need help with my 408w

[trav_19]

ok im getting ready to have my block preped and i have been receiving 2 sides to the story do i need to have it punched 30 over for the 408w kit? or does the kit make it a 408 with a stock bore? anyone know this? maybe depends on the kit?

 

[Jrgunn5150]

It would depend on the kit. Alot of kit's automatically assume you go +.030, and alot of kit's call it by the common name, even though it's not actual displacement. The manufacturer should be able to tell you, and it should be available stock bore or +.030

 

[trav_19]

ok looks like i really need to decide what kit im going with then lol

 

[94Pro-5.0]

i dont have any personal expirience, but have heard CHP is the way to go. they have kits up to 427

 

[ga94gt]

a 408 with a 88 mm turbo would be friken sick, or you could do a F1A or D1 Procharger just a thught!

 

[TRUUBLE]

Check with Scat for your rotating assembly. Decent prices, high quality, and top notch service. I'm running a Scat rotating assembly in the race car.

 

[trav_19]

thanks tad i will check them out ...the kit i did like was a chp kit ...and a turbo car would be killer but it will be a carb'd engine and i think i am just going to continue using nitrous on it

 

[Mr. OAM]

Yes, that is with a .030" overbore. It's a good idea to bore a block .030" when you rebuild it for the first time, particularly if its got a lot of miles on it, just to make sure the bores are perfectly round and square to the crank.

Basically all you have to do is calculate volume of a cylinder, which if you remember from high school/middle school is Pi x r^2 x length...

Radius of a 4.030" cylinder is 2.015". The radius squared is 4.06 . This figure times Pi (4.06 x 3.1417) is 12.755 . This is the area of a circle, in this case cylinder diameter in square inches. Now multiply this time the stroke (12.755 x 4") and you get a volume of 51.02 cubic inches per cylinder. Multiply that by your 8 cylinders and that makes 408.16 cubic inches.

And you thought you would never use that stuff!


Steve


Steve

 

[trav_19]

Yes, that is with a .030" overbore. It's a good idea to bore a block .030" when you rebuild it for the first time, particularly if its got a lot of miles on it, just to make sure the bores are perfectly round and square to the crank.

Basically all you have to do is calculate volume of a cylinder, which if you remember from high school/middle school is Pi x r^2 x length...

Radius of a 4.030" cylinder is 2.015". The radius squared is 4.06 . This figure times Pi (4.06 x 3.1417) is 12.755 . This is the area of a circle, in this case cylinder diameter in square inches. Now multiply this time the stroke (12.755 x 4") and you get a volume of 51.02 cubic inches per cylinder. Multiply that by your 8 cylinders and that makes 408.16 cubic inches.

And you thought you would never use that stuff!


Steve


Steve

wow thanks for the auctually math part of that lol i have never really known how to do the math lol now that i know i can put it to good use thank you

 

[Mr. OAM]

You're welcome.


Mrs. Tiechman's 6th grade science class is where I learned that. It was 1976. Eeessshh.



Steve

 

[Jrgunn5150]

Lol, i learned in Mrs. Vanlue's 6th grade class, in 1992 lol.

Just FYI Trav, some companies will call a standard bore kit a 408 kit just the same, it's kind of marketing, since everyone is familiar with the 408 displacement (like a Chevy 383), so make sure to ask.

 

[Kornnut]

OT: Are you keeping it fuel injected or going with a carb?

Mr Oam cool ass reply.

 

[AaRoN]

OT: Are you keeping it fuel injected or going with a carb?

Mr Oam cool ass reply.

I believe he's going with a carb'd setup.

 

[trav_19]

OT: Are you keeping it fuel injected or going with a carb?

Mr Oam cool ass reply.

I believe he's going with a carb'd setup.

yep carb'd set up... i will see if i can stick with it this time....lol i have motivation now i need to get this thing done before something happens again and i am unable to again lol