Compression Test Results
Thread Starter
Intermediate
Joined: Nov 2006
Posts: 44
Likes: 0
From: Redding California
Compression Test Results
71 350ci motor
I was given a 350ci motor that had been sitting for a year. It was told it had 375hp. I changed the oil and completed a compression test.
1 3 5 7
140 150 135 150
2 4 6 8
160 155 130 130
The motor is sitting in the frame with the transmission attached.
Any advice on what to do next or are the numbers ok. Thanks.
I was given a 350ci motor that had been sitting for a year. It was told it had 375hp. I changed the oil and completed a compression test.
1 3 5 7
140 150 135 150
2 4 6 8
160 155 130 130
The motor is sitting in the frame with the transmission attached.
Any advice on what to do next or are the numbers ok. Thanks.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
That engine DOES NOT have 375hp. It is a low compression engine with some worn piston rings. You probably will need to rebuild it if you want to make anything out of it. My guess is that it is a stock SB 350 with 8.5:1 compression--rated at 270hp in '71 and rated at 220hp in '72.
Racer
Joined: Apr 2008
Posts: 418
Likes: 0
From: destin fl
71 350ci motor
I was given a 350ci motor that had been sitting for a year. It was told it had 375hp. I changed the oil and completed a compression test.
1 3 5 7
140 150 135 150
2 4 6 8
160 155 130 130
The motor is sitting in the frame with the transmission attached.
Any advice on what to do next or are the numbers ok. Thanks.
I was given a 350ci motor that had been sitting for a year. It was told it had 375hp. I changed the oil and completed a compression test.
1 3 5 7
140 150 135 150
2 4 6 8
160 155 130 130
The motor is sitting in the frame with the transmission attached.
Any advice on what to do next or are the numbers ok. Thanks.
Race Director
Joined: Oct 2000
Posts: 15,105
Likes: 79
From: central FL, near the beach.
i don't see the point of a leak down test.
if u r in need of a free motor, put it in and drive it.
if u want to rebuld it now rather than later, that makes sense too.
in '75 i put a $50 motor in my 61 and drove it 10,000 miles. never did any tests, why bother,
i just wanted to drive my 61
if u r in need of a free motor, put it in and drive it.
if u want to rebuld it now rather than later, that makes sense too.
in '75 i put a $50 motor in my 61 and drove it 10,000 miles. never did any tests, why bother,
i just wanted to drive my 61
