Fuel pump fittage

[JimW]

Will a stock SBC mechanical fuel pump fit into the chassis without modifications? If modifications are required, then how extensive?

[cjbiagi]

I think it will hit the frame which is why the factory went with a electric pump. Not sure how much modification would be necessary.

[marco_1978_spyder]

I had a 76 with a regular mechanical pump, the previous owner made a notch in the pass. side v8 frame plate for it to fit.

[monzajer]

From Bob Gumms site V8Monza.com:

http://www.v8monza.com/images/tech/monz ... s-Gumm.gif

hope this answers your question.

cheers, jer

[JimW]

Thanks. I don't believe this will work, but has anyone tried using the stock 4 cylinder in tank pump for a V8? I see in the service manual that it makes 3.5 to 4 psi of pressure, which I believe is not enough.
Also, any recommendations for electric fuel pumps?

[cjbiagi]

What size engine and power do you plan on? For a basic street engine the stock V8 pump has served me well. I have a 355 with a L-79 cam, Hooker 2135's and Carter 4 barrell AFB.

[NVEGAR8D]

Hi,
i had a stock 4 cyl. feul pump trying to feed a two barrel 350, and it had a hard time keeping up to the demand.
nick75vega

[Rickracer]

I'd recommend replacing the stock pump with a TBI pump, and use a Holley 12-803BP return style regulator. This will give all the pressure and flow you could use with a normally aspirated motor, and pretty much completely eliminate the possibility of vapor lock.

[JimW]

Clyde,
When you say the stock V8 pump has worked, is that the stock H-body pump? Is that pump in the tank? If yes, then where can I get one or what year/model can i look one up for?
I would really like to keep the in tank setup, BUT, only if it works.

Rick,
A TBI pump? A TBI pump is an in tank pump, correct? Are there any that will work with a stock tank? If it isn't in the tank, then I would greatly appreciate some more details.

I'm still open to all suggestions.

Engine 327 .0030 over
6.25 Crower rods
KB pistons
balanced and blueprinted
1.6 roller rockers Comp Cam
mild cam .500 109 LSA
1.94 heads, stock 68 CC, ported and polished with 'Z28' springs
compression just under 11:1
650 DP Holley and Holley intake
Sanderson headers

Expect to be used as a street cruiser and tire burner, but hopefully will get to the track at least a couple of times a year

[Rickracer]

Yes, just remove the tank sender, remove the stock pump, connect the TBI pump, re-install the sender, plumb a return line from your F/P regulator, and it will work, as a system, better than any mechanical pump.