My 427 LS7 Firebird is complete! (video)
07-24-2006, 09:47 PM
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My 427 LS7 Firebird is complete! (video) I was at the shop tonight and took this video of the car in the dyno room 
I am planning on hitting the track this weekend...
http://s97997631.onlinehome.us/temp/427bird/427bird.wmv
I am planning on hitting the track this weekend...
http://s97997631.onlinehome.us/temp/427bird/427bird.wmv
07-25-2006, 06:40 AM
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Originally Posted by John B
Cool! How about some spec's on it? Did you run it on the dyno?
-sleaved LS2 block (4.125)
-Eagle 4" crank and rods
-ETP LS7 heads (untouched)
-LS7 intake (cleaned up)
-NW 90MM with custom bracket
-Hydraulic cam
-Morel Lifters
-Edelbrock stepped headers (1 3/4 to 1 7/8), Edelbrock Y, single 3" FLP electric cutout, Flowmaster catback
Other details about the car...
-Built 700R4 with MVB
-12 bolt with spool & 4.10's
-Car weighs ~3150lbs... looking to get it down to just under 3000lbs...
-You can see other details abou the by clicking on the photo below... since then I added Strange brakes all around along with a Madman rack...
We'll see what happens this weekend when I hit the track...
We experimented with several camshafts and picking the right one is a challenge as there is always a tradeoff between low end grunt and top end power... this is simmilar to what is seen in Jason from Katech's post about thier Torquer cam compared to the original cam they had in the Z06...
My setup does not make a good dyno queen, but we estimate crank HP to be in the 650HP range...
Last edited by vmax1500; 07-30-2006 at 09:12 PM.
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07-25-2006, 03:22 PM
#9
Well, I've got the old engine out, but now I'm just waiting for everything! I ordered a new UMI K-member to put her on, and I'm waiting on the engine from Mizfit Motorsports. Once I get them, I should have the car up and running in about a week tops, hopefully I can have one of my buddies give me a hand, will help it go a little faster 
After that, its off to Iraq again haha, atleast I'll be able to enjoy the engine for a couple weeks.
After that, its off to Iraq again haha, atleast I'll be able to enjoy the engine for a couple weeks.
07-25-2006, 03:36 PM
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Originally Posted by Haans249
Whats the ballpark dur on the cam?
I don't know the exact specs, but it's on the larger side of hydraulic cams...
What heads will you be using?
07-25-2006, 03:46 PM
#12
I thought that cam sounded pretty tame. I'm suprised you went with such low durations, unless thats duration at .200 haha. I ended up going with a 242/256 duration cam on a 113+2 LSA.
I went ahead and ran the LS7 heads/intake with the Katech PSI spring/retainer set good to .700 lift. I'm also running 11.5:1 CR with custom Diamond pistons. I'm hoping to make over 600hp to the wheels on my 6 speed.
I went ahead and ran the LS7 heads/intake with the Katech PSI spring/retainer set good to .700 lift. I'm also running 11.5:1 CR with custom Diamond pistons. I'm hoping to make over 600hp to the wheels on my 6 speed.
07-25-2006, 03:56 PM
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Originally Posted by Haans249
I thought that cam sounded pretty tame. I'm suprised you went with such low durations, unless thats duration at .200 haha. I ended up going with a 242/256 duration cam on a 113+2 LSA.
I went ahead and ran the LS7 heads/intake with the Katech PSI spring/retainer set good to .700 lift. I'm also running 11.5:1 CR with custom Diamond pistons. I'm hoping to make over 600hp to the wheels on my 6 speed.
I went ahead and ran the LS7 heads/intake with the Katech PSI spring/retainer set good to .700 lift. I'm also running 11.5:1 CR with custom Diamond pistons. I'm hoping to make over 600hp to the wheels on my 6 speed.
07-25-2006, 04:22 PM
#14
Originally Posted by vmax1500
That would be really impressive as it's over 700HP at the crank... one of the challenges when choosing a cam for the LS7 is getting low end grunt that you need in a stick car combined with top end power... keep us posted on the results!
Thats exactly true!! I was sure to spec the cam that left me with a decent DCR of ~8.3:1 and provided the valve events that we were looking for, which should provide for good low end grunt and top end power! Its not quite 700 hp at the crank, more like 680-690 depending on how you do the numbers, but very impressive non-the-less. I will keep everyone posted!
Thanks,
Adrian
07-25-2006, 04:59 PM
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Katech has been experimenting with different cams and they ended up with 640HP at the crank with thier peakier setup... this is simmilar to the numbers the shop I am working with are seeing... thier torquer cam is making 600HP with more grunt down low...
Wow that sounded MEAN! Can't wait to hear some numbers. 
