398704
#1
398704
Looking for 398704 RH Exhaust Manifold that uses a doughnut gasket in the rear exit or help with the year of this application. ericsolds@sbcglobal.net
or 440-665-5083cell I tried to attach a picture of the manifold I am looking for, Eric
or 440-665-5083cell I tried to attach a picture of the manifold I am looking for, Eric
#2
398704
This is from the 442.COM parts id section:
YEAR.......ID/.....CASTING.....APPLICATIONS
USED.....CODE...NUMBER
'66...........4.......398704.......RH; 330. Standard issue manifold.
'68 - '73....5.......398704.......RH; X-over. 350. Delta 88.
I should have either one. What year are you in need of? Thanks, Bob.
YEAR.......ID/.....CASTING.....APPLICATIONS
USED.....CODE...NUMBER
'66...........4.......398704.......RH; 330. Standard issue manifold.
'68 - '73....5.......398704.......RH; X-over. 350. Delta 88.
I should have either one. What year are you in need of? Thanks, Bob.
#4
This is from the 442.COM parts id section:
YEAR.......ID/.....CASTING.....APPLICATIONS
USED.....CODE...NUMBER
'66...........4.......398704.......RH; 330. Standard issue manifold.
'68 - '73....5.......398704.......RH; X-over. 350. Delta 88.
I should have either one. What year are you in need of? Thanks, Bob.
YEAR.......ID/.....CASTING.....APPLICATIONS
USED.....CODE...NUMBER
'66...........4.......398704.......RH; 330. Standard issue manifold.
'68 - '73....5.......398704.......RH; X-over. 350. Delta 88.
I should have either one. What year are you in need of? Thanks, Bob.
your casting # is a #4 manifold.
417754 is the casting # of a #5 casting with a straight-down exit. The FAQ should be changed to say that.
Your 45 degree down and back exit can be either a #4 or #3 casting. The donut type (I think) were used on the small block big cars- so, Delta 88's, Jetstar 88, etc.
#5
Donut
Yet another FAQ-SNAFU from copy-paste-forget to change the #
your casting # is a #4 manifold.
417754 is the casting # of a #5 casting with a straight-down exit. The FAQ should be changed to say that.
Your 45 degree down and back exit can be either a #4 or #3 casting. The donut type (I think) were used on the small block big cars- so, Delta 88's, Jetstar 88, etc.
your casting # is a #4 manifold.
417754 is the casting # of a #5 casting with a straight-down exit. The FAQ should be changed to say that.
Your 45 degree down and back exit can be either a #4 or #3 casting. The donut type (I think) were used on the small block big cars- so, Delta 88's, Jetstar 88, etc.
Thanks Brett
#6
If anyone has the manifold for sale that is pictured, can they send me a picture of the one they have or post a picture of the entire manifold here. ericsolds@sbcglobal.net
#7
does the outlet chamfer vary from 'donut' to non type? And what are the visual que's
Thanks Brett
=====================
Yes, I believe so. I have seen both types, not sure if the donut type was always BB or always Big Car or what. Visual indicators... of what? Donut use?
The non-donut type has a tapered outlet on the manifold. The donut type has a squared off shoulder end with a nicely machined circular recess into which the donut fits.
Pretty sure you "can" use either type
1) common no-donut manifold or
2) donut type with a donut, which forms the tapered mate to the pipe's tapered flange.
Thanks Brett
=====================
Yes, I believe so. I have seen both types, not sure if the donut type was always BB or always Big Car or what. Visual indicators... of what? Donut use?
The non-donut type has a tapered outlet on the manifold. The donut type has a squared off shoulder end with a nicely machined circular recess into which the donut fits.
Pretty sure you "can" use either type
1) common no-donut manifold or
2) donut type with a donut, which forms the tapered mate to the pipe's tapered flange.
#8
398704 Manifold
If anyone has the manifold for sale that is pictured, can they send me a picture of the one they have or post a picture of the entire manifold here. ericsolds@sbcglobal.net
Brett
#9
398704 manifold that uses doughnut gasket
I know that this part number is used on more than 1 style of this manifold. Please see the picture that I posted on ClassicOlds. I have attached it. I need the style that is machined at the rear for a doughnut gasket to be installed. I will attach a better close-up Eric
#14
398704
I feel I have a slight leak at the connection. I think the pipe will conform to a doughnut gasket much better and completely seal. The exhaust shops are using flanges cut out of flat plate steel and you can not put the smoke behind them to seal like the old stamped style flanges.
#15
I feel I have a slight leak at the connection. I think the pipe will conform to a doughnut gasket much better and completely seal. The exhaust shops are using flanges cut out of flat plate steel and you can not put the smoke behind them to seal like the old stamped style flanges.
#16
that seems li good solution, factory parts.
Here is a photo of the two type oultets from the Canadian Mother Loade
DennisMotorsetc11_zps652663ec.jpg
Here is a photo of the two type oultets from the Canadian Mother Loade
DennisMotorsetc11_zps652663ec.jpg
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