Is there any difference in the fuel pumps from 55-88? Would an early Chevy fuel pump work on a late 70's Small Block Chevy 350? It seems that their are a lot of ugly looking mechanical fuel pumps now to choose from and I wanted something that looked a bit more factory. Cl***ic Chevy has these which state they are for a 55-57 Chevy with out the AC logo on them... http://www.cl***icchevy.com/product.asp?pf_id=29-37&dept_id=1277 Would it be counterproductive as far as fuel pressure or rates go? Or would they be fine for a stock engine type application? Thanks!!! If there's a another route to take perhaps one from NAPA or something that looks like this and is cheaper my ears are open.
Should work. Just make sure that the inlet/outlet are on the correct side for you. I know that there was at least one older model (283 I think) that had inlet toward rear and outlet toward front, because I used to have one. But the geniuses at the nameless parts store have not been able to figure it out. I couldn't wait, so I had to plumb my 37 backwards to make it work. Rather than notching the crossmember, though, I'd go with an electric pump. The CM is notched in my 37 and when I rebuild front suspension this winter, I'm going to swap to an elec. pump and put a full CM back in.
The main diff is the thread size and location of the inlet/outlet ports. The mounting side is all the same. For normal stock engines all will work. As I recall some of the later HP engines had a bit higher flow rate.
From Speedway Motors, Part # 91602046, (new) fuel pump can be dis***embled to index the inlet/outlet area. Plus the rated output PSI is 6. Edelbrock carbs need 6 PSI, while Holley carbs need 7 PSI. I have seen this fuel pump to work correctly with either of these 4 barrel carbs, thus without the need to install a fuel pressure regulator.
Straight 6 chevy sb bb block all will work , Lt1 302 Sb Hi po bb will have more Fuel Volume , some have different size inlet & out lit , not all year Clocked the same . Use a name brand GOOD Quality fuel pump , ones that are sitting on the shelf Autozone Napa etc. diaphragms are dry rotted cheap rubber sitting on shelf to long .
IM AWAKING THIS POST. I HAVE BEEN LOOKING for a SBC mechanical fuel pump & something I have noticed is THE LOOK THE SAME !!?? Like they are being made like compressors which are made by ONE maufacturer and Husky , Ingersoll, craftsman bla bla bla ALL just paint them their color & slap their name on it . BUT are they same .I'm seeing the same with fuel pumps ,Holley/quickfuel & Edelbrock 1721 ( the same ) !?? My 1721 looks way different from the new on Summit . Anybody seeing this ****!?? Thinking of just going electric & F the clocking bs.
READ THE REVIEWS ON SPEEDWAY IT STATES"You can rotate the entire bottom portion but the inlet and outlet position can not be rotated individually. They will always be at the same spacing from each other".
I’ve posted this before, but here it is again for what it’s worth. Carter M2468 is clock-able and has inlet and outlet ports in the body, rather than sticking out from the bottom.
I've got the same pump on one of my dailies. And it pumps out about 6PSI. And when you shut the car off it doesn't hold pressure. Which it's nice so it doesn't flood over.5-6 years.
Hasn’t. Broke in the engine with a different new Carter pump. Fingers crossed on this one. Needed the bottom clearance or I was faced with redoing the crossmember clearance section after moving the engine. So you had good service from and recommend the M6900?
I wanted to see if a good defense could be had for the pump you posted a picture of. I went thru 4 of those. Each time I tried one from a differant manufacture. Each one looked alike just like yours. Even the screws were the same. A fails. Yes the M6900 has been great. Brings fuel to the carb asap, unlike the others before they failed. However, it may be a tricky one for you clearance wise.
A post above says 6, sbc and bbc all the same. I don't think so, correct me if I'm wrong. I have a Holley mechanical from my race days and it's a bbc specific number. Any solid input to keep the info correct?
Gee, that's what I always observed, different arm. Sometimes I need a rake to clear the memory cobwebs. Thanks...
AC fuel pumps for 57 Chevys have the inlet / outlet clocked at 120° apart. Later pumps [eg: 65-66 Impala] have the inlet / outlet clocked at 90° apart. 57's did this for Front engine mounts. Both pumps are more than capable, it would just be a plumbing issue. Here is a 65 Impala pump "trial fitted" on my 57 Engine .The body was rotated "clockwise" for the fuel hard line to clear the front mount [then the inlet had clearance issues with the crossmember] The 57 pump has the inlet where the blue mark is
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