Blue Shift: From what I've researched 87 was a transition year for the 2.5. All had DIS and just a few had the balance shafts/ oil pump arrangement. So if it has an external oil filter , it should not have the balance shafts/oil pump. Is this correct? Also what drives the oil pump in a 87 with an external oil filter. I did see an 87 2.5 with serpentine belt, external oil filter and DIS but the block was cracked.

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85 GT 3.4
14.9 @ 90 1.9 60' Old TH125/3.06
Unknown New 4T60/3.42

Saw this on eBay, thought you guys working on supercharging a duke might have a use for it.

I have a 3.0 crank and rods, 1 pc rear main.

Paging mrossum, you have a call on line 1.

I've returned temporarily - The project is on hold for awhile, but I'm still looking around at getting ahold of a crank in the meanwhile. Another area I'm looking at is the cylinder head - if one wanted to make any power, you need airflow. I've been looking at the GMPP SD iron performance head, but had little information on it until I stumbled on this:

http://members.tripod.com/~thestickman/DUKE-HEADS (Hang on... "Stickman"? - hey, you never mentioned this stuff before!)

Provided the pictures are captioned correctly, it appears the iron head shares the same port spacing and bolt pattern as our heads, but have huuuuuge ports. They also appear to come in EGR and non EGR applications, which should come in handy when trying to build something that'll pass visual inspection here in the peoples republik of kalifornia. Now, I just gotta find a manifold that'll feed that thing...

Also found another tidbit of information - HOWEVER, it seems to be full of the same hearsay you see floating around on here commonly regarding the duke. For instance, the claim that the S-10 block is thickly cast like the SD block, though I personally disassembled one and found it look exactly like my 86' Fiero engine inside, not counting the 88 style crank. The part numbers may prove useful though: http://www.msministock.com/...%20Engine%20Info.pdf

Anyways, wanted to share this before I lost the links.

Superduty heads are crossflow. Most castings (322, 323, 775, 437, etc) have the same port spacing as the standard head. The 801 casting has the port centerlines moved. The non-crossflow heads are the HO Vortec 3000 heads as found in industrial applications and Mercruiser engines. No suck.

quote Originally posted by Blue Shift: I've returned temporarily - The project is on hold for awhile, but I'm still looking around at getting ahold of a crank in the meanwhile. Another area I'm looking at is the cylinder head - if one wanted to make any power, you need airflow. I've been looking at the GMPP SD iron performance head, but had little information on it until I stumbled on this: http://members.tripod.com/~thestickman/DUKE-HEADS (Hang on... "Stickman"? - hey, you never mentioned this stuff before!) Provided the pictures are captioned correctly, it appears the iron head shares the same port spacing and bolt pattern as our heads, but have huuuuuge ports. They also appear to come in EGR and non EGR applications, which should come in handy when trying to build something that'll pass visual inspection here in the peoples republik of kalifornia. Now, I just gotta find a manifold that'll feed that thing... Also found another tidbit of information - HOWEVER, it seems to be full of the same hearsay you see floating around on here commonly regarding the duke. For instance, the claim that the S-10 block is thickly cast like the SD block, though I personally disassembled one and found it look exactly like my 86' Fiero engine inside, not counting the 88 style crank. The part numbers may prove useful though: http://www.msministock.com/...%20Engine%20Info.pdf Anyways, wanted to share this before I lost the links.

Well I never really mention the iron head as, well aluminum is better. Yes it looks stock. UNTIL you look at the intake. Unless the Holley flange is bigger than stock there is no "stockish" TBI intake out there. The Edelbrock TBI has notches out of the top of the flange. So unless you are allowed to run a Super Duty intake there is no sense in trying to fool the visual inspection in Cali. BTW the EGR head is the rarest of the rare. I have NEVER seen one and never heard of anyone with one.

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My sites
http://the-stickman.tripod.com

http://www.youtube.com/TheStickman

Bumping so I can find it to favorite this page. Also saving from the archives.

So has anything ever happened with this build? I would love to hear about it if there is more to it!