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Just dreaming 8V92

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Just dreaming 8V92
Sat Jun 20, 2009 10:38 am


I have been thinking here lately that if I was going to ever change my engine - - would it be an easy to fit an 8V92 with turbo in my 1972 Eagle 05? I know that a four stroke is the way to go but I just dont want it to be a big process. I think an 8V92 would be a big step up, all I would want is to have the power to keep up with the big boys especially going up hills.
Manny & Darlene's
1972 Silver Eagle 05
VIN # 8851
8V71 / HT740 4 Speed Automatic
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buscrazyinFL
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Re: Just dreaming 8V92
Sat Jun 20, 2009 11:04 am


Manny a 8v92 is a good fit for your 05, I could have any engine I choose but stay with the 8v92 up hill down hill and fuel mileage I run about the same as the 4 strokes even do better than some of the 60s and Cummins turning 1800 or 1900 rpm I get a true 7.5 mpg day in and day out and could do better if I ran around 60 mph

good luck
Clifford
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Re: Just dreaming 8V92
Sat Jun 20, 2009 12:44 pm


Clifford will my transmission bolt up to an 8V92? Would I have to modify my frame to install the 8V92? Would I have to change my radiator or can I use the same one? I would like to rebuild one some day from scratch. I just want to learn as much as I can about diesel engines it is facinating to me. How much do you think it would cost to do one? It is way too hot here in FL to do anything on my Eagle right now, so I thought I would ask some questions to pass the time. I love to work on my Eagle but here in Florida this time of year it is VERY HOT!!!!
Manny & Darlene's
1972 Silver Eagle 05
VIN # 8851
8V71 / HT740 4 Speed Automatic
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buscrazyinFL
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Re: Just dreaming 8V92
Sat Jun 20, 2009 6:56 pm


Manny, your transmission will bolt up to 8v92.The 8v92 is a easy swap you even use your 8v71 engine mounts here is a list of things needed
different air cleaner 1600cfm
rear mount the turbo so there is no need to move the rear electric panel and raise the floor
new piping to the turbo
new flex plate
as for cooling not knowing the size of your system I don't know.
a little fab work on the mitre box bracket to make room for the balancer on the front of the 8v92
the 8v92 is 2 inches longer than a 8v71 and if I was doing it I would shorted my drive shaft and install the 92 in the same place as the 71 mine sets back 2 inches and I don't like the angle on my fan drive and mitre box good luck

Clifford
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Re: Just dreaming 8V92
Sat Jun 20, 2009 7:13 pm


Here's some info I put together in 2000 when I did mine. I will try to answer your questions as they occur.

I changed my 8V71N to a 8V92TA(500HP). Here is some information for you to consider:

There are a LOT of over the road trucks running around at 80,000 pounds with the 495 converter.

With the 92 your shift points should be:

1-2 1900-2050 rpm
Lockup - 2000
2-3 2025-2100
3-4 2000-2100

The HT740 is part # 6884538. You should recalibrate the valve body to part # 23040804 Specs.

The 495 converter is 2.391 ratio, 496 is 1.78 ratio.

Upon the advice of a lot of experienced folks I know I did NOT change the converter. Mine works great but I do not hammer it from a stop. I use the power
to climb.

Here are some of the parts you will need:

8928605 low profile blower housing (could be 8922167)
5104464 low mount engine bell housing from a Ford Truck with a 6v92 or 8v92
9402015 crankbolts (12)
23045507 adapter hub, flexplate to crank
5143106 Y manifold
8922502 front turbo brackets
E8927027 Garret Turbo A/R .81
5101174 double cooler w/wp pipe
A BIGGER RADIATOR!!!!!!

Be sure to plug the 2 holes (5/8")between the blower and govenor housing!

Drill the lube orifice for the front blower bearing if you go with the optional turbo mount.

I do not know the SN of your engine. I assume it is a Silver. It should probably have 9G90 injectors.

For what its worth, if you allow someone to patch this engine in, you will probably end up with a lot of money in it and never be happy with it.

I would pull the transmission, have it recalibrated, dyno it and use the same torque converter. Install a larger radiator.
Joe Laird
'78 05
Sioux Falls, SD
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akroyaleagle
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Re: Just dreaming 8V92
Sat Jun 20, 2009 8:14 pm


Manny, we just got finshed with installing a truck engine in a Eagle if you do decide to do it I have most of the parts you need.Ps I can show you how to change the shift points on you transmission that is not a big deal good luck

Clifford
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Re: Just dreaming 8V92
Sat Jun 20, 2009 10:16 pm


Have you considered making your engine a 370 hp? The turboed 8-71 is a mightly fine engine and I believe you can do it for a lot less than repowering to 8-92. Smooth, rock solid, and 100 horses more. You will still have to upgrade your intake and exhaust as Clifford mentioned, and rad too unless it is in excellant condition, in addition to rebuilding your engine. Use same mounts, trans valve body, driveshaft, etc. Just an idea. Good luck Manny.
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Re: Just dreaming 8V92
Sun Jun 21, 2009 7:51 am


Mark I have thought about rebuilding my 8V71 and also turboed I just want more horse power. Now if only my ship would come in LOL. :lol:
Manny & Darlene's
1972 Silver Eagle 05
VIN # 8851
8V71 / HT740 4 Speed Automatic
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buscrazyinFL
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Re: Just dreaming 8V92
Sun Jun 21, 2009 8:24 am


Manny,take a listen and may your dreams come true :D :D .Here's that truck engine Clifford mentioned,enjoy
http://www.youtube.com/watch?v=hu-uvRt1vWI
van
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Re: Just dreaming 8V92
Sun Jun 21, 2009 7:19 pm


My 740 shift points need to be raised higher...What do I need to do.

Thanks, Jim
Jim & Denise
"Casper" Eagle 01 1966
"Eagle 2" Model 15 1989
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