Guest Craig280z Posted May 17, 2002 Share Posted May 17, 2002 I have found some posts in the archives about the fuel lines and I guess I will need to replace my stock fuel lines in order to feed my LT1 engine. I saw several people say that 8 AN is the size to use. Is this equivalent to 1/2" Aluminum Tubing? Is it really necessary to replace the fuel lines? I will be running a stock LT1 engine. Can anyone share any experience with a stock LT1 and stock 78 280z fuel lines and pump? Thanks Craig Quote Link to comment Share on other sites More sharing options...
Guest 1fastz Posted May 17, 2002 Share Posted May 17, 2002 The pump is a no no but the fuel lines fine up to about 300 horses especialy with a high preasure fuel injection setup . Quote Link to comment Share on other sites More sharing options...
Guest Craig280z Posted May 17, 2002 Share Posted May 17, 2002 Thanks for the reply. Oh. I thought the pump was ok to use. Anyway, do you know of a good low cost pump that can be installed easily? I guess changing the pump is easier than routing new fuel lines Thanks Craig Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted May 17, 2002 Share Posted May 17, 2002 Look in the archives under fuel pump or something like that. There was a post about using a Ford EFI van fuel pump that was cheap and it was external meaning you don't to get into the fuel tank to change it. I think it was a van, it was either that or a P/U truck pump. A search on fuel pumps should net you what you need. Regards, Lone Quote Link to comment Share on other sites More sharing options...
Tim240z Posted May 17, 2002 Share Posted May 17, 2002 I justpurchase a pump from summit which costs less than 100 bucks for my LT1. For now I forget the brand....but it is a brand name. I am buying my hard lines today from McMaster Carr. 3/8th supply and 5/16 return. That is what my vernier said that stock lines are. That equates to -8 supply and -6 return. Hope this helps. If you want to know the details on the pump, let me know and I will check when I get home tonight. Nevermind I found it: Tim scroll down to mallory Quote Link to comment Share on other sites More sharing options...
Guest Blazer406 Posted May 17, 2002 Share Posted May 17, 2002 FWIW.... I think this is the same pump I bought from Summit. I use it on my carbed 350. I think it is rated at 43 GPH @ 45 psi. I managed to get about 44 gph thru a return style regulator (set @ 7 psi) and all the lines all the way to the carb..... and this was with no batt charger... voltage was around 12v. I am sure I can flow probably 50 gph when I have 13.8v. Damn good pump for the $. Quote Link to comment Share on other sites More sharing options...
Mike Mileski Posted May 17, 2002 Share Posted May 17, 2002 The number on an AN line indicates its size in sixteenths of an inch. Therefore -8 is 1/2" (8/16), -6 is 3/8" (6/16), etc. Mike Mileski Tucson, AZ Quote Link to comment Share on other sites More sharing options...
Tim240z Posted May 17, 2002 Share Posted May 17, 2002 They don't have aluminum in the correct sizes, so I am getting the 'double wall' steel lines, which is bendable and flareable (not a real word I'm sure). I have a tube bender and tube flarer from summit. Tim Quote Link to comment Share on other sites More sharing options...
Guest Craig280z Posted May 18, 2002 Share Posted May 18, 2002 Lots of good information. Thanks everyone. I'm going to try the stock lines and stock pump for now but I'll circle that fuel pump in the summit catalog. Thanks! What kind of line are you buying from McMaster? Aluminum, Steel, Flexible? How do you plan on bending it? Thanks Craig Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted May 18, 2002 Share Posted May 18, 2002 Originally posted by Mike Mileski:The number on an AN line indicates its size in sixteenths of an inch. Therefore -8 is 1/2" (8/16), -6 is 3/8" (6/16), etc. Mike Mileski Tucson, AZ Mike, Thanks for that info, I've always wondered what the heck the nomenclature meant on AN lines. Appreciated. Regards, Lone Quote Link to comment Share on other sites More sharing options...
Tim240z Posted May 18, 2002 Share Posted May 18, 2002 The number on an AN line indicates its size in sixteenths of an inch. Therefore -8 is 1/2" (8/16), -6 is 3/8" (6/16), etc. This makes sense but then what is it measuring, ID or OD?By looking at the specs on Earls SS hose, the -8AN hose has an ID of 7/16 inch and the -6AN hose has an ID of 11/32 inch. So if the OD of the fittings are 1/2 inch and 3/8 inch respectively, will they fit? I know that SS braided hose does not stretch very much. Tim Quote Link to comment Share on other sites More sharing options...
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