LS1TECH - Camaro and Firebird Forum Discussion

Dynamometer Results & Comparisons Dyno Records | Dyno Discussion | Dyno Wars

Highest HP From 243 Heads?

Thread Tools
 
Search this Thread
 
Old 03-27-2018, 10:18 AM
  #21  
TECH Addict
 
gagliano7's Avatar
 
Join Date: Aug 2005
Location: Monroe,NY
Posts: 2,267
Likes: 0
Received 114 Likes on 91 Posts
LS1Tech 10 Year
Default
Originally Posted by tug686spd
I seen that car run at Englishtown badass. The only thing is that car was stripped down only a drivers seat inside.
gagliano7 is offline  
Reply Like
Old 03-27-2018, 10:33 AM
  #22  
TECH Addict
iTrader: (17)
 
AnotherWs6's Avatar
 
Join Date: Sep 2012
Location: Westchester, NY
Posts: 2,671
Likes: 0
Received 36 Likes on 30 Posts

Default
Originally Posted by gagliano7
I seen that car run at Englishtown badass. The only thing is that car was stripped down only a drivers seat inside.
I was going to mention this. It's badass, but I'm sure it's been put on a diet. Still evil.
AnotherWs6 is offline  
Reply Like
Old 03-27-2018, 10:39 AM
  #23  
TECH Senior Member
iTrader: (26)
 
kinglt-1's Avatar
 
Join Date: Jul 2005
Location: Ft. Wayne, IN
Posts: 5,814
Received 207 Likes on 146 Posts
LS1Tech 10 Year
Default
I have seen 550whp with a 416 stroker and right around 500whp with a high strung 346. I agree with others that dyno numbers don't mean much without a baseline.
kinglt-1 is offline  
Reply Like
Old 03-27-2018, 04:04 PM
  #24  
10 Second Club
iTrader: (8)
 
HioSSilver's Avatar
 
Join Date: Aug 2002
Location: Winchester, VA
Posts: 5,975
Received 478 Likes on 375 Posts
LS1Tech 20 Year Member
Default
A friend made like 630 crank on a engine dyno with a 346 and stock 243s. They can make good power. It's a hydraulic cammed dirt car engine.
HioSSilver is offline  
Reply Like
Old 03-06-2019, 11:41 PM
  #25  
10 Second Club
iTrader: (8)
 
HioSSilver's Avatar
 
Join Date: Aug 2002
Location: Winchester, VA
Posts: 5,975
Received 478 Likes on 375 Posts
LS1Tech 20 Year Member
Default
Well.....a year later bump and hopefully well find out before to long what my mild 346 243 headed build is gonna do.
HioSSilver is offline  
Reply Like
The following users liked this post:
AINT SKEERED (08-14-2019)
Old 03-17-2019, 12:36 AM
  #26  
Banned
 
Smokey B's Avatar
 
Join Date: Jan 2019
Posts: 1,747
Received 100 Likes on 90 Posts
Default
This head has some area.

https://www.corvetteforum.com/forums...g-results.html
Smokey B is offline  
Reply Like
Old 03-17-2019, 07:29 AM
  #27  
10 Second Club
iTrader: (8)
 
HioSSilver's Avatar
 
Join Date: Aug 2002
Location: Winchester, VA
Posts: 5,975
Received 478 Likes on 375 Posts
LS1Tech 20 Year Member
Default
I can't say I'm impressed with those results.
HioSSilver is offline  
Reply Like
Old 03-22-2019, 02:55 PM
  #28  
"I MAID THEESE"
iTrader: (3)
 
Mavn's Avatar
 
Join Date: Jul 2011
Location: Houston
Posts: 2,744
Received 675 Likes on 425 Posts

Default
Originally Posted by Smokey B
Horrible numbers lol I made 507 wheel only 416 with Stock 243's...
Mavn is offline  
Reply Like
Old 03-23-2019, 09:08 AM
  #29  
KCS
Moderator
iTrader: (20)
 
KCS's Avatar
 
Join Date: Mar 2005
Location: Conroe, TX
Posts: 8,853
Received 315 Likes on 213 Posts
LS1Tech 10 Year
Default
That was 510whp on 7 cylinders. Should have been about 583whp if all 8 were firing.
KCS is offline  
Reply Like
Old 03-23-2019, 10:24 AM
  #30  
10 Second Club
iTrader: (8)
 
HioSSilver's Avatar
 
Join Date: Aug 2002
Location: Winchester, VA
Posts: 5,975
Received 478 Likes on 375 Posts
LS1Tech 20 Year Member
Default
I'm hoping to get near 550whp with a 346 and messaged gmpp 243s. Hopefully my results will come sooner rather than later....but we all know how that goes down.
HioSSilver is offline  
Reply Like
Old 03-23-2019, 12:23 PM
  #31  
"I MAID THEESE"
iTrader: (3)
 
Mavn's Avatar
 
Join Date: Jul 2011
Location: Houston
Posts: 2,744
Received 675 Likes on 425 Posts

Default
Wonder what it traps tho lol
Mavn is offline  
Reply Like
Old 03-23-2019, 12:58 PM
  #32  
10 Second Club
iTrader: (8)
 
HioSSilver's Avatar
 
Join Date: Aug 2002
Location: Winchester, VA
Posts: 5,975
Received 478 Likes on 375 Posts
LS1Tech 20 Year Member
Default
We'll find out at some point. I'll be looking for 135+.
HioSSilver is offline  
Reply Like
Old 03-24-2019, 04:20 AM
  #33  
Banned
 
stilealive's Avatar
 
Join Date: Feb 2019
Posts: 514
Received 53 Likes on 41 Posts
Default
Morgan Motorsports made over 500 RWHP back in 2000. Their Aggressor 500 Head/Cam kit. Stock cubes.
stilealive is offline  
Reply Like
Old 06-14-2019, 08:51 AM
  #34  
TECH Fanatic
iTrader: (13)
 
LaBLKv6Z's Avatar
 
Join Date: May 2010
Location: Lafayette, Louisiana
Posts: 1,334
Received 211 Likes on 163 Posts
LS1Tech 10 Year
Default
I'm running PRC LS6 2.5 heads on my LS3 427. M6 Car weighs 3490 with me. With my current cam (239/252 .620/.596 111 lsa) it has trapped 127 in the quarter.
LaBLKv6Z is offline  
Reply Like
Old 06-14-2019, 08:56 AM
  #35  
10 Second Club
iTrader: (8)
 
HioSSilver's Avatar
 
Join Date: Aug 2002
Location: Winchester, VA
Posts: 5,975
Received 478 Likes on 375 Posts
LS1Tech 20 Year Member
Default
That's not that good.
HioSSilver is offline  
Reply Like
Old 06-14-2019, 09:04 AM
  #36  
TECH Senior Member
 
G Atsma's Avatar
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 21,468
Received 3,257 Likes on 2,535 Posts
Default
I agree. A 427 with 243's, no matter how good they are, is being choked. Bigger heads and smaller cam would help it.
G Atsma is online now  
Reply Like
Old 06-14-2019, 09:09 AM
  #37  
TECH Veteran
 
Tuskyz28's Avatar
 
Join Date: Sep 2014
Location: Mississippi
Posts: 4,808
Received 599 Likes on 413 Posts
Default
Originally Posted by G Atsma
I agree. A 427 with 243's, no matter how good they are, is being choked. Bigger heads and smaller cam would help it.
I Disagree. G~ Ive seen a 408ci motor with some serious ported 243 heads make over 500 rwhp threw a automatic and the car ran 9.9s in the quarter. Fourth gen camaro.
Tuskyz28 is offline  
Reply Like
Old 06-14-2019, 09:10 AM
  #38  
TECH Veteran
 
Tuskyz28's Avatar
 
Join Date: Sep 2014
Location: Mississippi
Posts: 4,808
Received 599 Likes on 413 Posts
Default
Originally Posted by HioSSilver
That's not that good.
Depending on the weight.....
Tuskyz28 is offline  
Reply Like
Old 06-14-2019, 09:14 AM
  #39  
TECH Senior Member
 
G Atsma's Avatar
 
Join Date: Jun 2016
Location: Central Cal.
Posts: 21,468
Received 3,257 Likes on 2,535 Posts
Default
Originally Posted by Tuskyz28
I Disagree. G~ Ive seen a 408ci motor with some serious ported 243 heads make over 500 rwhp threw a automatic and the car ran 9.9s in the quarter. Fourth gen camaro.
That's cool! Those ports had to be paper thin and getting some SERIOUS velocity! AKA SMOOOOTH ports!
But now, this is on a 408, where the poster above is on a 427. Would 19 cubic inches make that big a difference?
G Atsma is online now  
Reply Like
Old 06-14-2019, 09:16 AM
  #40  
TECH Veteran
 
Tuskyz28's Avatar
 
Join Date: Sep 2014
Location: Mississippi
Posts: 4,808
Received 599 Likes on 413 Posts
Default
Originally Posted by G Atsma
That's cool! Those ports had to be paper thin and getting some SERIOUS velocity! AKA SMOOOOTH ports!
But now, this is on a 408, where the poster above is on a 427. Would 19 cubic inches make that big a difference?
Depending on the head porter/cnc job you can run a bigger valve in the head. I 19 cubes larger is great but it would still perform if the head have a MEAN cnc job done to them.
Tuskyz28 is offline  
Reply Like



Advanced Search
Quick Reply: Highest HP From 243 Heads?


Reply Closed Thread Share

All times are GMT -5. The time now is 06:31 PM.