395ci piston 6 in rod on a 3.480 crank ?

[oldnelly87]

i was wondering if anybody knew if i can use a 395ci piston 6in rod on a 3.480 crank i got them setting next to my 350 6 in rod pistons and it doesnt look like their is much of a diffrance? the pins look like their in the same spot

[oldnelly87]

Compression height on the 3.48 pistons should be 1.260 and the 395 pistons should be 1.062. Meaning their should be around .200 difference in the two pistons. If you put the 395 pistons on a 3.48 stroke with a 6" rod....the top of the piston would be around .200 from the deck depending on deck height. If you used a 6.200 rod you would be almost perfect.

Another way to tell what I am talking about is to slide a wrist pin half way out of one of the 3.48 pistons and put the a 395 piston on the other half and compare the difference in height of the two.

so if i use a 6.200 rod it makes it about 2 thousands off and i can make that up in decking right ? how would i know the compression of the piston is it still the same as what the sheet says on it ?

[stockcar5]

only way to know for sure is to measure them.

[oldnelly87]

Two thousandth is .002. Two hundreds is .200. You would have mill off about a 1/4 inch to get .200.

alright i stuck a 6.200 rod on it and put it on the crank in the block its really close to 0 deck im gonna take it to the machine shop and have them make up the diffrance. thank you for the help

[sj valley dave]

Parrot69777, hate to correct your math, you are right in that two thousandths is .002, but two hundredths is .02, NOT .200...two tenths is .200, huge difference

[ToddSmith16]

..tenths, hundreds and thousands...LMAO!

[powerslide]

Google is a good thing

http://www.enchantedlearning.com/math/decimals/placevalue/

"It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt."

[perfconn]

Now you see how the internet police work.Trying to correct other peoples post,finding out what you do for a living,even whether you pay taxes.

[powerball]

So your not a machinist for a living? Paying taxex or doing business as jd's performance?

i can see why people hate you! you freaking prick!