recommended compression distance

[1Quick88]

Not to familiar with these things so here goes..


I've been looking for a set up pistons for my engine and having a hard time trying to figure out what compression distance i need to get to approximately a 11:1 compression ratio.

My 400 is bored .060 over and I have 76cc heads. Right now im looking at a set of forged pistons from Keith Black. they have 2 different styles Dome and Flat top.

The dome pistons have a Compression distance of 1.433 and the flat tops have one of 1.133.

Then it starts talking about piston head volume and some other things and now im completely confused....:crazy::lol: I'm just looking to get around 11:1 compression. Basically i want to go as high as possible but still be safe and able to run 93 with out any troubles.

here's the link:
http://store.summitracing.com/egnsearch.asp?N=700+400386+318016+115+4294781727&autoview=sku


anyways hopefully someone here will be able to help me out a bit :cool:

[BigWheelinBubba]

Try this (http://www.rbracing-rsr.com/compstaticcalc.html)

[1Quick88]

Thanks for that link..that was exactly what i was lookin for :cool:

Found a few sets that look they will work good and leave me with about 10.9 - 11.1 compression :bna:

[357windsor]

Thanks for that link..that was exactly what i was lookin for :cool:

Found a few sets that look they will work good and leave me with about 10.9 - 11.1 compression :bna:

So how close is it to being done?

[1Quick88]

So how close is it to being done?
Still pretty far out. I have a decent running 350 sitting in the car right now that im going to run with until i get my 400 back in action early-mid summer. so far the list includes:

-Set of forged pistions
-new cam
-Electric Fuel pump w/ new lines to motor and new fuel filter
- bigger trans cooler


those are the main things i can think of off the top of my head. then of coarse all the minor things that will nickel and dime me to death..:lol:

and if i can swing it by then it will have a nice heathy 125 shot of the happy gas :cool:.

should make for a pretty fun car..hoping for a 11 second pass by the end of the season..We'll see how it goes :bna:

[357windsor]

Still pretty far out. I have a decent running 350 sitting in the car right now that im going to run with until i get my 400 back in action early-mid summer. so far the list includes:

-Set of forged pistions
-new cam
-Electric Fuel pump w/ new lines to motor and new fuel filter
- bigger trans cooler


those are the main things i can think of off the top of my head. then of coarse all the minor things that will nickel and dime me to death..:lol:

and if i can swing it by then it will have a nice heathy 125 shot of the happy gas :cool:.

should make for a pretty fun car..hoping for a 11 second pass by the end of the season..We'll see how it goes :bna:

I've got new Holley Blues w/ regulator for $97 plus tax at work. Just got my longblock all set. Waiting on pushrods right now so I can finish the top half of the motor. Gotta modify the pick-up tube to work w/ the piece of sh$% windage tray. :lol:

[1Quick88]

I've got new Holley Blues w/ regulator for $97 plus tax at work. Just got my longblock all set. Waiting on pushrods right now so I can finish the top half of the motor. Gotta modify the pick-up tube to work w/ the piece of sh$% windage tray. :lol:


sounds like your gonna finish up awhile before i am...:(

hopefully this year when they are both alive were gonna have to run them..even though from the sounds of it yours is gonna hand me my cars ass on a silver platter :lol:

[357windsor]

sounds like your gonna finish up awhile before i am...:(

hopefully this year when they are both alive were gonna have to run them..even though from the sounds of it yours is gonna hand me my cars ass on a silver platter :lol:


I still have a lot more to do. Yours will look better no doubt. I wouldn't count on me beating you-you never know. Hopefully my pile of parts works well together. :lol:

[1Quick88]

I still have a lot more to do. Yours will look better no doubt. I wouldn't count on me beating you-you never know. Hopefully my pile of parts works well together. :lol:

We'll just have to wait and see :cool: I'm hoping to have the 400 back in the car around May or June

This winter the whole car is getting sanded down and im going to be putting 3-4 new coats of clear coat over the paint. There are some areas on my car that the clear is faded and started peeling..Car should look pretty damn good after that..now i just need to get rid of that orange :crazy::lol:

[357windsor]

We'll just have to wait and see :cool: I'm hoping to have the 400 back in the car around May or June

This winter the whole car is getting sanded down and im going to be putting 3-4 new coats of clear coat over the paint. There are some areas on my car that the clear is faded and started peeling..Car should look pretty damn good after that..now i just need to get rid of that orange :crazy::lol:

It'll look real good compared to the multiple colors mines gonna be. :D

[1Quick88]

It'll look real good compared to the multiple colors mines gonna be. :D

yeah but its those ugly car's that you have to look out for because you know what all their money went towards ;)

Either way it should be a fun race, If it ever happens :lol:

[357windsor]

yeah but its those ugly car's that you have to look out for because you know what all their money went towards ;)

Either way it should be a fun race, If it ever happens :lol:



Yeah hopefully we both get our cars together this year. Who's painting your car?

[1Quick88]

Yeah hopefully we both get our cars together this year. Who's painting your car?


You're talking to him :cool: I'm not going to be changing the color of the car yet though, this is just a quick fix to make the car look a bit better. Next winter i'll be going all out and painting the car..still unsure on the color though. i was thinking a "black cherry" or some 2 or 3 stage paint. Should look badass when im done with it :D

I've been doing body work since i was about 14 so i've gotten pretty good at it. I painted my 91 Camaro (the blue and silver stripe car) myself and i also painted my old 88 Firebird. here's a pic of how it turned out..shitty camera at the time..the picture doesnt do the paint justice by anymeans.

Before:

http://www.team3rdgen.com/albums/my-first-f-body-project/firebird2.jpg

After

http://www.team3rdgen.com/albums/my-first-f-body-project/black_passenger.jpg

End...unfortinatly..this happened a few weeks after :(

http://www.team3rdgen.com/albums/my-first-f-body-project/wrecked_interior.jpg

[357windsor]

:eek: You can paint my car. :D

[Casper302]

The more compression the faster :)



13.8.1 Compression in my little engine

[357windsor]

The more compression the faster :)



13.8.1 Compression in my little engine

More than what I have. Sounds like someone has a race motor.

[1Quick88]

The more compression the faster :)



13.8.1 Compression in my little engine

yeah but i'd like to be able to pull up to whatever gas station i feel like and only have to put premium in..i dont need a full out race car, just more expensive when they break and they seem to do that alot more often to lol ;)

[357windsor]

yeah but i'd like to be able to pull up to whatever gas station i feel like and only have to put premium in..i dont need a full out race car, just more expensive when they break and they seem to do that alot more often to lol ;)

Oh c'mon we know you're building a racecar.:D

[1Quick88]

Oh c'mon we know you're building a racecar.:D


haha riiiiggghttttt :lol:

[blk00rt]

does 10:1 compression 408 ci with 2 stages of NOS count as a race motor?
if so then I may have to go find one too for next year.