Picking out a cam...risers worth it?
10-31-2013, 12:12 PM
#11
Registered
10-31-2013, 06:58 PM
#14
Registered
What stock SBC merc sterndrive was rated over 350hp. The old 377 blue scorpion had CMI headers, the 6.2 is 320hp and the 5.7 mag is 300hp. I will say that when my old Searay had the original 5.7 in it with a 260H comp cam, Edelbrock perf, and roller rockers, I picked up 2 mph when I installed the Kodiaks (EMI) with the stainless risers. So that did make a difference, but unless you are going to be pushing over 450hp at the motor, headers are not worth it, but premium manifolds are. If you are going under 400hp the GLMs are more than adequate for the job.
Here is my Kodiak vs dyno header test.
Uploaded with ImageShack.us
Here is my Kodiak vs dyno header test.
Uploaded with ImageShack.us
was referring to mer bbc
10-31-2013, 07:51 PM
#15
Registered
10-31-2013, 08:51 PM
#18
Lucked out and found out I actually have GLM manifolds! Pretty great surprise. Ditching the captain's call. So we decided to pick up the risers and we had Bob grind us a couple cams. Hopefully I'll have some good dyno information to post here soon!
10-31-2013, 11:19 PM
#19
Registered
iTrader: (2)
Join Date: Aug 2005
Location: Between A Womans Leggs in IL
Posts: 6,306
Likes: 0
Received 1 Like
on
1 Post
I have not either or have i seen any ones with cmi exhaust besides Mr x's 28 scorp he had but then again i think he installed them when he worked at donzi..
the bobtails are usually the black scorpion engines..the one with the flame cover instead of the blue cover..
the bobtails are usually the black scorpion engines..the one with the flame cover instead of the blue cover..
