dartfreak75
Restore it, Dont part it!
Ok i will end the thread!
Yes my two Model year-1990(pre Magnum) truck engines with original flat top no valve relief pistons are .045" in the hole.The .075 in the hole would be the higher car pistons. The .045" in the hole is not making sense to me... any way those are maybe early 90's Magnum truck engines? Re-check the 'in-the-hole' measurement very carefully, and if it truly .045" then that a notable improvement; that gives you nearly 0.5 point in CR. (And we're assuming either flat tops or flat tops with 4 small eyebrows.)
(FWIW, the truck pistons that are very low CR were around .100-.110" in the hole.)
You asked about seeing the lifters rotating; there are 2 ways:
- Mark the pushrods with a mark along the upper side with a light colored grease pencil or welders pencil. (Makes it easy to see the rotation). Turn the engine over by hand with it all assembled and look to see that the marks move around for each pushrod.
- If you have some old valve covers, take a pair, cut out large rectangular holes to take the tops off, put in some gaskets, and and then you can watch the pushrods 'live'. This way is more fun but by the time you get around to looking closely at them all at startup, the damage may be done.
As for cranking, I have done as much as 15-20 seconds with a cam with moderately heavy valve springs, and not had any issues. I could not tell you how long is too much, just that less is safer, but if you have stock valve springs, then it is going to be less critical IMHO. BTW I always use a moly based cam lube, which many folks think gives better protection, not the runny kind.
What would you recommend in its place?good to know
sell that summit cam, any edelbrock cam, erson cam etc
come in from the cold
It's a good thing I didn't spend my extra budget money on pistons and rings yet cause now i have to buy torsion bars! Projects are funny that way!
Just the one it was stuck in the lca I tried everything! It gave a heck of a fight but i won! LolDid you use a grinder to remove them?
I'm not installing a sway bar I'm just gonna put back in the Oringals size luckily a member on here give me a good deal on a set. I'm very thankful cause that was not in the budget but i learned from working on old guns when working on anything old things seldom go as planned!If your driving on corners think 1" plus 1.1" etc
do NOT install a rear sway without larger bars
ON the cam get the heads and cr nailed down
Measure twice- cut once
keep up the questions
Yesterday is my today and today is my tomorrow...or some crap like that I work night shift I have no idea where I am. LolIt is early today.... a lot an go wrong!!!!
Well the 318 In thread needed to be machine so instead of spending the money to machine the 318 I decided to spend the money to machine the 360 I have instead. It still isnt finished yet . I have collected all the parts just haven't finished the machine work.I read through ten pages of this novel and it's like somebody before me tore out the last page! Not that I'm looking to expand it to twenty pages but how about a brief update/wrap up of the progress made in the past year?