Mack V8 ?'s

[bullhusk]

A guy in jersey had that 864 twin turbo in a r700 pullin a dump trailer back in the early 70s holy cow what a junk motor ! That poor guy almost went broke, Mack went an put a Maxi motor and 6 speed in her before the guy went broke!

[REOGasMackDiesel]

I wonder if a Mack V8 would interchange with the Cummins V8 ? !

Mike

[jeffmackb]

This might seem petty to some here, but the Twin Turboed END864 is not an ENDT864, it is an END864T.

Later engines were ENDT's, but not the 864.

I think I might be wrong with this statement.

veeight.

Edited March 17, 2013 by veeight

[jeffmackb]

I think I might be wrong with this statement.

veeight

Edited March 17, 2013 by veeight

[mackdaddy]

okay here is the update after working with Don at the museum. I believe the 30 something number comes from the 864 turbo'd that were NOT the standard 300HP. There were over 600 of the 300HP version. I was suprised some went up to 350HP

Mack V8 Diesel Engines.doc

Copy of ENGINE GROUPS.pdf

[Superdog]

that looks a whole lot better.

[41180]

whats the e9 525 ? i know australians had the e9 525 and later 610 but i didnt see a 610 in that info

[39 Baby Mack]

that looks a whole lot better.

I agree with that Mike

Ron

[davelakeside1]

Is there a spec sheet for an E9-500 500Hp (1990) engine similar to the END Spec sheet that was found.

I'm trying to find the Ambac Injector Pump part number for this engine. Mack part numbers don't see to work. Thanks!

[phildirt]

Here is a specification sheet for the E9 V8 as a .pdf.

Send me a private message with your email and I will send you a more detailed sheet on the E9.

I don't usually respond to updates on these 8 year old posts.

E9 500 Spec Sheet ESP.pdf

[AZB755V8]

Think this is what you are looking for on the V-pumps used before 1991.

Actual AMBAC tags on the pumps. The pump number should start with 8VBB1100 for the V-pumps.

Edited October 7, 2021 by AZB755V8
add content

[james j neiweem]

The 673 Mack naturally aspirated and later turbo versions were great economical and reliable engines. However it was to small to compete with the 855 Cummins and its turbocharged versions in the day. Mack's first answer was the 711(never factory turboed) which had its share of problems and it was still to small to compete with Cummins and Detroit. Next Mack went with the 864 V8 but as with the 711 it failed in the market place. About this time Cat entered the scene. Mack just didn't have a big bore product to compete with Cummins Cat and Detroit. Mack lost diesel momentum until the 237/300/350 came along. These were great engines which sold well, but they were still on the small side. The E-7 mechanical was a great engine but again on the small side. By the time the E9 was perfected Mack had lost the V8 momentum. The Mack electronic emissions engines were also problem prone as were other manufacturers engines. If Mack had pursued the "Big Six" instead of the V8 or along side it, they would have been better off IMHO. The present MP-7&8 engines are Idecent engines but still can't compete in the western mountains or Canada. Volvo wants to push their product for these regions with the ISX-15. They would be better off pushing the ISX- 15 in the new Pinnacle. This would put Mack back on the same page with Paccar, Freightliner and VW (Navistar). When was the Reo V-8 first used and how long did its run last. Who else used the Reo V-8 besides White? I see they were 440 cubes and 1200 pounds.

Edited October 11, 2021 by james j neiweem

[Jamaican Bulldog]

On 10/9/2021 at 11:47 AM, james j neiweem said:

The 673 Mack naturally aspirated and later turbo versions were great economical and reliable engines. However it was to small to compete with the 855 Cummins and its turbocharged versions in the day. Mack's first answer was the 711(never factory turboed) which had its share of problems and it was still to small to compete with Cummins and Detroit. Next Mack went with the 864 V8 but as with the 711 it failed in the market place. About this time Cat entered the scene. Mack just didn't have a big bore product to compete with Cummins Cat and Detroit. Mack lost diesel momentum until the 237/300/350 came along. These were great engines which sold well, but they were still on the small side. The E-7 mechanical was a great engine but again on the small side. By the time the E9 was perfected Mack had lost the V8 momentum. The Mack electronic emissions engines were also problem prone as were other manufacturers engines. If Mack had pursued the "Big Six" instead of the V8 or along side it, they would have been better off IMHO. The present MP-7&8 engines are Idecent engines but still can't compete in the western mountains or Canada. Volvo wants to push their product for these regions with the ISX-15. They would be better off pushing the ISX- 15 in the new Pinnacle. This would put Mack back on the same page with Paccar, Freightliner and VW (Navistar). When was the Reo V-8 first used and how long did its run last. Who else used the Reo V-8 besides White? I see they were 440 cubes and 1200 pounds.

It really seems deliberate that Volvo limited Mack's powertrain choices especially after the MP series came out. Imagine how many Macks would have been sold if they offered Cummins in the Granites, pinnacle, Titan and even now the Anthem. It also seems they purposely designed the newer Mack's to not be able to use engines bigger than 13 liters

[RoadwayR]

Forgive me for resurrecting this old thread, but I am doing a little research on the earlier Mack V-8's and have a few questions.  First off, according to some of my old service manuals, the 864's had a different bore and stroke than the 865/866's.  The 864 being 5 X 5.5 vs. 5.5 X 5 for the later engines.  The rod journals are also quite a bit larger.  I am wondering if the 864 had crankshaft issues?  I also see the 864's used a Bosch PSJ rotary pump, and some of the later V-8's used a Bosch APE in-line.  I know the PSJ's could be trouble, at least they were on GMC Toroflows. 

Thanks.

    

[AZB755V8]

On 6/25/2024 at 11:45 PM, RoadwayR said:

Forgive me for resurrecting this old thread, but I am doing a little research on the earlier Mack V-8's and have a few questions.  First off, according to some of my old service manuals, the 864's had a different bore and stroke than the 865/866's.  The 864 being 5 X 5.5 vs. 5.5 X 5 for the later engines.  The rod journals are also quite a bit larger.  I am wondering if the 864 had crankshaft issues?  I also see the 864's used a Bosch PSJ rotary pump, and some of the later V-8's used a Bosch APE in-line.  I know the PSJ's could be trouble, at least they were on GMC Toroflows. 

Thanks.

    

Don't know what you are asking but the 864 is the worst of all the Mack V8's.

The bore and stroke are 5x5.5 for 864 and 5.25x5.0 for the 865/866.  E9 is 5.375x5.5. Rod journals are all different. 864 Bad for multiple reasons, first Mack V8, bad heads, bad injection pump, low power, most all non-turbo'ed. These days parts are nonexistent. Sold my last 864, 10 years ago for $400 locked-up and for parts, had the twin turbo set-up and sold that as well.

865/866 are better but still had head issues and the V-pump.

E9's good "IF" taken care of. Will make good power but overheating will kill them. Still had head issues. They did have both the V-pump and inline pumps.