what is the highest horsepower 346ci n/a?
02-19-2008 | 02:40 AM
#2
Tony@AFR & Patrick G have both made over 500rwhp with 346 cube engines and remained streetable.
I am shooting for mid 400's with my 12.2:1 347 and mildly ported 6.0L heads. I may change to a set of TFS heads in search of 500+rwhp later down the road.
I am shooting for mid 400's with my 12.2:1 347 and mildly ported 6.0L heads. I may change to a set of TFS heads in search of 500+rwhp later down the road.
02-19-2008 | 08:30 AM
#5
My LS6 346 Cid NA Stock Shortblock Pump Gas is producing 511 rwhp and 455 rwtq...and it is still my Streetable daily driver.
Now refering to the OP "what is the highest horsepower 346ci n/a?" I am convinced that in the racing world some highest specific HP are reachable...
Solid Roller, Dry Sump, Victor Jr Intake, specific headers/exhaust, specific heads and camshaft for an optimized power band from 5800rpm to 8200rpm on race fuel and serious power numbers would show-up!!!
Horse Power are very closely Money/"investment" related...
Anyway for info:
Christian
Now refering to the OP "what is the highest horsepower 346ci n/a?" I am convinced that in the racing world some highest specific HP are reachable...
Solid Roller, Dry Sump, Victor Jr Intake, specific headers/exhaust, specific heads and camshaft for an optimized power band from 5800rpm to 8200rpm on race fuel and serious power numbers would show-up!!!
Horse Power are very closely Money/"investment" related...
Anyway for info:
Christian
Last edited by miami993c297; 02-19-2008 at 08:49 AM. Reason: spelling
02-19-2008 | 08:39 AM
#6
I believe Allan Futral made somewhere in the 540s with his solid roller LS1. Phil99vette also made in the 530s or 540s with a solid roller 347. LS1 Joe made in the 510s or 520s with a hydraulic cammed LS1. While it's difficult to make over 500 rwhp with just heads and cam, it's even more difficult to do it with every-day daily-driving street manners like Christian and others have done. 
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Last edited by Patrick G; 02-20-2008 at 08:11 AM.
02-19-2008 | 09:11 AM
#7
Wow, 511/455 streetable NA horsepower with a 346 is just awesome. And the other numbers thrown out there (Pat G and others) are just as impressive, especially the hydraulic roller setups.
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02-19-2008 | 11:21 AM
#9
02-19-2008 | 12:11 PM
#10
11 Second Club
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From: Was New Orleans, but swam to Baton Rouge
Another vote for Futral. I also believe he still holds the record for the fastest NA 346 six speed car.
Here is Allan's 9 second run.
https://ls1tech.com/forums/showthrea...529&highlight=
Here is Allan's 9 second run.
https://ls1tech.com/forums/showthrea...529&highlight=
Last edited by Sigforty; 02-20-2008 at 12:26 PM.
02-20-2008 | 06:48 AM
#11
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Car should weigh in just under 3200 and I weigh 250. 3450 +/- LOL
As far as the 123.6 mph trap that is 3.42 gears. Not optimal for the track, but still pretty damn good. I think had I gone with the 3.73's 125+ traps wouldn't have been out of the question. However my et's would still suck because I can't seem to get traction until 3rd gear, even with Nitto DR's.
02-20-2008 | 07:41 AM
#12
Fixed it for you. Phil's now working on an insane huge turbo LSX Mustang conversion
https://ls1tech.com/forums/conversions-swaps/637163-so-here-s-game-plan-00-mustang-lsx-huge-turbo.html
https://ls1tech.com/forums/conversions-swaps/637163-so-here-s-game-plan-00-mustang-lsx-huge-turbo.html
02-20-2008 | 09:22 AM
#13
We put down 530/480 with a set of box stock AFR 205s and a hydraulic G5xX cam, it backed it up at the track, 10.40 (vette) @ 140. Still the fastest NA 346, not the quickest.
http://www.youtube.com/watch?v=qrYJDCoQSnM
http://www.youtube.com/watch?v=qrYJDCoQSnM
02-20-2008 | 09:36 AM
#14
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From: Charlotte, NC
We put down 530/480 with a set of box stock AFR 205s and a hydraulic G5xX cam, it backed it up at the track, 10.40 (vette) @ 140. Still the fastest NA 346, not the quickest.
http://www.youtube.com/watch?v=qrYJDCoQSnM
http://www.youtube.com/watch?v=qrYJDCoQSnM
02-20-2008 | 09:43 AM
#15
https://ls1tech.com/forums/showthrea...ght=hallsville
4 years ago, I outlined the entire setup. Nothing crazy, just on top of the game four years ago.
4 years ago, I outlined the entire setup. Nothing crazy, just on top of the game four years ago.
02-20-2008 | 09:48 AM
#16
Watch the video. It is an SCCA road racer that was modified to drag with this setup at the end of the season. Full carbon body etc. So ya, it was pretty light. You can see the way it dances across the track. Must be hell to drive 
02-20-2008 | 10:47 AM
#17
Car should weigh in just under 3200 and I weigh 250. 3450 +/- LOL
As far as the 123.6 mph trap that is 3.42 gears. Not optimal for the track, but still pretty damn good. I think had I gone with the 3.73's 125+ traps wouldn't have been out of the question. However my et's would still suck because I can't seem to get traction until 3rd gear, even with Nitto DR's.
As far as the 123.6 mph trap that is 3.42 gears. Not optimal for the track, but still pretty damn good. I think had I gone with the 3.73's 125+ traps wouldn't have been out of the question. However my et's would still suck because I can't seem to get traction until 3rd gear, even with Nitto DR's.
By any chance do you have vids of your car ? I would love to see the idle of that cam.
02-20-2008 | 11:59 AM
#19
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From: Charlotte, NC
I did and it seems the race weight is 2950, still 140mph out of a n/a 346 making 530rwhp seems nuts to me especially weighing almost 3000lbs. Being 8mph faster than the 2nd fastest n/a 346 seems even more crazier considering its only maybe 300lbs max lighter.
