Sorry if this has already been covered here, but I tried to search and couldn't find exactly what I wanted.
A member of my local club (doesn't speak english, hence why I'm posting here for him) wants to take the LR8 from his 86 and put it in an 84 he is currently restoring.
We already discussed that the wiring is different, especially the C500.
I was looking at the specs for both years and found the following differences:
1984 pushrods length = 242.316mm or 9.754"
1986 pushrods length = 213.35mm or 8.3996"
BUT! If I look at everything else in the engine specs everything is the same between 84 and 86 (springs, plunger travel, lobe lift, pistons, etc.).
1- How is it possible that for longer rods, the 84 has the same specs for everything else (wouldn't longer rods require other parts in the valvetrain to be shorter for same lift?)
2- Would swapping out only the bottom of the 86 and keeping the top from the 84 work? (this would save messing around with the wiring).
/ 88 GT84Indy #1863
[This message has been edited by benoitmalenfant (edited 08-04-2013).]