Fuel pump manual or electric?
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Joined: Sep 2006
Posts: 67
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From: Wiltshire
Fuel pump manual or electric?
Hi,
I have just purchased this 1972 Sb LT1 motor to go in my 1977,
with the following spec:
Big journal Crank
Ported Heads with standard valves
268 comp cam with hydralic lifters
roller valve gear
Torker II inlet manifold
Holly 750cfm carb vacuum secondary
4 branch s/s headers
Mallory duel point disrtibuter
with 9.35:1 compression ratio.
Will a mechanical(manual lol) fuel pump supply enough gas to run this motor?
Or should I get an electric one?
If I need to buy an electric one can you let me know which one to buy.
Many thanks Jerry
I have just purchased this 1972 Sb LT1 motor to go in my 1977,
with the following spec:
Big journal Crank
Ported Heads with standard valves
268 comp cam with hydralic lifters
roller valve gear
Torker II inlet manifold
Holly 750cfm carb vacuum secondary
4 branch s/s headers
Mallory duel point disrtibuter
with 9.35:1 compression ratio.
Will a mechanical(manual lol) fuel pump supply enough gas to run this motor?
Or should I get an electric one?
If I need to buy an electric one can you let me know which one to buy.
Many thanks Jerry
Last edited by UK Jerry; Oct 5, 2006 at 04:16 PM.
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by Gordonm
I ran the stock LT1 pump
Which is recommended?
Thank you.
Last edited by Bob Onit; Oct 5, 2006 at 08:31 AM.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Originally Posted by Bob Onit
Gordonm, is the stock pump the larger (Deeper) style as oppsed to the short pump?
Which is recommended?
Thank you.
Which is recommended?
Thank you.
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by Gordonm
That is eaxactly what my LT1 pump looked like.
I have the deep style on my 1973 L-48
I wonder what the difference is other than it seems one holds more fuel
Thanks!
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Originally Posted by Bob Onit
I have the deep style on my 1973 L-48
I wonder what the difference is other than it seems one holds more fuel
Thanks!
I wonder what the difference is other than it seems one holds more fuel
Thanks!
Bubba and his friends frequently downgrade their cars by installing a two port pump 'cause they look nice and shiny in the Summit catalog.
Safety Car
Joined: Dec 2004
Posts: 4,071
Likes: 0
From: San Diego CA
Mechanical > electric as far fuel pumps IN MY OPINION
If you manage to be a dork and let the tank run dry, your mechanical fuel pump isn't gonna overheat and die on you. Electric though...
If you want a SWEET fuel pump that you know WILL provide enough fuel. www.racepumps.com Piston pump baby!
If you manage to be a dork and let the tank run dry, your mechanical fuel pump isn't gonna overheat and die on you. Electric though...
If you want a SWEET fuel pump that you know WILL provide enough fuel. www.racepumps.com Piston pump baby!
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by Mike Ward
Your '73 is a three port pump, the other one is a two port. The third port is the 'bypass' or 'return line' which helps mimimise vapour lock by constantly circulating fuel.
Bubba and his friends frequently downgrade their cars by installing a two port pump 'cause they look nice and shiny in the Summit catalog.
Bubba and his friends frequently downgrade their cars by installing a two port pump 'cause they look nice and shiny in the Summit catalog.
Thread Starter
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Joined: Sep 2006
Posts: 67
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From: Wiltshire
Thanks guys.
My current fuel pump off my 77 is the 3 port pump, with many rust holes in the bottom.
I guess the 3 port pump will still work fine in a LT1 motor
Do you know where I can buy a replacement?
My current fuel pump off my 77 is the 3 port pump, with many rust holes in the bottom.
I guess the 3 port pump will still work fine in a LT1 motor
Do you know where I can buy a replacement?
