A Sherlock Holmes needed to ID 340 springs - Aftermarket
I want to put a new cam in a 340. The problem is the spring were replaced before I bought it. I would like to know what application this spring was used for for obvious reasons: They may be usable for this or another build. Ideally it would be nice to know who manufactured it, but short of that, it would be helpful for an experience engine builder to weigh in and say under what circumstances this (a longer, thinner gauge) spring would be used. Here are some clues:
The spring was installed pre-1991.
It is approximately 1.44" in diameter, 2.34" free length and wire is approximately .18"
The valves measure stock in length.
Installed height is the same as on my stock head with stock springs: 1.7
The picture shows the unknown spring on the left and a stock 340 spring on the right, for comparison.
Thanks.
I want to put a new cam in a 340. The problem is the spring were replaced before I bought it. I would like to know what application this spring was used for for obvious reasons: They may be usable for this or another build. Ideally it would be nice to know who manufactured it, but short of that, it would be helpful for an experience engine builder to weigh in and say under what circumstances this (a longer, thinner gauge) spring would be used. Here are some clues:
The spring was installed pre-1991.
It is approximately 1.44" in diameter, 2.34" free length and wire is approximately .18"
The valves measure stock in length.
Installed height is the same as on my stock head with stock springs: 1.7
The picture shows the unknown spring on the left and a stock 340 spring on the right, for comparison.
Thanks.