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12-03-2013, 05:26 PM
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#1 |
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Registered User
Join Date: Jul 2011
Location: hanceville alabama
Posts: 268
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LR4/4l60e in 87
I plan on taking the outdated 305 in my 1987. I plan on using dingo mounts. My main questions are:
What fuel pump should I use since I do have the 87 tanks? Will I run into any problems running the OD with my gears being 3.08 on a 27" tall tire? I calculated it at 1878rpm running 70mph. Which I'll be mostly driving 55-60 when I actually drive it. Also any part numbers would be great, especially on the fuel lines and parts. I'm not looking into building a performer, just a reliable truck that can take me anywhere and get decent fuel doing it! |
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12-11-2013, 03:44 PM
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#2 |
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Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: LR4/4l60e in 87
I would use the Delco EP381 in each tank (I understand you have dual tanks, right?). If so, you will need a high pressure switching valve also.
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1974 Jimmy- 5.3/4L80e/NP241 |
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12-17-2013, 10:53 PM
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#3 |
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Addicted to Rust
 
Join Date: Dec 2009
Location: Abbeville SC
Posts: 1,030
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Re: LR4/4l60e in 87
I have walbro pumps in my 87. It was a factory TBI truck. I rewired the dash switch to use a relay to switch pumps. The connector showed evidence of getting hot, no trouble since and I have 16k miles on the swap. I am running an 88 up rear end with 3.42 cogs and a 28.9 inch tall tire previously had a 26 inch tall tire and have not checked the mileage since changing rear tires. I would think that the 3.08 would be tallish in OD and probably would do better in drive til 65-70. Jay
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Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public. |
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