Glenn83 19 Report post Posted March 23, 2014 Just curious to hear what fuel lines and fuel pumps guys are using on there 351w stroker combos or big blocks. I'm hoping my 408 will make at least 550hp on the engine dyno, just trying to figure out if a good quality (Holly,edelbrock)mech fuel pump and 3/8 tank to pump fuel line will cut it?? Quote Share this post Link to post Share on other sites
69boss408 11 Report post Posted March 23, 2014 Im running the Rob MC 1\2 fuel pick up and #8 to 1\2 aluminum holley blue pump my 408 dynoed 540hp Quote Share this post Link to post Share on other sites
chillininnh 21 Report post Posted March 23, 2014 (edited) Before I switched to EFI I ran my 500hp 418w with a a mechanical Edelbrock fuel pump (good for 600hp) and the 3/8" fuel line with no issues. I still have the pump if you need one. Edited March 24, 2014 by chillininnh Quote Share this post Link to post Share on other sites
Glenn83 19 Report post Posted March 23, 2014 Im running the Rob MC 1\2 fuel pick up and #8 to 1\2 aluminum holley blue pump my 408 dynoed 540hp Could this setup be used with a mechanical pump and no return line?? Quote Share this post Link to post Share on other sites
Glenn83 19 Report post Posted March 23, 2014 Before I switched to EFI I ran a mechanical Edelbrock fuel pump (good for 600hp) and the 3/8" fuel line with no issues. I still have the pump if you need one. Thanks that a relief to hear, thanks again Quote Share this post Link to post Share on other sites
BuckeyeDemon 211 Report post Posted March 23, 2014 do you plan on drag racing or road racing? those situations might present a larger obstacle versus if you were only going to be on the street (unless you plan to really break the law....). Quote Share this post Link to post Share on other sites
sportsroof69 13 Report post Posted March 23, 2014 I wouldn't attempt to run 550hp on 3/8 fuel line. I use a stock tank with a sump, and -8 line from the tank to the regulator, then a -6 into each carburetor bowl. This is the pump I'm using, and I run it deadhead. http://m.summitracing.com/parts/aei-11203 Quote Share this post Link to post Share on other sites
Glenn83 19 Report post Posted March 23, 2014 Thanks for the replies, it will only be used on the street. Quote Share this post Link to post Share on other sites
maxum96 32 Report post Posted March 24, 2014 I wouldn't attempt to run 550hp on 3/8 fuel line. Ditto I run a 1/2" fuel line from a fuel cell to the carb. I use a mixture of aluminum tubing and -8 braided steel lines. I run a Holley electric pump at the fuel cell and have a pressure regulator in the engine compartment. My engine is in the area of 550hp-600hp. Quote Share this post Link to post Share on other sites
Glenn83 19 Report post Posted March 24, 2014 Maxum, are you using a 1/2 inch pick up at the tank?? Quote Share this post Link to post Share on other sites
69gmachine 15 Report post Posted March 24, 2014 I suppose if you never intend to use all the potential power you have with a 500 plus HP 408, then sure you can get by just fine with a 3/8 fuel line, but then why the heck did you build that motor? I also use the Rob MC fuel pickup with 1/2" aluminum line from the tank to the puel pump, but then transition down to 3/8 line from the pump to the carb. I don't drag race, but I did run out of power (as compared to a pair of Roush 427 supercharged Mustangs) while climbing a large hill (or small mountain). They rode behind me for a while then decided they didn't want to go that slow (around 70 mph) and just motored right past like I was sittin' still. At that incline when I pressed harder on the gas, I didn't get a noticeable response and had to let them go. I never thought that I would ever encounter a situation on the highway where my engine didn't have enough grunt to keep up with anyone while going the speed limit (70)! Quote Share this post Link to post Share on other sites
Glenn83 19 Report post Posted March 24, 2014 I still intend to use the power, in australia we have lots of very long country roads :)). But being seroius i might drag it once or twice a year but mainly just a street car that i would take out for drive on the weekends ect.. Quote Share this post Link to post Share on other sites
1969vert 55 Report post Posted March 24, 2014 Dual 1/2 sumped 1970 tank here Two 1/2" lines Two Blue Pumps with Regulators...One for motor and the other for NOS...Plenty of flow for my 427W ...Drag and street... Quote Share this post Link to post Share on other sites
Rip Rock 13 Report post Posted March 24, 2014 (edited) 2 Bosch 044's in tank , drop in from the top , with 2 -10 lines in and 1 -6 return. 1970 tank sumped kind of. I know I don't have a 408", but I don't like to under size my fuel system by any means. Edited March 24, 2014 by Rip Rock Quote Share this post Link to post Share on other sites
DarkBuddha 107 Report post Posted March 25, 2014 Interesting topic... I'm installing a much milder 408w and figured the 3/8 line and a good 80gph 7.5psi Holley pump would be adequate, but now you guys have me paranoid. I guess I'll do some AFR data logging and see if I encounter any fuel starvation issues. Quote Share this post Link to post Share on other sites
Glenn83 19 Report post Posted March 25, 2014 Thanks for the replies everyone been very helpful Quote Share this post Link to post Share on other sites
Glenn83 19 Report post Posted March 25, 2014 Thanks for the replies everyone been very helpful Quote Share this post Link to post Share on other sites
maxum96 32 Report post Posted March 26, 2014 Maxum, are you using a 1/2 inch pick up at the tank?? Yes. It's an aftermarket racing fuel cell. Quote Share this post Link to post Share on other sites
