rev limiter ?'s
03-14-2011, 09:42 AM
#1
TECH Addict
Thread Starter
iTrader: (5)
Join Date: Aug 2009
Location: Mid MI
Posts: 2,351
Likes: 0
Received 0 Likes
on
0 Posts
rev limiter ?'s hey all , doing a cam swap and wondering what i should have my rev limiter set at. M6, stock shortblock, Crane 234/242 (same specs as GM847) 918 springs, magnum 1.6rr's, will have hardened pushrods, LS7 lifters. the cam recommends spinning 6400+, so what is a safe rev limit for my engine??
03-14-2011, 09:53 AM
#2
Launching!
iTrader: (12)
Join Date: Sep 2009
Location: burton mi
Posts: 212
Likes: 0
Received 0 Likes
on
0 Posts
with it being the stock short block, i wouldn't take it over 6400. so maybe set the limiter at 6500. but that still might be a little high. personally i wouldn't go over 6300.
then i build a stroker or something
03-14-2011, 11:26 AM
#6
TECH Fanatic
iTrader: (8)
Join Date: Jan 2011
Location: Pinellas Park Florida
Posts: 1,550
Likes: 0
Received 0 Likes
on
0 Posts
im sure you will spin a bearing before breaking a rod bolt, but either way a 2 bolt lt1 should not be reved part 6400 unless yu want to pull the motor.
03-14-2011, 11:56 AM
#7
5800 ...
As mentioned above, 6400 is generally accepted as a good balance between risk and benefit.
I kept my H/C 350's shift points just below 6400 and a limiter at 6800 without issue,
when I tore the motor down to build a 383 everything seemed to be in good shape.
If you're going to run that cam, you might consider saving up for a bottom end that can handle a little more RPM.
Maybe a nice 355 rebuild for next winter?
As mentioned above, 6400 is generally accepted as a good balance between risk and benefit.
I kept my H/C 350's shift points just below 6400 and a limiter at 6800 without issue,
when I tore the motor down to build a 383 everything seemed to be in good shape.
If you're going to run that cam, you might consider saving up for a bottom end that can handle a little more RPM.
Maybe a nice 355 rebuild for next winter?
Trending Topics
03-14-2011, 12:04 PM
#8
All this 6400 RPM stuff is nonsense. Can someone post an actual failure that was directly related to high rpms?
Rev it where it wants to be revved. No sense installing a cam like that and neutering it by not being willing to shift it high enough.
Get it on the track and play with the shifts points until you stop gaining trap speed.
Rev it where it wants to be revved. No sense installing a cam like that and neutering it by not being willing to shift it high enough.
Get it on the track and play with the shifts points until you stop gaining trap speed.
03-14-2011, 01:05 PM
#9
TECH Addict
Thread Starter
iTrader: (5)
Join Date: Aug 2009
Location: Mid MI
Posts: 2,351
Likes: 0
Received 0 Likes
on
0 Posts
if i redo the bottom end its gonna be matched with some AI or LE heads and cam, was just trying to see what i could do with the setup i have now. ill for sure be pushing it alot harder at the end of the season this year.
03-14-2011, 01:44 PM
#10
TECH Fanatic
iTrader: (8)
Join Date: Jan 2011
Location: Pinellas Park Florida
Posts: 1,550
Likes: 0
Received 0 Likes
on
0 Posts
All this 6400 RPM stuff is nonsense. Can someone post an actual failure that was directly related to high rpms?
Rev it where it wants to be revved. No sense installing a cam like that and neutering it by not being willing to shift it high enough.
Get it on the track and play with the shifts points until you stop gaining trap speed.
Rev it where it wants to be revved. No sense installing a cam like that and neutering it by not being willing to shift it high enough.
Get it on the track and play with the shifts points until you stop gaining trap speed.
03-14-2011, 02:27 PM
#14
TECH Regular
iTrader: (6)
Join Date: Dec 2009
Location: Elmwood Park
Posts: 419
Likes: 0
Received 0 Likes
on
0 Posts
I have basically the same setup and i have seen 6800 on the tach all the time. Only difference is my shortblock was rebuild by me with stock bolts. So youll prob be fine
03-14-2011, 04:04 PM
#15
TECH Addict
Thread Starter
iTrader: (5)
Join Date: Aug 2009
Location: Mid MI
Posts: 2,351
Likes: 0
Received 0 Likes
on
0 Posts
stock heads Ported ,polished and Milled, with 5 angle valve job. intake ported and polished, TB ported and polished. other mods in sig. all head work and stuff done by Automotive Engine Specialties in chicago
03-14-2011, 06:55 PM
#16
TECH Fanatic
03-14-2011, 08:01 PM
#18
TECH Addict
Thread Starter
iTrader: (5)
Join Date: Aug 2009
Location: Mid MI
Posts: 2,351
Likes: 0
Received 0 Likes
on
0 Posts
and again guys im not trying to break any HP or ET records or anything just trying to see what RPM i will be pushing my luck and where i should be at when i shift..
03-14-2011, 11:35 PM
#19
TECH Fanatic
03-15-2011, 09:45 AM
#20
TECH Fanatic
iTrader: (8)
Join Date: Jan 2011
Location: Pinellas Park Florida
Posts: 1,550
Likes: 0
Received 0 Likes
on
0 Posts
With a stock cam? i would like to see the sheet with something showing the cam specs, the stock cam stops making power at 5600rpm so i would love to see one that still making power at 6000-6200