The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-04-2014, 01:24 PM   #1
kape
Registered User
 
kape's Avatar
 
Join Date: Mar 2013
Location: Finland,
Posts: 22
Engine Swap 454 to 6.5 diesel

Hello, My project is to change my 454 gasolin engine to 6.5 diesel engine. (Thanks my goverment gasolin taxes.)
Couple of issues coming on my mind: How those fuel return line should be shorted out, because my car has double gas tanks. Example, i choose driver side tank to feed fuel to engine, and return line is connected passenger side tank (or vice versa). Can this happend? Few months driving ,engine feeded only driver side tank--> passenger side tank may overflow?
Do i need some valve , powered by same wire as the original fuel choose valve to control return line feed.
How this is solved on truck with has originally diesel engine and double gas tanks?
Many thanks Kape
__________________
1981 C10
1982 G20 GMC
1986 C30 Dually crew cab
1990 G20 6.2 D
1969 Ford Fairlane 2d ht
kape is offline   Reply With Quote
Old 08-04-2014, 01:58 PM   #2
hatzie
Moderator
 
hatzie's Avatar
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,977
Re: Engine Swap 454 to 6.5 diesel

I have a dual tank 1976 retrofitted to a 6.5L diesel
The Pollack Motorized Fuel Valve used from 81-91 on the square body trucks has 3 fittings for feed and 3 for return. It switches both.

The valve includes a switch that selects the sender that feeds your gauge.
Electrical doesn't display well in attached JPG. See attached "Motorized Early REVB.PDF".
You should use the 87-91 AC Delco D7089C TBI dash switch that doesn't say DEPRESS FULLY.

JPG of Plumbing from Pollack (The GM OEM Valve Manufacturer)
Attached Images
 
Attached Images
File Type: pdf Motorized Early REV B.pdf (89.0 KB, 329 views)
__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.

Last edited by hatzie; 08-04-2014 at 02:08 PM.
hatzie is offline   Reply With Quote
Old 08-04-2014, 02:24 PM   #3
kape
Registered User
 
kape's Avatar
 
Join Date: Mar 2013
Location: Finland,
Posts: 22
Re: Engine Swap 454 to 6.5 diesel

switch found in rockauto.
http://www.rockauto.com/catalog/moreinfo.php?pk=98247
__________________
1981 C10
1982 G20 GMC
1986 C30 Dually crew cab
1990 G20 6.2 D
1969 Ford Fairlane 2d ht
kape is offline   Reply With Quote
Old 08-04-2014, 02:16 PM   #4
kape
Registered User
 
kape's Avatar
 
Join Date: Mar 2013
Location: Finland,
Posts: 22
Re: Engine Swap 454 to 6.5 diesel

Thanks Hatzie, i will try to find that part on in, and i forgot model and year, it's 1986 dually c30 original 454.
__________________
1981 C10
1982 G20 GMC
1986 C30 Dually crew cab
1990 G20 6.2 D
1969 Ford Fairlane 2d ht
kape is offline   Reply With Quote
Reply

Bookmarks

Tags
conversion, diesel 6.5, gas line, valve


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:29 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com