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Username Post: Upgrading fuel line - still use 5/16" on inside frame?        (Topic#361844)
Russ 
Senior Member
Posts: 2157
Russ
Loc: Sacramento, CA USA
Reg: 12-16-99
07-21-20 07:09 PM - Post#2799193    

I have a stock stock fuel line for the 283, 2 barrel setup with Powerglide. The fuel line is on the inside.

I'm going to upgrade to a new V8 (327 or 350) with a four barrel.

When replacing the fuel line, do I stick with the same 5/16" on the inside? Does the stock 5/16" for the original 283, 4 barrel Power Pack also go on the inside of the frame?

I hope to pick it up in person next week when I'm at The Car Shop, Danchuk or Classic Industries.

TCS shows 55-10114 for the 55-57 V8 2 BBL, 5/16" except convertible. They also show 55-10116 for the 55-57 V8 4 BBL, PWR PK.

Which one should I get? Does the V8 four BBL use the same routing on the 2 BBL?

Thanks
Russ (lost outside of the 59 Impala world)



 


YOUNG57 
Frequent Contributor
Posts: 1231

Loc: Tennessee
Reg: 12-06-10
07-23-20 11:27 AM - Post#2799317    
    In response to Russ

Tri-fives with I-6 or V8 with two-barrel had single exhaust on the left side and used 5/16” fuel line with the brake line on the inside of the right frame rail.

Tri-five V8s with single-four barrel (Power Pack) had dual exhaust so they moved the 5/16” fuel line with the brake line to the outside of the right frame rail to avoid the heat of the second exhaust pipe.

Tri-fives with two four-barrels (dual quads) and the ‘57 with 283 fuel injection used 3/8” fuel line with the brake line also on the outside of the right frame rail to avoid the heat of the second exhaust pipe.

Of course, the 3/8” fuel line requires a 3/8” fuel sending unit in the gas tank and a bigger capacity fuel pump. But most modern fuel pumps can handle the increased fuel requirements.

Subsequent year’s larger engines with larger carbs, especially Quadrajets, used 3/8” fuel lines.

The right frame rail already has holes on both in and out-side for fuel and brake line clips.




 
Russ 
Senior Member
Posts: 2157
Russ
Loc: Sacramento, CA USA
Reg: 12-16-99
07-23-20 02:26 PM - Post#2799333    
    In response to YOUNG57

Thanks. That makes sense. So the issue of single or dual exhaust is the deciding factor. Right now, he's running the original 5/16" but somewhere along the line added a dual exhaust flow masters. I suppose to be safe and assuming he keeps the dual exhaust setup, we'd better reroute to the outside of the frame. Does the brake line also get rerouted to match the routing of the fuel line?

Thanks
Russ



Edited by Russ on 07-23-20 02:27 PM. Reason for edit: No reason given.

 
Rick_L 
Member #409
Posts: 27736
Rick_L
Loc: Katy, Tx, USA
Reg: 07-06-00
07-23-20 06:04 PM - Post#2799349    
    In response to Russ

Yes. It's all documented in the assembly manual.



 
Jalapeno 
Member #252
Posts: 9859
Jalapeno
Loc: The Republic of Texas
Reg: 04-30-00
07-24-20 05:32 AM - Post#2799380    
    In response to Russ

You will also need the frame bracket for the brake line, see View B. It is a reproduced part and the frame already has the holes.

https://www.trifive.com/d1/garage/57%20Chevy% 20Ass...

Jalapeno


Edited by Jalapeno on 07-24-20 05:33 AM. Reason for edit: No reason given.

 
YOUNG57 
Frequent Contributor
Posts: 1231

Loc: Tennessee
Reg: 12-06-10
07-24-20 07:48 AM - Post#2799403    
    In response to Jalapeno

In Views A & C, I re-bent my fuel line to keep it on top of the frame away from exhaust heat. I drilled a new hole next my re-bent line to re-locate the clip and screw.



 
Russ 
Senior Member
Posts: 2157
Russ
Loc: Sacramento, CA USA
Reg: 12-16-99
07-24-20 09:59 AM - Post#2799416    
    In response to YOUNG57

Thanks. I ordered the dual exhaust brake and fuel lines. I'll have to order the bracket that Jalapeno pointed out.

thanks




 


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