BritishV8 Forum

Never hurts to double check, but I have never had to change pushrod length when swapping in a bigger cam (provided that cam's base circle is the same).

I talked about that with a friend who wiped a cam on his 3.5.
This cam came from Woody and I think he said Woody does change the base circle..

Not that it matters, I don't think, but I'm going from a TR8 block to a brand new 4.0 short block.
Cam was in the 3.5 for about 7K and 4.0 heads for the same amount

My friend did am Excel spreadsheet with my measured lengths and you can see possible preload by changing "G"
Try this
https://1drv.ms/x/s!AhZAumuZ4Qhfcoq2Ft5NU_1DP4k

Dang, can't figure how to edit in the cloud version

Got it
Just go to the "Edit Workbook"
Hit the arrow and edit in Browser

So basically you can input any length in the "G" field

So using the chart I posted if I use 7.985" pushrod my preload will rang from a low of .023 to a high of .095
A little high on the low high end but id I go a little  it  drops the low below .020.

I plgged in the "stock" pushrod value and thought the preload values over 100 were a little to high


Need to soak my lifters before I finish up the top end.
I have always just used my engine oil.
Any reason I should use my break in oil to soak them?