Dyno Guesses & Bench Racing Forum Horsepower Estimates | Racing Scenarios

LS 408 stroker build HP?

Thread Tools
 
Search this Thread
 
Old 06-17-2022, 01:07 PM
  #1  
Teching In
Thread Starter
 
Rassie's Avatar
 
Join Date: Jun 2022
Location: South Africa
Posts: 7
Received 5 Likes on 4 Posts
Default LS 408 stroker build HP?

LS 408 Stroker build.
Hi guy's. I am new to the group. My name is Rassie.
I am building a LS2 408 stroker. I have a
K1 4" crank,
K1 conrods,
Wisco 4.030 +5cc pistons
821 ported headsLs3 intake with standard trotle body.
Cam specs is.
VCM 532 camDuration215/223Lobe Separation@ 112Valve Inlet.583" 14.8mmExhaust.583".
I am planing to replace my single valve springs with duel springs and roller rockers.
Manley 26362134KS - Manley NexTek Valve Spring and Retainer KitsCOMP Cams 1678-16 - COMP Cams Ultra Pro Magnum Rocker Arms.
What hp am can I expect?.
Thanks appreciate.
Old 06-22-2022, 03:29 PM
  #2  
TECH Fanatic
iTrader: (5)
 
spanks13's Avatar
 
Join Date: Oct 2008
Posts: 1,251
Received 479 Likes on 309 Posts

Default

Cam is very small for a 408. You'll make about 500hp flyhweel, ~430 whp. I've done it before exactly as you've built.

Are you looking for an extremely mild engine?

https://cammotion.com/camshafts/stea...ectangle-port/

This would run much, much better and still be very mild.
Old 06-22-2022, 04:14 PM
  #3  
TECH Fanatic
iTrader: (3)
 
Ls7colorado's Avatar
 
Join Date: Jul 2005
Location: Henderson, TN
Posts: 1,852
Received 447 Likes on 342 Posts

Default

Bigger cam and you could easily be making 600 at the crank.
Old 06-22-2022, 04:41 PM
  #4  
Teching In
Thread Starter
 
Rassie's Avatar
 
Join Date: Jun 2022
Location: South Africa
Posts: 7
Received 5 Likes on 4 Posts
Default Rassie

Originally Posted by spanks13
Cam is very small for a 408. You'll make about 500hp flyhweel, ~430 whp. I've done it before exactly as you've built.

Are you looking for an extremely mild engine?

https://cammotion.com/camshafts/stea...ectangle-port/

This would run much, much better and still be very mild.
Thanks appreciate your feedback. I will looking in to replacing my cam shaft. 600hp is good for me😁👍
Old 06-25-2022, 05:47 PM
  #5  
TECH Fanatic
 
Bspeck82's Avatar
 
Join Date: Jan 2017
Posts: 1,735
Received 417 Likes on 302 Posts
Default

probably 450 wheel. I would look into something bigger for sure.
Old 06-25-2022, 06:08 PM
  #6  
Teching In
Thread Starter
 
Rassie's Avatar
 
Join Date: Jun 2022
Location: South Africa
Posts: 7
Received 5 Likes on 4 Posts
Default

Originally Posted by Bspeck82
probably 450 wheel. I would look into something bigger for sure.
Thanks for your info. I appreciate.😊👍
Old 06-25-2022, 09:00 PM
  #7  
On The Tree
iTrader: (6)
 
84ta406's Avatar
 
Join Date: Feb 2009
Location: Worcester, MA
Posts: 178
Received 103 Likes on 64 Posts

Default

Cam is holding you back and then once you change that the intake will be holding you back quite a bit.
The following users liked this post:
Rassie (06-26-2022)
Old 06-26-2022, 04:44 AM
  #8  
Teching In
Thread Starter
 
Rassie's Avatar
 
Join Date: Jun 2022
Location: South Africa
Posts: 7
Received 5 Likes on 4 Posts
Default

Thanks for all your info and advice. I appreciate a lot😊👍👌



Quick Reply: LS 408 stroker build HP?



All times are GMT -5. The time now is 01:31 PM.