I am changing out my 85 TPI 305.... I am replacing
it
with a 383 carberated.... My prob is what to do
about the
fuel delivery system.... I was told that my stock TPI
fuel
pump will be too much psi for the carb even with
my
AFPR.... Then I was told that I could poss go with
a TBI
fuel pump and use the reg with no prob of to much
psi....
How ever the person who told me about this idea
was not
sure if the stock TBI fuel pump would have enough
delivery
for 500hp..... Then my last option is going with a
after
market fuel pump.... But I was told that these
pump were
designed to push fuel not suck.... So then I found
out that
to get the best results from a after market pump I
would
have to have a sump installed in my tank.... any
way that is
my dilemma..... HELP!!!!
My setup is a 383 w/ a Edelbrock RPM Performer
intake
/ 4150-HP carb / Mallory 5 port AFPR and if
needed for
your help I am going to run a 700R-4.... I am est to
get
aprox 500hp out of my setup w AFR 195cc
heads.....
In advance Thank You to any and all for all your
help.....

TDM.....


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THE DEVIL SOLD ME HIS SOUL.....

 

Drop the tank and pull out the stock pump. Then add a Holley Blue inline with the regulator, and set it to 7-9psi.That should be enough to feed it.

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350 4 bolt main, Speed-O-Motive 383 stroker kit, re-sized rods ground for clearance,Hypereutectic pistons,9.8:1 compression,HPC Coated RPM intake, Speed Demon 750 cfm carb,World Products Sportsman II heads,2.02/1.60 valves, K-Motion springs, Comp Cam 1.6 roller rockers, Lunati adv.292/230@.050 with .512 lift,Crane pushrods,Proform HEI and MSD6A box,HPC coated 1 5/8 headers, 2.5" exhaust with 40 series mufflers,TH350 with B&M 3000 stall, Powertrax NoSlip Locker, 4.11 gears.

 

Thanks Polecat.... That seems to be the fav opt... But will I need to put in a sump in a fuel tank.....

TDM

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THE DEVIL SOLD ME HIS SOUL.....

 

Correct me if I am wrong, but you can pull right through a stock intake pump with no problems. Don't even drop the tank. Just splice the blue pump/regulator inline near the tank.


BTW- You will also have to pull that pump relay fuse too...
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1984 z28 w/ a 357 cu in. monster engine which is looking like the posterchild for Edelbrock... all the suspension stuff... 9-bolt posi disk is in... K&N filter... 93 octane...

-=ICON Motorsports=-

[This message has been edited by Biochem (edited October 06, 2000).]

 

What Polecat said, go with a Holly Blue pump

Theoratically you can pull through the stock pump, and some people have made it work, but I for one would feel much better if it was me putting in a proper pickup.

 

I would use the pump you have as it will surely provide more than enough volume for your engine. To make it work, you will need a 3-port fuel pressure regulator (Mallory?) that you can buy at your local speed shop or from the Jeg's/Summit catalg(s). The place you buy it from can/will help you hook it up...


Have fun!!!

 

Thank you all for the info and help I will look into the BLUE pump..... If any one else has any other info feel free to post....
Again guys Thank You.....

TDM

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THE DEVIL SOLD ME HIS SOUL.....