Re: help with 440 piston to deck mesurment
[Re: ek3]
#1565666
01/19/14 10:46 PM
01/19/14 10:46 PM
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Joined: Apr 2011
Posts: 315 Ontario, Canada
RealWing
enthusiast
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enthusiast
Joined: Apr 2011
Posts: 315
Ontario, Canada
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Also must check your intake manifold for alignment with the heads after machining an unknown amount off the block.
1970 Superbird 440-6bbl, auto 1969 Barracuda 340-4bbl, FB Formula S auto 1969 Barracuda 6.1 L Hemi, 5 speed, Convertible 2022 Can Am Spyder RTL
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Re: help with 440 piston to deck mesurment
[Re: safaritow]
#1565669
01/19/14 11:38 PM
01/19/14 11:38 PM
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Joined: Mar 2008
Posts: 5,746 Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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Well you will have no valve clearance issues. will run fine in my opinion. With a steel shin .020 to .022 gasket you will have about 9.3 to 1 or a tad less and poor quench. If you were to use a composition .039 gasket about 8.9 to 1 and worse quench. you will be fine but things could be a way better with a 0 deck or closer to 0 deck piston. would be nice to know what was taken off before I would have the deck height measured and go from there. The machine shop can measure it if they are any good at all.
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Re: help with 440 piston to deck mesurment
[Re: safaritow]
#1565673
01/20/14 12:11 AM
01/20/14 12:11 AM
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Joined: Jun 2012
Posts: 1,899 MYRTLE BEACH SOUTH CAROLINA
ek3
top fuel
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top fuel
Joined: Jun 2012
Posts: 1,899
MYRTLE BEACH SOUTH CAROLINA
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Quote:
Could I cut the heads down? Would that help?
cutting the head will bring the comp. ratio up however, it does nothing to fix the .070+ in the hole deck height. the correct piston will be needed to do it properly.
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Re: help with 440 piston to deck mesurment
[Re: safaritow]
#1565676
01/20/14 01:31 AM
01/20/14 01:31 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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First I'd plug the specs into Kieth Blacks calculator to see what SCR you have. Maybe .022" for the steel shim gaskets and a guesstimate on the head CC's (what heads?). since you are torn down it'd be a good move to go with some higher CR pistons as mentioned if that is in the budget but that MAY require rehoning to get the wall clearance/finish correct (I'm assuming from what I read that it was built then not run?) and you MAY need to rebalance with new pistons. Be SURE & get the correct cam in there to build some Compression. Steel shim gaskets with alum paint will work most of the time IF the heads/decks are flat & you said your decks are. You'd wanna set the heads & gaskets on & LIGHTLY snugged with several bolts then see what the intake alignment is & mill the heads' intake surfaces as needed.
live every 24 hour block of time like it's your last day on earth
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