Sponsored Content
Sign Up To Join Us Now!
D
I have a 69 350/350 with 11:1 compression ratio. What should the PSI on a compression test read?
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
SPONSOR AD:: (Our Sponsors help support Vette Registry)
Lifetime Member
Send PMHot Springs, AR - USA
Joined: 4/24/2004
Posts: 3248
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
150 PSI with no more than 20PSI variance
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Ideally, not more than 10% variation between cylinders. If you are up to 20%, the car will run okay, but not quite right. You may not notice.
On the "Tail of the Dragon"
(some day, no strike that, October 2008 it turned red, still in progress!)
(click either image to see a bigger version)
(some day, no strike that, October 2008 it turned red, still in progress!)
(click either image to see a bigger version)
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Lifetime Member
Send PMHot Springs, AR - USA
Joined: 4/24/2004
Posts: 3248
Vette(s): 69 Conv #'s match 427, TKO-600/.64, 3.36HD-Posi, HT, T/T, PS, PB, PW, SP, Leather, Comp XE264HR & Roller Rockers & Lifters, Air-Gap RPM intake, Holley St Av 770 VS, MSD 6AL+Dist+Blaster SS, K&N, Jet-Hot Hooker Side-Pipes, Steeroids, Al Rad, Spal Fans
| kstyer said: Ideally, not more than 10% variation between cylinders. If you are up to 20%, the car will run okay, but not quite right. You may not notice. |
which is pretty consistent with the maximum 20 PSI allowable variance which equals 13%
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
in Forum: C3 Engines, Driveline and Handling
Sponsored Content