|
|
D/FW members: Good machine shop for 915 head porting?
#1003570
05/31/11 12:43 PM
05/31/11 12:43 PM
|
Joined: Jun 2004
Posts: 528
D/FW
gts95
OP
mopar
|
OP
mopar
Joined: Jun 2004
Posts: 528
D/FW
|
It's been a long time since I've had any machine work done in the D/FW area.....can you guys recommend a local shop where I can take a set of virgin 915 closed chamber 440 heads for a basic cleanup and some port work? Somebody who knows Mopar heads. I don't need them hogged out, just something along the lines of the old Mopar porting template. And maybe enlarged for the 2.14 1.81 valves.
Trying to get a quick turnaround on this.....I'm running out of time to get it ready for Mopar Nats!
1970 Super Bee, WM21, 383, auto, FY1, a/c, project!
1971 Chrysler 300 2dr, U-code, console car
1980 Chrysler LeBaron LS Limited coupe
2008 Chrysler Aspen, HEMI
2011 Ram 3500 MegaCab, 6.7
|
|
|
Re: D/FW members: Good machine shop for 915 head porting?
[Re: RapidRobert]
#1003572
05/31/11 06:07 PM
05/31/11 06:07 PM
|
Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
|
Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
|
Remember that much of the template work was removed when they cut the heads for larger valves.
I'd cut for the valves then look at any template work.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
|
|
|
Re: D/FW members: Good machine shop for 915 head porting?
[Re: RapidRobert]
#1003573
05/31/11 06:48 PM
05/31/11 06:48 PM
|
Joined: Jun 2004
Posts: 528
D/FW
gts95
OP
mopar
|
OP
mopar
Joined: Jun 2004
Posts: 528
D/FW
|
Quote:
Quote:
Trying to get a quick turnaround on this
this wont help your turnaround but read Dulcich's porting articles (3 iirc) (archived somewhere & avail on the 'net). You'll b glad you did & his take (which I highly respect his knowledge) is that the 915/906 are far more difficult to port correctly than the 902/452's which is why I am going to do my 452's (if they pass crack check) plus the extra trouble of machining the open recesses to level/equalize them. I gotta machine the KB 280's quench plateaus (451) for .035-.040 quench so might as well do it right all the way in the beginning as I'm a believer in the long block being spot on from the getgo then any additions/mods will only compliment my meticulousness  . Myself I'd port em myself rather than trusting a non Mopar shop that's prob not famil w them & I'd get the MP templates and section the top "bulb" part & use some of the laminate material to widen it .060" for the intakes (2.14-2.08=.060 in & 1.81-1.74= .070" ex). Bill Bagshaw did this decades ago & got 511 HP on a 9-1 440 (1&7/8 headers/sd intake/750dp & he used 906's
My issue is I'm running a stock (sans cam of course) 1978 440 shortblock....so the 915s are virtually a must to get the pathetically low compression up a little. Otherwise, I have several sets of the later model 452s laying around, with the hardened seats. Just need a quick and easy boost in compression in the 915s.
1970 Super Bee, WM21, 383, auto, FY1, a/c, project!
1971 Chrysler 300 2dr, U-code, console car
1980 Chrysler LeBaron LS Limited coupe
2008 Chrysler Aspen, HEMI
2011 Ram 3500 MegaCab, 6.7
|
|
|
Re: D/FW members: Good machine shop for 915 head porting?
[Re: feets]
#1003574
05/31/11 06:57 PM
05/31/11 06:57 PM
|
Joined: Feb 2005
Posts: 20,145
PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,145
PA.
|
Here's some good reading but keep in mind there are other choices out there. I checked two stock ports on a set of 440source heads on my bench and they were around 267 cfm. With a little work they are much better. https://board.moparts.org/ubbthreads/show...e=3#Post2885759
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
|
|
|
|
|
|
|
