|
Re: Top end for my 520" street bruiser
[Re: TonyS451]
#1632125
06/12/14 10:41 AM
06/12/14 10:41 AM
|
Joined: Jan 2003
Posts: 6,350
Aurora, Oh.
max_maniac
master
|
master
Joined: Jan 2003
Posts: 6,350
Aurora, Oh.
|
You will like those heads alot. I did the same thing ordering those same heads through Porter and letting him clean them up and then send them to me. On my old 64 I had that 493 running 9.80's and had to slow it down because of no cage  Now I have a set of the big EZ's because the 63 is about 400lbs heavier then the old car and it has gotten me into the 9.60's. Kees us updated on the progress and outome once it's up and running. Russ
|
|
|
Re: Top end for my 520" street bruiser
[Re: max_maniac]
#1632126
06/12/14 11:33 AM
06/12/14 11:33 AM
|
Joined: Jan 2003
Posts: 9,875
Weddington, N.C.
Streetwize
master
|
master
Joined: Jan 2003
Posts: 9,875
Weddington, N.C.
|
Looks great Tony!
Please be sure to go the extra mile onthat 440-2d manifold and port the transitions from the lower plenum to the runners.
Look up the old Dr. Air article. The upper plenum is great as cast and really only needs the MW port match, the lower Plenum needs some work to get the runners to match the uppers. Upper plenum will flow around 360 with just he port match and easily keep up with your EZ heads, the lower plenum will only flow maybe 320 cfm, the #7 is the particularly weak one but it's pretty easy to fix.
With only the runner work and not doing the plenum work as well you're leaving about 25-30HP on the table of the manifold's potential.
I agree with Ron, you may need to mill down the cross-over to clear the indy valley plate, or you can grind the valley plate where it makes contact. It may actually clear with minimal work on an RB, but on a B deck like mine with Stage VI's it was mandatory.
Well worth the work to port the plenum, I can walk you through it, I actually went a bit further than Dr Air and ported the heck out of my 2D, both upper and especially the lower.
Last edited by Streetwize; 06/12/14 11:38 AM.
|
|
|
Re: Top end for my 520" street bruiser
[Re: Airwoofer]
#1632128
06/12/14 12:19 PM
06/12/14 12:19 PM
|
Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451
OP
master
|
OP
master
Joined: Jan 2003
Posts: 4,296
Chicago, IL
|
CC Dave - Don't know about the core shift. AndyF did the port match and he used the intake on the dyno for a few pulls.
Ron - Thanks for the pics, I will be sure to keep that in mind when it comes time to bolt up the intake.
Slanty - Hope all is well!
Thoomer - I hope you can get back behind the wheel soon.
Russ - Your cars have always run hard, so not surprised you are running 9.60's with the NSS dodge. I was thinking about the big ez's in case I wanted to step it up down the road. Last minute change to the 295's. Probably for the best.
Bobby WiZE - Thanks for the intake mod tips. I will look into that for sure!
2 kids and a dog
|
|
|
Re: Top end for my 520" street bruiser
[Re: Thumperdart]
#1632132
06/12/14 02:33 PM
06/12/14 02:33 PM
|
Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
|
Quote:
Quote:
Here is my intake after I cut the exh heat crossover so it would clear the Indy valley plate. Really is not alot you have to trim off. Ron
Maybe it`s me but why the dual plane when a 520 should already have earth ripping torque and an open plenum I would think would neutralize some of that........... 
Yes Thumper its you.  Just kidding. I went with the Indy dual plane since mine is a street car and it has good low end but everyone I talked to said it will flow big time for a dual plane and be able to handle my 493 with no trouble. I would love to try a single plane one day and compare it. Ron
|
|
|
|
|
