Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

MS3 and TSP 2.5 LS6 heads on a 408-418?

Thread Tools
 
Search this Thread
 
Old 11-20-2007, 05:15 PM
  #1  
On The Tree
Thread Starter
 
508Stroker's Avatar
 
Join Date: Nov 2007
Posts: 104
Likes: 0
Received 0 Likes on 0 Posts

Default MS3 and TSP 2.5 LS6 heads on a 408-418?

Will that top end flow enough for that size bottom end? I am looking for a top end I can build now, run with spray, then build the stroker later. Mind you this will be a vic Jr intake carb'd combo. Thanks a lot guys!
Old 11-25-2007, 04:07 AM
  #2  
Banned
 
Asmodeus's Avatar
 
Join Date: Apr 2006
Location: Naperville, IL
Posts: 1,875
Likes: 0
Received 1 Like on 1 Post
Default

The heads will flow decent for a 408. Not the best, but good budget heads. The MS3 in a 408 would be like a 228/232 in a 346.. so right about in the medium range.
Old 11-25-2007, 12:14 PM
  #3  
LS1Tech Premium Sponsor
iTrader: (3)
 
Trevor @ Texas Speed & Perf.'s Avatar
 
Join Date: Nov 2001
Location: Lubbock, Texas
Posts: 4,399
Likes: 0
Received 4 Likes on 4 Posts

Default

The heads & cam setup will work fine in a 408+ cid stroker, but you'll be leaving some power on the table. If you purchase stage 2.5 LS6 heads, you can always send them back to be upgraded to stage 3's when you install the stroker. Our stage 2.5 and stage 3 cylinder heads use the same CNC program. The only difference is valve size with the stage 2.5's using stainless 2.02"/1.57" vs. the stage 3's stainless 2.08"/1.60". The stage 3's will flow an additional 8-10 cfm more than the stage 2.5's on a 4" or greater bore size.

Our MS3 will make for a nice street/strip cam in a stroker. You can certainly make additional power with a larger camshaft, but our MS3 will make for some nice average HP and TQ with a relatively low peak RPM.

Feel free to e-mail me at trevor@texas-speed.com or PM me with any questions or concerns.

Thanks!

Trevor
Texas Speed & Performance
__________________
Old 11-25-2007, 12:31 PM
  #4  
12 Second Club
iTrader: (15)
 
baldurann's Avatar
 
Join Date: Sep 2004
Location: Kingwood, TX
Posts: 576
Likes: 0
Received 0 Likes on 0 Posts
Default

You should get someone to spec you a custom cam.. or go with one of TR's or TSP's stroker grinds. MS3 was made for a 346/347, so while it's not a terrible choice, you're leaving some on the table. A 408/418 has a lot of cubes... takes a lot of cam to make one rowdy.



Quick Reply: MS3 and TSP 2.5 LS6 heads on a 408-418?



All times are GMT -5. The time now is 08:23 AM.