If I were to swap a big block into mine I would do a 720 or 620 hp 572. I would have to swap the LS1 back in at inspection time but it would be big block the rest of the time. The sad thing is I would be driving the Astro during the week to and from work, no fun.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
I put a 8.1L in my 67 short bed if that counts.
the torque was amazing. I had a TH400, stock heavy duty torque converter, and 3.73 gears with eaton posi, and 295/50 R15s.
I was running a Do It Yourself fuel injection controller, megasquirt, controling fuel, and wasted spark ignition.
I installed a ZZ502 crate engine camshaft. The 8.1 responded very well to the camshaft except that I had intake valve to piston contact. A few weeks after the install 2 pistons fell apart.
The 8.1 is at the machine shop getting a sleeve in #6 hole and being bored .030.
pictures and other information on my website.
www.lt1swap.com
You mentioned running 11s on your website, is that with the 8.1 or the ol'355?
Glad to see a successful engine swap. Please post up any track results including 60ft and/or any dyno #s.
99 C5 cam/boltons 400rwhp
10 Sierra CC 6.2
03 Suburban 5.3
umm 8.1 = gas guzzler like whoa. i mean the whole point is practical daily drivers running 12 to 10 second quarters not a truck that gets 3.2 mpg highway haha sorry but the 6.0 or 7.0 ls7 is all anyone here could want i would think! :flipoff:
<div class='quotetop'>QUOTE(Allstar55566 @ Aug 28 2006, 09:19 PM) [snapback]62790[/snapback]</div>umm 8.1 = gas guzzler like whoa. i mean the whole point is practical daily drivers running 12 to 10 second quarters not a truck that gets 3.2 mpg highway haha sorry but the 6.0 or 7.0 ls7 is all anyone here could want i would think! :flipoff:
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If wonder what kind of gas mileage an LS7 would get in a truck. Considering it's rated at 28 mpg in the Vette.
what gears are the vettes running? and do the new ones have D.O.D.?
DANIEL CAMMED SS 13.46 @ 98.17-- 8.58 @ 80.31
2003 Silverado SS / LQ9 6.0L / Wheatley 93 Octane Tune / 224/228 .581 .588 110lsa / Patriot Gold Dual Springs / Comp Hardened Push Rods / Circle D 3800 stall / Pacesetter LT's / 4:10 Gears / Transgo HD-2 Shift Kit / K & N Cold Air Intake / Corvette Servo / Aeroforce Interceptor / Autometer Narrorband(Wideband on the way) / Mobile 1 Synthetic / Single Chamber Flows with X Pipe / Cats Delete with Cutouts
I'm not sure about the gears. But I am sure the Vette does not have D.O.D.
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