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Any 500 NA rwhp 6 speed combos?

Old 11-07-2018, 08:30 AM
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Originally Posted by flintwrench69 View Post
I have a 416 LS3 that I put together 3 yrs ago. It has GM CNC LS3 821 heads 68cc chambers hollowstem valves unmilled cometic .040 gaskets & a domed valve relief Wiseco piston 11.5:1 CR. I bought everything new. I went with a 6.2 block to run the square port heads & stock intake over some more expensive aftermarket heads & high dollar intake as the stock stuff works very well & is much cheaper. I've been very pleased with the performance
These are great heads and what I recommend too. What cam did you use with that combo?

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Old 11-07-2018, 08:56 AM
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Originally Posted by cam View Post
These are great heads and what I recommend too. What cam did you use with that combo?
custom cam by Martin Smallwood. 242/256 .629 .609 113+4 & was degreed I had a local machine shop put shortblock together I did the rest. I got a deal on the heads bought them nib in tech classifieds for $1100 shipped

Last edited by flintwrench69; 11-07-2018 at 09:07 AM.
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Old 11-07-2018, 09:00 AM
  #83  
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Thats a pretty aggressive cam, What kind of numbers did it make? Or trap speed? Hows the round town driving behavior?
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Old 11-07-2018, 10:22 PM
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Originally Posted by cam View Post
Thats a pretty aggressive cam, What kind of numbers did it make? Or trap speed? Hows the round town driving behavior?
I've drove the car everywhere & 80+ miles to the track, peeled off 1.4 60s with 6500 rpm clutch dumps & drove it home every time. High 10s on motor 127-128 but has been 130 once on a very cool day. Made 513whp 482tq through TSP TDs. 20 mpg highway, can drive the car however ya want idle is a lil lopey & takes a few minutes to idle on its own but after that perfect!
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Old 11-07-2018, 10:31 PM
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Thats VERY respectable. 130 trap = badass
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Old 11-07-2018, 11:13 PM
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Originally Posted by cam View Post
Thats VERY respectable. 130 trap = badass
It is but I wanted a lil more so it's got spray on it now. Almost in the 9s on a lil 100 shot. Had to soften up the launch rpm so it wouldn't hit the tires too hard
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Old 11-08-2018, 05:22 AM
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Originally Posted by flintwrench69 View Post
I've drove the car everywhere & 80+ miles to the track, peeled off 1.4 60s with 6500 rpm clutch dumps & drove it home every time. High 10s on motor 127-128 but has been 130 once on a very cool day. Made 513whp 482tq through TSP TDs. 20 mpg highway, can drive the car however ya want idle is a lil lopey & takes a few minutes to idle on its own but after that perfect!
Badass! Whats your best e.t on motor? How much does the car weigh ?
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Old 11-08-2018, 07:56 AM
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Originally Posted by Tuskyz28 View Post
Badass! Whats your best e.t on motor? How much does the car weigh ?
10.84 car weighs 3320 without me
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Old 11-08-2018, 11:22 AM
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Awesome results flintwrench. Strong setup. Along with the button def a force to be reckoned with.
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Old 11-11-2018, 06:08 PM
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578 hp 515 tq to the tires with a 405"LS2
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Old 11-12-2018, 12:00 PM
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5.7 block w/ 4.100 crank and 243's made 498/502tq
https://ls1tech.com/forums/dynamomet...yrs-later.html

ran high 10's @129mph n/a

low 10's @138mph on 120 shot
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Old 11-12-2018, 02:07 PM
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Originally Posted by cdubbzz View Post
5.7 block w/ 4.100 crank and 243's made 498/502tq
https://ls1tech.com/forums/dynamomet...yrs-later.html

ran high 10's @129mph n/a
https://youtu.be/FKbWORt1dkE

low 10's @138mph on 120 shot
https://youtu.be/zkWe89w88Ak
What happened with that nasty 408 you put together? Made 565whp
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Old 11-12-2018, 02:22 PM
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This was only a 10.60 pass on the 100 shot didn't look at controller screen had it on a 1 second delay. Also had launch controller set lower at 6k so that killed my 60 ft some (1.57 vs 1.43) Went 10.12 with no delay right after but nobody got a clip of that one. Tried uploading last week but here it is!

Last edited by flintwrench69; 11-12-2018 at 02:35 PM.
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Old 11-12-2018, 02:48 PM
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Originally Posted by flintwrench69 View Post
What happened with that nasty 408 you put together? Made 565whp
First track outing went 6.40's to 1/8 but 4L80 wouldn't shift right, parted it out (heads are on a friends 8sec Drag Wk Nova)
This pump gas 434ci is going in this week with a T400...never go full retard!
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Old 11-12-2018, 04:28 PM
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4.155 bore ls7? What heads, compression and how big is the cam? Nice mill...Piecing a 428 together and hoping to see at least 775.
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Old 11-12-2018, 05:37 PM
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Originally Posted by cdubbzz View Post
First track outing went 6.40's to 1/8 but 4L80 wouldn't shift right, parted it out (heads are on a friends 8sec Drag Wk Nova)
This pump gas 434ci is going in this week with a T400...never go full retard!
You had an M6 setup in the car when it was 1st done correct?
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Old 11-12-2018, 07:31 PM
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Originally Posted by flintwrench69 View Post
You had an M6 setup in the car when it was 1st done correct?
Had M6 mated to 408 for some dyno runs then swapped to 4l80
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Old 11-12-2018, 08:22 PM
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You could always just pick up a used pullout LS7 (Corvetteforum.com) for around $7K... swap the cam to something more aggressive and easily make 500rwhp on 91 octane.

Cubic inches will make your goals waaaaay easier and increase longevity. The increased torque of a 416/427ci engine is no comparison to a 364/376ci engine.
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