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Pontiac SD4 Engine by pcasciola
Started on: 09-02-2017 06:52 PM
Replies: 12 (650 views)
Last post by: Brianzaj on 09-26-2017 11:13 AM
pcasciola
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Report this Post09-02-2017 06:52 PM Click Here to See the Profile for pcasciolaClick Here to Email pcasciolaSend a Private Message to pcasciolaEdit/Delete MessageReply w/QuoteDirect Link to This Post

I have a bunch of parts for a Pontiac SD4 engine. The long block is complete and was never fully assembled, but the head and one of the valve covers were run on a stock Pontiac 2.5L engine. I also have a second valve cover, 2 bbl intake, two 2 bbl carbs, distributor, roller rockers, new balancer and other assorted parts (pullies, water pump, etc).

There is a bunch of surface rust on the block from sitting for a decade so the blocked will need to be tanked and new bearings and rings will be needed.

The rods are top of the line, JET forged titanium.

The head was ported and polished by Indy Cylinder Heads.

Higher res photos are available on the craigslist posting: https://cnj.craigslist.org/pts/6290865242.html

PM me your offer if interested.

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Monolith
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Report this Post09-04-2017 08:03 PM Click Here to See the Profile for MonolithClick Here to Email MonolithSend a Private Message to MonolithEdit/Delete MessageReply w/QuoteDirect Link to This Post

I couldn't really guess as to whats a fair offer, tbh. Depending on what you want out of it all though, I'd be interested. As much as I want to do other swaps, a SD has kind of always been a pleasant dream of mine

Or an FJ20ET, but that's just as hard to find :v

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Lilchief
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Report this Post09-04-2017 09:37 PM Click Here to See the Profile for LilchiefSend a Private Message to LilchiefEdit/Delete MessageReply w/QuoteDirect Link to This Post

You have a P M

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Hidalgo
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Report this Post09-07-2017 11:58 AM Click Here to See the Profile for HidalgoSend a Private Message to HidalgoEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by pcasciola:

I also have a second valve cover, 2 bbl intake, two 2 bbl carbs, distributor, roller rockers, new balancer and other assorted parts (pullies, water pump, etc).



Can one of our resident Duke experts tell me if the SD4 2 bbl intake included in this package can be equipped with a TBI from a 2.8 or 4.3L V6, or even just the stock 1988 Duke TBI with an adapter plate, and then connected to a stock 1988 DIS Duke ECM? Or will it be necessary to get a 7730 or standalone ECM with a custom harness?

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edfiero
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Report this Post09-07-2017 03:10 PM Click Here to See the Profile for edfieroClick Here to Email edfieroSend a Private Message to edfieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by Hidalgo:


Can one of our resident Duke experts tell me if the SD4 2 bbl intake included in this package can be equipped with a TBI from a 2.8 or 4.3L V6, or even just the stock 1988 Duke TBI with an adapter plate, and then connected to a stock 1988 DIS Duke ECM? Or will it be necessary to get a 7730 or standalone ECM with a custom harness?


You will need an adapter plate to connect the TBI to the Intake. You can make it yourself with a piece of aluminum stock.
2.8 TBI will not flow enough to feed an SD4. 4.3 will also be borderline at WOT. I have the 4BBL intake and 4.3 went lean on me. However I guess it might work with a 2bbl
You will need custom tune regardless.

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Hidalgo
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Report this Post09-07-2017 03:45 PM Click Here to See the Profile for HidalgoSend a Private Message to HidalgoEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by edfiero:


You will need an adapter plate to connect the TBI to the Intake. You can make it yourself with a piece of aluminum stock.
2.8 TBI will not flow enough to feed an SD4. 4.3 will also be borderline at WOT. I have the 4BBL intake and 4.3 went lean on me. However I guess it might work with a 2bbl
You will need custom tune regardless.


Thanks for the response, edfiero.
But the seller also states that the SD4 head was once installed on an otherwise stock Duke block, which means it had the stock 2.5 liters of displacement, not the 2.7, 3.0, or 3.3 liters of displacement of an SD4 block. In that situation, what TBI would be sufficient to feed an SD4 head and 2 bbl intake on a stock 2.5L Duke block?

[This message has been edited by Hidalgo (edited 09-07-2017).]

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KurtAKX
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Report this Post09-08-2017 08:48 PM Click Here to See the Profile for KurtAKXSend a Private Message to KurtAKXEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by edfiero:


You will need an adapter plate to connect the TBI to the Intake. You can make it yourself with a piece of aluminum stock.
2.8 TBI will not flow enough to feed an SD4. 4.3 will also be borderline at WOT. I have the 4BBL intake and 4.3 went lean on me. However I guess it might work with a 2bbl
You will need custom tune regardless.


Not enough information here. Went lean could be a lot of things...
which injectors?
Firing synchronous or asynch, every DRP or every other DRP like a PFI?
Fuel pressure?
What were the engine specs? Bone stock 4.3 TBI/injectors with the correct firing strategy supports 160hp before going static (100% duty cycle)

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edfiero
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Report this Post09-08-2017 09:50 PM Click Here to See the Profile for edfieroClick Here to Email edfieroSend a Private Message to edfieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by Hidalgo:


Thanks for the response, edfiero.
But the seller also states that the SD4 head was once installed on an otherwise stock Duke block, which means it had the stock 2.5 liters of displacement, not the 2.7, 3.0, or 3.3 liters of displacement of an SD4 block. In that situation, what TBI would be sufficient to feed an SD4 head and 2 bbl intake on a stock 2.5L Duke block?



What Cam do plan on using?

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oldsoandso
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Report this Post09-11-2017 03:24 AM Click Here to See the Profile for oldsoandsoClick Here to Email oldsoandsoSend a Private Message to oldsoandsoEdit/Delete MessageReply w/QuoteDirect Link to This Post

how much for the valve covers?

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Hidalgo
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Report this Post09-12-2017 08:16 AM Click Here to See the Profile for HidalgoSend a Private Message to HidalgoEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by edfiero:


What Cam do plan on using?


If possible, I would like to keep the stock roller cam in my 88 Duke, as that would make it possible to just do a head swap and leave the block in the engine compartment, and avoid having to drop the cradle.

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Brianzaj
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Report this Post09-22-2017 04:21 AM Click Here to See the Profile for BrianzajClick Here to Email BrianzajSend a Private Message to BrianzajEdit/Delete MessageReply w/QuoteDirect Link to This Post

Do you still have everything for sale? Don't know what to offer for it all, if possible, p.m. me what you need to get for it all ..... everything put together is a complete engine?

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Monolith
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Report this Post09-25-2017 08:50 PM Click Here to See the Profile for MonolithClick Here to Email MonolithSend a Private Message to MonolithEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by Brianzaj:

Do you still have everything for sale? Don't know what to offer for it all, if possible, p.m. me what you need to get for it all ..... everything put together is a complete engine?



Guy never answered his craigslist email, nor here. Don't think it's likely he'll respond. S'oz broski

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Brianzaj
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Report this Post09-26-2017 11:13 AM Click Here to See the Profile for BrianzajClick Here to Email BrianzajSend a Private Message to BrianzajEdit/Delete MessageReply w/QuoteDirect Link to This Post

Hey there ol' Bob, I FINALLY was able to get into my pm mailbox to see your P.M. , got your phone #..... when would be the best time to contact you?? Also, my phone # is 715-551-9813...... my apologies for this delay in response ( smart phones my behind.... lol.

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