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Kjones

Not-quite-so-new-guy
Mar 6, 2019
6
3
So I'm new to the forum thing but here it goes. I have a 85 monte carlo ss that's swapped with a lq9 and a 4l80e transmission behind that the motor was a carb set up but I switched to fuel injected I want to make 430-450rwhp I have cam, heads, intake and longtube headders, with 2.5in exshast just wanna know if I'll be in the ballpark range of the rwhp Im looking for and if not what else could I do. And what are you guys thought on 1/4 mile times. Looking for everybody's knowledge and input much appreciated.
SPECS: 236/246 cam
4000 yank stall
373 rear end
1 ³/⁴ longtubes
799 heads
Tbss/nbss intake
 

500/600

Royal Smart Person
Nov 17, 2018
1,169
113
West Virginia
Head porting will be the key to getting you to the numbers that you want.
 

lilbowtie

Comic Book Super Hero
Jan 7, 2006
3,460
113
Canton Mi
If you can obtain that rwhp you have the capability mid 11's - Your set-up low 12's. With that kind of HP I hope you have something bigger than a 7.5 rear.
 
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500/600

Royal Smart Person
Nov 17, 2018
1,169
113
West Virginia
My 2007 6.1 Hemi heads flow 360cfm ported. Similar camshaft, larger throttle body, cnc ported intake, CAI, 1-7/8” long tubes, dyno tuned, and makes 461rwhp. And I cannot imagine needing a 4000 stall.
 
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