engine,trans,xfer ? swap - Pirate4x4.Com : 4x4 and Off-Road Forum

boxerhips · 07-11-2003, 09:35 PM

I'm have a 90(1995) with an engine in need of a rebuild. I would like to build it for rock crawling, but would like to drive on street. I have a 5.0,aod and a dana 300 sitting in my garage. In my mind I have 4 options( I know there are many more),but I'll stick with 4. 1) Rebuild 3.9, keep r380, add Ashcroft crawler box, keep 3.54. gives me about 105 to 1( I would like to know how they get 116 to 1 from 3.32x 8.933x3.54) in low and 3.53 in final drive cost $4500.00-I do all my labor. 2) 5.0,aod,adapter,lt230, crawler box,3.54. 76 to 1 low and 2.894 to 1 final. cost $4500.00. 3) 5.0, aod, adapter, dana 300, 4.10, driveshafts, cut and center rover rear. 40 to 1 low and 2.747 to 1 final. 4) chevy I would sell what I have and go chevy engine, turbo 350, dual xfer and something for the rear, cut rover or someting else. Know that I do have 2 sets off rover wheels stock and mrt aluminum bead locks,also I like the rear disc brakes, I though about changing the rear but that was even more $$. I have been driving myself crazy for weeks and would like somebody to help.. Didn't want to spend more than 5k. I have many?'s but the two main ones 1) crawl ratio-105 stick or 76 auto, is 40 to 1 enough, how much more would the axels like the auto over the stick(breaking) 2) stength which is stonger

JSBriggs · 07-11-2003, 09:46 PM

Depends....How big of tire are you running/planning to run. Of 35 or less I'd go SBC/NV4500/LT230 and beef upo the rover axles. If you plan to run over 35" tires, well look into Doug M, Bill R. or Timm C. truck s for ideas.

-Jeff

Oh yea, welcome newbie

Leafsprung · 07-12-2003, 07:46 AM

Sell the whole mess and buy a nicely built FJ, Bronco etc. Defender and budget rockcrawler really dont get along well in the same sentance. You will be time and money ahead to sell it off and buy a nice truck.
-Regards
-Ike Goss

JSBriggs · 07-12-2003, 10:30 AM

Ike has a good point. Build a buggy from a fullsize Umerrycan truck, remove the body and attach some rover body panels. Basically do what Sam (crazy ass Ozzy guy) has done but use a domestic platform. For the $ you will get from selling your D90 you should have $ to spare when it is all said and done.

-Jeff

boxerhips · 07-12-2003, 11:50 AM

Newbie, yeah. I have a 1973 EB(early bron-co), with 302 with 35's and 5.5 lift, now. Had a FJ40, didn't like it at all. If going with SBC, what xfer's would I use(ass-u-me I use 2 ). Do I waste $$ money on Rover rear? What rear that has a center diff is the closest to D90 width? I would like to go with auto if I have to start from scatch. Thanks Tim

merv · 07-14-2003, 06:05 AM

Good idea, Use local metal for the truck, and pick up some cheap (series) panels to give it the LR look.

Gotta be cheaper.

oivinberg · 07-28-2003, 08:42 AM

you can use the 727auto from the scout.
buy the adapter from aa and use a chevy engine.
the autobox should fit both the dana 300 and lt230
t-box

boxerhips · 07-28-2003, 08:30 PM

I think that the 727 only will go with th BW transfer case. Ashcroft does not make their crawler box anymore. That sucks. Now we " Rover fools" need to really get on Mr. Timm Cooper about his (bcboffroad.com). I'm starting to think dual transfer is the way to go, mabee a 203/205 with th lt230. Who can make an adapter? Tim

RockRover · 07-28-2003, 09:02 PM

Sounds like you reaaaallly want to keep your Rover...Well to tell you the truth, I loved mine so much I'm beating her to death, and thinking of more evil plans to boot. Smart way to go? Nah...But it is fun!

Take it from me...If your plans are to keep the Rover while doing SOME moderate trial runs (with a max 37" MTR) , then go for the 302 swap. You'll love the power...

If you want a serious crawler that can handle anything in the country...Then be prepared to PAY or, be prepared to tube her out beyond the point of recognition.

I'm way past the point of no return, so I'm in a situation were I get to decide the ultimate fate of my 90 without too much fear of reproach...I think Camo said it best when asked if he would start from a vehicle platform or start with a manuf. chassis....His answer was start with a manuf. chassis....Too many compromises when dealing with a built platform.

Me? I don't like body-damage...So more tube is in my very near future. I can see my rig becoming like SG's very soon. Too bad...So sad.

--D

--D

07-11-2003, 09:35 PM	#1 (permalink)
boxerhips Registered User Join Date: Feb 2002 Member # 10336 Location: washington dc Posts: 31	engine,trans,xfer ? swap I'm have a 90(1995) with an engine in need of a rebuild. I would like to build it for rock crawling, but would like to drive on street. I have a 5.0,aod and a dana 300 sitting in my garage. In my mind I have 4 options( I know there are many more),but I'll stick with 4. 1) Rebuild 3.9, keep r380, add Ashcroft crawler box, keep 3.54. gives me about 105 to 1( I would like to know how they get 116 to 1 from 3.32x 8.933x3.54) in low and 3.53 in final drive cost $4500.00-I do all my labor. 2) 5.0,aod,adapter,lt230, crawler box,3.54. 76 to 1 low and 2.894 to 1 final. cost $4500.00. 3) 5.0, aod, adapter, dana 300, 4.10, driveshafts, cut and center rover rear. 40 to 1 low and 2.747 to 1 final. 4) chevy I would sell what I have and go chevy engine, turbo 350, dual xfer and something for the rear, cut rover or someting else. Know that I do have 2 sets off rover wheels stock and mrt aluminum bead locks,also I like the rear disc brakes, I though about changing the rear but that was even more $$. I have been driving myself crazy for weeks and would like somebody to help.. Didn't want to spend more than 5k. I have many?'s but the two main ones 1) crawl ratio-105 stick or 76 auto, is 40 to 1 enough, how much more would the axels like the auto over the stick(breaking) 2) stength which is stonger

07-11-2003, 09:46 PM	#2 (permalink)
JSBriggs Registered User Join Date: Feb 2002 Member # 9768 Location: Auburn CA Posts: 1,387	Depends....How big of tire are you running/planning to run. Of 35 or less I'd go SBC/NV4500/LT230 and beef upo the rover axles. If you plan to run over 35" tires, well look into Doug M, Bill R. or Timm C. truck s for ideas. -Jeff Oh yea, welcome newbie __________________ All it needs is just a little luvin'

07-12-2003, 07:46 AM	#3 (permalink)
Leafsprung Registered User Join Date: Jul 2002 Member # 12663 Location: Oregon Posts: 1,263	Budget Sell the whole mess and buy a nicely built FJ, Bronco etc. Defender and budget rockcrawler really dont get along well in the same sentance. You will be time and money ahead to sell it off and buy a nice truck. -Regards -Ike Goss __________________ I am what I am - Popeye

07-12-2003, 10:30 AM	#4 (permalink)
JSBriggs Registered User Join Date: Feb 2002 Member # 9768 Location: Auburn CA Posts: 1,387	Ike has a good point. Build a buggy from a fullsize Umerrycan truck, remove the body and attach some rover body panels. Basically do what Sam (crazy ass Ozzy guy) has done but use a domestic platform. For the $ you will get from selling your D90 you should have $ to spare when it is all said and done. -Jeff __________________ All it needs is just a little luvin'

07-14-2003, 06:05 AM	#6 (permalink)
merv Granite Guru Join Date: Jan 2002 Member # 9396 Location: Kildare, Ireland Posts: 540	Good idea, Use local metal for the truck, and pick up some cheap (series) panels to give it the LR look. Gotta be cheaper. __________________ Merv. Warning, spellchecker is switched off, gramma may be errotic.

07-12-2003, 11:50 AM	#5 (permalink)
boxerhips Registered User Join Date: Feb 2002 Member # 10336 Location: washington dc Posts: 31	Newbie, yeah. I have a 1973 EB(early bron-co), with 302 with 35's and 5.5 lift, now. Had a FJ40, didn't like it at all. If going with SBC, what xfer's would I use(ass-u-me I use 2 ). Do I waste $$ money on Rover rear? What rear that has a center diff is the closest to D90 width? I would like to go with auto if I have to start from scatch. Thanks Tim

07-28-2003, 08:42 AM	#7 (permalink)
oivinberg Registered User Join Date: Jul 2003 Member # 21539 Location: norway Posts: 1	you can use the 727auto from the scout. buy the adapter from aa and use a chevy engine. the autobox should fit both the dana 300 and lt230 t-box

07-28-2003, 08:30 PM	#8 (permalink)
boxerhips Registered User Join Date: Feb 2002 Member # 10336 Location: washington dc Posts: 31	I think that the 727 only will go with th BW transfer case. Ashcroft does not make their crawler box anymore. That sucks. Now we " Rover fools" need to really get on Mr. Timm Cooper about his (bcboffroad.com). I'm starting to think dual transfer is the way to go, mabee a 203/205 with th lt230. Who can make an adapter? Tim

07-28-2003, 09:02 PM	#9 (permalink)
RockRover Rock God Join Date: Apr 2001 Member # 4101 Location: Santa Fe Posts: 2,232	Sounds like you reaaaallly want to keep your Rover...Well to tell you the truth, I loved mine so much I'm beating her to death, and thinking of more evil plans to boot. Smart way to go? Nah...But it is fun! Take it from me...If your plans are to keep the Rover while doing SOME moderate trial runs (with a max 37" MTR) , then go for the 302 swap. You'll love the power... If you want a serious crawler that can handle anything in the country...Then be prepared to PAY or, be prepared to tube her out beyond the point of recognition. I'm way past the point of no return, so I'm in a situation were I get to decide the ultimate fate of my 90 without too much fear of reproach...I think Camo said it best when asked if he would start from a vehicle platform or start with a manuf. chassis....His answer was start with a manuf. chassis....Too many compromises when dealing with a built platform. Me? I don't like body-damage...So more tube is in my very near future. I can see my rig becoming like SG's very soon. Too bad...So sad. --D --D __________________ Hendrix 'X' Chassis #006 http://www.hunt4steve.com/Doug.html

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