Super Duty Four Rebuild (Page 3/5)
zkhennings DEC 14, 03:15 PM
Very cool, excited to see this progress
FieroWannaBe DEC 15, 11:07 AM
One new nugget of information not in the often shared Super Duty guide PDF, is that pontiac had 2 different SD4 head gaskets made.
GM 10031324 for the cast iron head
and
GM 10038952 for the aluminum heads

Both are Fel-Pro 1015 gaskets in the build manual. However They have different Fire-rings to prevent brinelling of aluminum heads.




I currently have a new 1015 head gasket.


I ordered the last 1015-1 gakset from Rockauto. We will see if the right gasket shows up, but the interchange information doesnt match up to the Fel-Pro website description.



The build manual shows a Fel Pro 1015 gasket, but illistrates the fire ring difference.


I will need to get all three gaskets together to compare, the 1015-1, the 1015, and my gasket the engine had when i took the head off.

[This message has been edited by FieroWannaBe (edited 12-15-2022).]

zkhennings DEC 16, 11:21 AM
Wow I am very surprised you are able to find parts for this thing on RockAuto, do you have to search by part# or is there some vehicle you are able to enter that used this motor? It was never used in any production vehicle was it?
FieroWannaBe DEC 16, 12:18 PM

quote
Originally posted by zkhennings:

Wow I am very surprised you are able to find parts for this thing on RockAuto, do you have to search by part# or is there some vehicle you are able to enter that used this motor? It was never used in any production vehicle was it?



I had to search by GM part number and/or Fel Pro part number. They really only carry some gaskets and bearings. The Super Duty engine was never used as any production engine, but i shares 90% of its design with the Factory Duke, most bearings and gaskets should interchange with a duke, if these parts store parts are up to the stresses of higher output is the real issue. The closest production engine to a SD4 is the Vortec 3000 3.0L industrial engine. although there are many dimensional similarities, It is based on the Chevy II I4, not the Iron Duke.

I can show some of the differences in the gaskets between a production Iron Duke and the Super Duty Duke to show how different they really are.

Pretty much any part off the shelf specific to the Super Duty engine is N.O.S. I cant find most the parts listed in the build manuals save for some gaskets and bearings,

[This message has been edited by FieroWannaBe (edited 12-16-2022).]

La fiera DEC 19, 08:03 PM
https://youtube.com/watch?v...Rdxns&feature=shares

This one is at Callies shop!
FieroWannaBe DEC 21, 02:16 PM
Head Gaskets as I have them:
1015-1 - this has a larger fire ring (looks to be not steel material) and has black-ish gasket material. Marked R1 10151

1015 - This is a darker blue with a large fire ring, marked R5 1015

515SD - This is blue stripe material with a large fire ring (similar in size to my original head gasket. This is has more gasket material than the others, but all holes and bores line up.

9405 PT-1 - This has a very small fire ring completely encased by the blue stripe material. This is the factory replacement Duke gasket.

1015 - This is the head gasket my SD4 came with. It closest resembles the 515SD in construction, but is the overall size of the 9405 PT-1.
La fiera DEC 22, 12:24 AM
https://youtube.com/watch?v...GOsPk&feature=shares

Very similar to the Huffaker!
FieroWannaBe DEC 22, 10:15 AM

quote
Originally posted by La fiera:

https://youtube.com/watch?v...GOsPk&feature=shares

Very similar to the Huffaker!



That doesn't look very much like a Super Duty 4.
FieroWannaBe DEC 26, 08:53 AM
https://www.ebay.com/itm/38...r=artemis&media=COPY
Here is an assembled 437 head listed on Ebay for $1500 buy it now price.



All said and done, I wont be far off this mark machining and assembling my 801 head.

And a ported 4 barrel intake for $700



https://www.ebay.com/itm/38...r=artemis&media=COPY

[This message has been edited by FieroWannaBe (edited 12-27-2022).]

FieroWannaBe DEC 28, 01:03 PM
I was able to flow test the Iron head, with and without the 2BBL intake, and with a 1.5" exhuast stub attached. Done on a SF750.

The iron head would be great for a street engine with a milder than wilder camshaft, not a lazy port, and good velocity. I am looking forward to finishing the '801 head to see how much better it really is.