wheels, sensors, coils, injectors to get the Delphi pcms to run hemis. That's some interesting stuff. Chebie makes a good buildable slushbox that's for sure.
Record Breaker
Joined: Jan 2011
Posts: 2,063
Likes: 5
From: Sandy, UT. (SLC Suburbs)
Here Steve, I got an exact measurement for you.
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Just kiddin'
I measured mine at 1 and 7/16ths. it's a biggun
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Just kiddin'
I measured mine at 1 and 7/16ths. it's a biggun
Last edited by FrenicX; May 3, 2012 at 01:29 AM.
Rookie
Joined: Sep 2011
Posts: 58
Likes: 0
Those are great numbers, especially for the older 4.7L.
I have good and bad news lol. My truck (according to the flashpaq) is slower in the 0-60 with the higher stall as compared to the stock stall. I'm pretty sure it's due to tire spin. I have big AT tires which probably aren't the best for launching, and an open differential. The best time I did before was 7.21, and now the best I have got is 8.11. About a second slower, but the tires are spinning for over a second so makes sense. I want to go to the track where it's sticky and see what it does. I can't imagine that it is actually slower....BTW the converter is a street edge 2800 stall. I was hoping with the stall I'd be at a 7.0 or faster.
I have good and bad news lol. My truck (according to the flashpaq) is slower in the 0-60 with the higher stall as compared to the stock stall. I'm pretty sure it's due to tire spin. I have big AT tires which probably aren't the best for launching, and an open differential. The best time I did before was 7.21, and now the best I have got is 8.11. About a second slower, but the tires are spinning for over a second so makes sense. I want to go to the track where it's sticky and see what it does. I can't imagine that it is actually slower....BTW the converter is a street edge 2800 stall. I was hoping with the stall I'd be at a 7.0 or faster.
Rookie
Joined: Sep 2011
Posts: 58
Likes: 0
Here's a video just to show. I've only had the converter in since last weekend so less than a week. And I've been riding my bike to work so have actually only driven the truck 2 days since then.
Only other mods are SC 91 tune(going to go back to the 93 tune soon, I overlaid the dynos and it's a fairly big difference...15ish lbft IIRC), airaid drop in, airaid modular intake tube, 180 tstat(even though it doesn't actually open at 180 deg...POS), and mechanical fan delete. Going to do a y pipe and magnaflow next.
Only other mods are SC 91 tune(going to go back to the 93 tune soon, I overlaid the dynos and it's a fairly big difference...15ish lbft IIRC), airaid drop in, airaid modular intake tube, 180 tstat(even though it doesn't actually open at 180 deg...POS), and mechanical fan delete. Going to do a y pipe and magnaflow next.
Last edited by snrusnak; May 3, 2012 at 07:56 AM.