1.85 Rockers, Do they increase the power range
#1
1.85 Rockers, Do they increase the power range
If I install the 1.85 Rocker arms on a stock C-5 LS1 cam, will the power band increase past the 5500rpm or will the engine stop making additional HP as it does know. Thanks
#4
Moderator
iTrader: (11)
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,604
Likes: 0
Received 6 Likes
on
6 Posts
Lift goes up but duration does not (by much). Flow
is the "area" (lift*duration*mysterious lobe & flow
dynamics). A performance cam increases both lift
and duration over the stocker. If your heads show
no flow increase after 0.550" lift then increasing
lift by whatever means is no help and only duration
will improve things from there. Right?
is the "area" (lift*duration*mysterious lobe & flow
dynamics). A performance cam increases both lift
and duration over the stocker. If your heads show
no flow increase after 0.550" lift then increasing
lift by whatever means is no help and only duration
will improve things from there. Right?
#6
10 Second Club
iTrader: (4)
Join Date: Feb 2004
Location: Marysville, WA
Posts: 9,448
Likes: 0
Received 0 Likes
on
0 Posts
I gained 15hp from 4500rpm up with 1.8 rockers & the stock cam. And I now continue increase hp from 6k to 6300 (well, 6500 now with the Hot Cam) where before it went flat at 5500. But you'll need better springs to make it all work at the increased rpms.
#7
I changed the heads with ported ones that flow 285 @ 5.50, the heads also have 918 springs so I should be set. Im guessing with the 1.85 Rockers I should make power up to 6000 rpms. Thanks