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Old 08-31-2011, 11:21 AM   #26 (permalink)
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i average 11/11.5 on 37s and stock 4.10s. i rarely drive faster than 65. 5.29s are my next purchase.

my rpms at 65mph. my speedo is off by 10 mph but you get the idea:


i got a solid 15mpg bone stock. 13-14 with 35s.
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Old 09-02-2011, 04:16 PM   #27 (permalink)
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Nice, im guessing MOST of you guys run regular instead of premium? These motors aren't high compression, i just wouldn't see the need for premium unless your experiencing pre-detonation..

And while im at it, where is a good source to read up on the basics of the 80 series lc drivetrain (mainly motor/tranny info).... im not a big fan of the mud forum, and i didnt see a faq?

Thanks doods!
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Old 09-02-2011, 06:39 PM   #28 (permalink)
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http://forum.ih8mud.com/80-series-te...-overhaul.html


not a big fan of mud either but they have a nice FAQ.
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Old 09-02-2011, 07:06 PM   #29 (permalink)
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Thanks man! Looks like I have some reading to do.
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DD: 91 Xcab--4D's, chromo 60's, duals, locked, TR's...just the necessities
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Old 09-04-2011, 08:39 AM   #30 (permalink)
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Did a 4BT in a friends cruiser. Used a 700r4 to a split case. 4.10s and 35s. 20+ MPG so far. Without the Cummins got got a solid 10 no matter what.

Replaced the springs with air bags and gave it a 2-3 inch lift. shoved the motor back as far as we could, tie rod still comes close to the oil pan on full bump, but not a big deal.

It is a little loud, and vibrates a bit, but over all it is a pretty cool truck.





It is for his wife, we even tried to make the interior look mostly stock. Some adjustments and the shifter even works.



and every diesel needs gauges! From a acura gauge pod, cut and fit.

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Old 09-04-2011, 10:00 AM   #31 (permalink)
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Awesome. Brief summary of your fueling setup?
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Old 09-04-2011, 12:50 PM   #32 (permalink)
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Cut and modified Toyota filler to accept a diesel nozzle, stock tank, I do not remember if anything was involved in the sending unit, but it only needs a hose that goes to the bottom of the tank to siphon. Stock hard lines to the fire wall, soft line to the block mounted diaphragm pump, then the rest of the system, filters, etc., are on the block. Return goes in the stock lines as well. Gutted the charcoal canister, but needs to be there for emissions.

High pressure fueling is a VE pump with the timing advanced and fuel screw advanced, POD injectors, and a HE341 from a 2003 Dodge Ram.

Probably makes 150ish HP and 450ish ft/lbs, nothing too crazy. Out accelerates the stock motor till about 50 MPH or so, then they are pretty even, but it maintains speed much better.

700R4 is really stretched in this application, we are looking at an 4l80e or maybe even an Allison from a Chevy 2500, salvage prices are coming down, and prices for controllers are coming down.

We ALMOST went with the stock 92 transmission, but it was going to be too much of a pain in the ass.

A couple guys on Mud are doing an Isuzu 4BD1 swap with a hybrid Isuzu/Toyota setup that lets you hang the stock t-case off of the isuzu transmission (its all aisin crap anyways) but that seemed like re inventing the wheel as well. We are pretty happy with the stock Chevy stuff.
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