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Yesterday I shared that I bit the bullet and dropped the 351c block off at the machine shop to get a complete going through and check out.

Today I escalation my commitment. I dropped the Heads off for a new valve install estimate. I also asked them figure out what my total compression will be. There has been some debate about whether or not I have 10.5:1. Some venues belive based on looking at my pistons I have 12:1 (which would be wierd since my HP was low) and others have said it looks lower....so I will have a true number. I also asked them to figure out how much total clearance I have to the piston so we can figure out how much lift I can run without andy interferance problems should I ever overrev accidentally. I imagine that I just took my under $500 machine shop bill and bumped it over $1000 for sure, but, 1. Getting rid of the stock 4 groove valves is a good idea. 2. Knowing the true compression is pretty important and 3. IF I do cam change it would be nice to know exactly what specs I can run wihout any problems.

I still can't afford it though, and have dipped into the Vacation fund for October when we are going to the big easy 'shhhhh' hopefully I will be able to replenish it before anyone notices ;)
 

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have dipped into the Vacation fund for October when we are going to the big easy 'shhhhh' hopefully I will be able to replenish it before anyone notices
you're a baddddddd man!
 

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Good deal. Might want to ask the shop what some mild headwork might cost to go along with the new cam. Perhaps they'll give you a break with the other work being done. You can try this method of SWMBO justification: 'Honey, it's much more cost effective to get it all done (correctly) at one time, and the more money I save on the total project is more money I can spend on you'.

Also, remember, it's easier to beg forgiveness than to ask permission...
 

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Way to go. Keep going...
 

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Nick, I think I found that company I was talking about. It's "Motor Machine & Supply co." , 1401 West Glen, Tuscon 85705, pn# 1-520-792-1156.

Tell them your specs, and they'll pick the right grind for you. Cost is $40.00.

I'll tell you from what little checking compression ratios I did on a 289 that I have. It's real easy to be a full point off or more either way just by assuming! I love it when people say that just because you have flat top pistons with 55 cc heads on a 289, you have 10:1 compression. Some of these flat top pistons have valve reliefs that volumes displace as much as C code pistons! Deck height, pin height, head gasket crush volume add a lot of variables. Bottom line, there's only one way to know how much compression you have...measure!

Good luck and hope the missus doesn't read the forum! :eek:
 

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Incorporated Sell Out
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Discussion Starter #7
Naw, I already talked to the Mrs about it. She knows I wouldn't pull that money unless I knew I would be able to replace prior to vacation. So there is no real issue there. :)

Thanks for the info for the cam choice too :)
 

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Nick, you are doing the safe thing by changing out the valves... good luck with the rest of it. You ought to pick up plenty of power with all 8 cylinders pumping!

Doug
 

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Yeah, but it's on a 300bps dialup connection. ;)

Acoustically coupled, no less.
I knew I was saving those things for something..

Just Call me Hells IT department ::
 

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Well I for one have no intention of joining you all!
I can watch you from the balcony above ! ::
 

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We all float down here.. You Can Float Too.. ;)
 
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