Fuel pump recommendation

[Jclgodale3]

Would like to go with an external fuel pump and regulator for the LT1 going into the 68. Any recommendations? Brands? Specs?

 

[Twin_Turbo]

I've always liked the SX and Aeromotive pumps but they're expensive. A good Bosch internal or external mount pump will do. Never cared much for the walbros.

 

[mrvette]

AZone used to sell a series of chassis/frame mounted pumps...

but the frame mounted units are getting fairly rare....

They all a fairly standard configuration....in at one end, connections and output on the other end...

 

[Jclgodale3]

Thanks guys. Are the Bosch pumps readily available? Retailers?

 

[7t2vette]

I recently bought a FAST EZ-EFI kit, and it came with a Carter external pump. I am not using it because I have decided to go with an in-tank pump set up instead, so if you are interested I will sell it to you for a good price.

:beer:

 

[Jclgodale3]

I recently bought a FAST EZ-EFI kit, and it came with a Carter external pump. I am not using it because I have decided to go with an in-tank pump set up instead, so if you are interested I will sell it to you for a good price.

:beer:

May be interested. Can you email pics and price to [email protected]? Thanks and lmk

 

[phantomjock]

Fuel System Thoughts Please!

FUEL SYSTEM THOUGHTS PLEASE!

Not intending to Hijak this thread - just thought it sorta fits in here too.

In my typical "Parallel-Activities", I am now starting on the Fuel system. Body is (still) off the chassis, currently building new brake lines and suspension -- so, I thought while waiting for some parts to arrive -- I'd ask about the Fuel System.

I found a pretty cool illustration and added a few questions to it so if you can help, here is the picture:



This was described as a "Best Street/Strip Configuration." Is it Redundant - a Good Idea - or just more money?

http://www.centuryperformance.com/ was the source for the image...


Starting at the Fuel tank.

FUEL FILTER:

I see 100 Microns used as a suggestion at the tank - and finer at the engine. I note the diagram has only a single filter - but seems logical to put a finer close the the carb. The diagram doesn't show that -- but if it makes sense - I'll add one to each line.

FUEL PUMP(s):

My 350/383 won't get to 700 HP - so, since I'm shooting for around 400-450 (with the NOS) I should be ok with maybe 100 - 150 GPH with plenty to spare?
But if running 2 pumps - should the BOTH be that size? Or, maybe smaller - knowing the extra horsepower will be with the NOS only? (This all Stands to reason -- BUT -- I am looking for advice from experienced members here on the forum)!

Seems like the second pump should be engaged only prior to the NOS?
Seems kinda like a good idea - and use the second pump only when using the NOS.
Or should I dump the idea of dual set up?

FUEL LINES:

OK. I have seen and heard the discussion between HARD LINES and BRAIDED LINES along the frame. If I go with the hard - I'll use steel, not aluminum along the frame.

So what about using steel braided from the tank to the filter and filter to the pump? Note the image has 2 pumps and dual lines from the tank.

So, if dual sets per the Illustration - what size fuel line? 3/8 ought to do it (6 AN).

This is what they recommended on the site -- but no discussion when using dual setups:

Use these figures as a fuel line sizing
Up to 250 HP = 5/16" or -04 AN
Up to 375 HP = 3/8" or -06 AN
Up to 700 HP = 1/2" or -08 AN
Up to 1000 HP = 5/8" or -10 AN

And for return (from the regulator)lines they recommended basing these on fuel pump sizing:
Up to 45 GPH = 5/16" or -04 AN
Up to 90 GPH = 3/8" or -06 AN
Up to 250 GPH = 1/2" or -08 AN

Here it would look like dual 1/2 inch lines. Or would 3/8 inch be adequate? Again hard lines along the frame and into the tank?

I've done some more thinking and the 3/8 inch line ought to be enough. Use both for feed and return. Sound about right? added edit...

REGULATOR:

Here is a diagram from HOLLEY:



Would like your thoughts and recommendations here too. Somewhere around 9 psi each - or something else for the NOS Side? I am considering a Wet System, that will be another set of questions downstream.


Or should I dump the idea of dual set up? Seems kinda like a good idea - and use the second pump only when using the NOS.

Currently, the engine has a mechanical pump mounted and steel braided line to the Edelbrok carb on the Torquer intake. Steel return line from the carb - but no regulator. Hense, I am rethinking the whole set up, and gettin ready to order some parts -- 'Start the New Year off Going for Broke!'

I am in the middle of the body-off -- so now is the best time to do all this -- before some other wild idea pops into my head!

RECOMMENDATIONS? HELP! Please.

Thanks Guys, Happy New Year!

Cheers, Jim