Doubt on the assembly of my 402 Stroker!!!

[Giovani Caju]

Good Afternoon Friends!

My name is Giovani Caju, I am Brazilian I am a 1972 Dart that is a copy of his 1968 Dart. I'm putting together a 402 stroker like that of our colleague BEER http://www.dodgecharger.com/forum/index.php?topic=283.0

This week I made the pre assembly and noticed that the pistons are too low in relation to the deck, so it does not generate the compression I need.

I logged on the KB and the number would be disappointing 8.13:1
So my question would be for the BEER: What is the rate achieved in your engine?

And for the other colleagues:
Use Scat crankshaft 4 ', Scat I Beam connecting rods, pistons KB 356, Edelbrock Performer RPM heads, anyone have this setup or something?

A big hug to everyone and sorry for my spelling!

[elacruze]

Hi Giovani!

What octane gasoline is available in Brazil?

[Giovani Caju]

Our oussue 87 octane gasoline, as gasoline has 95 octane podium.
I would ultilizar gasoline, because there was any podium position.
So I would have a compression ratio around 10.5:1

Big hug ...

[elacruze]

95 is higher than available here in the U.S. 93 is commonly the highest. That is important to know before recommending compression.
10.5 is easy with 95 octane, and you could carefully run 87 if you must to find 95.

[Giovani Caju]

I am almost decided to download the 0.100 block at 0.40 and more on Eddy's and leave the flat piston.
So I believe that would raise the compression ratio!

I wonder how he got the BEER rate of the engine, and if he lowered the block?

Hug

[femtnmax]

This week I made the pre assembly and noticed that the pistons are too low in relation to the deck, so it does not generate the compression I need.

Beer used a different piston than the KB 356 piston you have.  It is common to "deck" the block, but from what I found for your pistons, they are either a step dome or step dish type piston.  If you have step dome type piston the height of the dome needs to be included in how much to deck the block.  So we need answers to your piston type before we can give you the best answer.
Here is a useful compression ratio calculator that will help your engine build achieve the correct compression:
http://www.kb-silvolite.com/calc.php?action=comp
Let us know what you find out.

[Giovani Caju]

Good morning to all "Friends"North Americans!

I would like to thank Femtnmax and Elacruse for helping!
Actually I made a small mistake, I took into consideration when measuring the deck, the lower part of my piston (0.0980).
After much "headache" I realized that the action to be taken into account was just below the dome (0020)
Solved the problem!


These links are from my blog, where can you encounter any pictures of Brasilian Chargers R / T.

http://dart72.blogspot.com/2010/05/charger-rt.html
http://dart72.blogspot.com/2010/07/tabela-de-cores-da-linha-dodge.html
http://dart72.blogspot.com/2010/08/sabado-bandido-ou-seria-solidario.html
http://dart72.blogspot.com/2010/10/6-encontro-de-carros-v8-de-garibaldi_17.html

Big hug to everyone and a great Sunday!!