Rpms
Jan 7, 2007 | 12:04 PM
Thread Starter
Melting Slicks
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Rpms
I have two tachs, both redline at different RPM. What is the redline for SB and BB cars?
Jan 7, 2007 | 12:50 PM
Drifting
Joined: Sep 2006
Posts: 1,259
Likes: 2
From: MS
72 tach redlines
L48.....5300
LT1.....5600 with A/C
LT1.....6500 without A/C
LS5.....5600
Jan 7, 2007 | 01:05 PM
Melting Slicks
Joined: Mar 2006
Posts: 2,465
Likes: 0
From: Orange Park Fl
Depends on how the engine is built. God bless, Sensei
Jan 7, 2007 | 02:34 PM
Thread Starter
Melting Slicks
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
Thanks
Quote:
Originally Posted by
wfo76
72 tach redlines
L48.....5300
LT1.....5600 with A/C
LT1.....6500 without A/C
LS5.....5600
I have one where the yellow line starts at 5k and the orange at 5.5k and the other has the yellow start at 5.5 and the orange start at 6k. Its a 73 tach so it must be BB?
Jan 7, 2007 | 03:02 PM
Drifting
Joined: Sep 2006
Posts: 1,259
Likes: 2
From: MS
I'm having trouble understanding 5.5K and such, can you just state the
numbers in 5000, 5300, etc.
The tach with the yellow line starting at 5000 rpm should have the redline (orange section) begin at 5300 rpm.
The tach with the redline (orange section) starting at 6000 rpm should have the yellow section beginning at about 5700 rpm.
Is this what you have?
And also is your car a 72 454?
Jan 7, 2007 | 03:18 PM
Thread Starter
Melting Slicks
Joined: Aug 2006
Posts: 3,429
Likes: 20
From: Kingston Ontario
k=1000
Quote:
Originally Posted by
wfo76
I'm having trouble understanding 5.5K and such, can you just state the
numbers in 5000, 5300, etc.
The tach with the yellow line starting at 5000 rpm should have the redline (orange section) begin at 5300 rpm.
The tach with the redline (orange section) starting at 6000 rpm should have the yellow section beginning at about 5700 rpm.
Is this what you have?
And also is your car a 72 454?
5.5 k is 5500. The second must be a BBtach because it's out of a 73. I'n converting mt SB 72 into BB, I just want to put the right tach in there.
Jan 7, 2007 | 04:00 PM
Drifting
Joined: Sep 2006
Posts: 1,259
Likes: 2
From: MS
Ok, the 5.5K orange line tach is the one you should use, the 73 6K tach is from an L82 without A/C.