Well, before I get the 3rd degree...let me start by saying I just installed a Holley 130gph fuel pump on my daily driver. I know it's too much pump for a daily car pushing roughly 420hp. Only reason I bought it was because I got it for roughly $35 with the regulator. I couldn't pass up a deal like that...so I got it.
Ok now let me get to my problems....I'm believing the sluggishness, bogs/backfires are because I don't have the fuel regulator on yet. I've adjusted my valves, cleaned out those little bronze filters in the carb, and left my timing at 15* initial. Also, I have no idea if it's connected, I've been running hotter then usual. I know it's been kinda hot over here in LA, roughly 90-95*...but, I've known my motor to run at around 200-210* in this weather....and lately its been right between 210-220*. That's pretty much what my motor is doing right now. What do you guys think? Suggestions? Tips? What should I look for? What should I tune? Or should I just install the regulator and let you guys know how it is? One of the reasons I haven't installed it yet is because I can't seem to figure out where to mount it. I'm torn between running hard line and running steel braid. I know, to a lot of you, you go bye, "If you're gonna do it, do it right" and the plan is to use steel braid, but my funds have pretty much all but run out...and I gotta save what's left. Any suggestions as to where the best possible location to mount it? TIA eveyone graemlins/beers.gif graemlins/hurray.gif

Sounds like a timing problem to me, not a fuel problem. Do you have your vacuum advance hooked up? If so, I would recheck that timing.

Please get rid of those bronze filters! They restrict fuel flow and plug easily. Install a simple in line filter from any auto parts store. Check float levels, make sure when throttle linkage is opened gas is squirting in carb, and yes check timing due to the backfiring. Goodluck! graemlins/thumbsup.gif

Originally posted by blazerbob:
Please get rid of those bronze filters! They restrict fuel flow and plug easily. Install a simple in line filter from any auto parts store. Check float levels, make sure when throttle linkage is opened gas is squirting in carb, and yes check timing due to the backfiring. Goodluck! graemlins/thumbsup.gif I thought about getting rid of the bronze filters, but according to Dave Emanuel and I believe David Vizard also, they recommend not getting rid of the broze filters because it's a myth about hampering performance. And the only time it would be ideal to remove them is when you're dealing with an all-out race car. But, hey, I guess I've got nothing to loose right? I've got an inline fuel filter, and was wondering maybe if that was restricting my fuel flow. Regardless, I'm planning on installing some 3/8" line and using a better fuel filter...the one I have is from Spectrel.
I'm hoping my buddy drops by today, I loaned him my timing gun, then I can recheck it and see where its at. Thanks for the quick responses...and please, if there are any other thoughts and/or ideas, please let me know...much appreciated graemlins/thumbsup.gif

Just about every aftermarket pump, mechanical or electric will overwhelm the needle and seat assembly, flooding the carb. So you need to get that regulator into the system pdq.

Could it be running lean? That may account for the higher than normal temps and poor performance, Just a thought.

Originally posted by smittyocat:
Could it be running lean? That may account for the higher than normal temps and poor performance, Just a thought. You know what, I have no idea if its running lean. The carb is a Holley 750VS, and I have no idea what jets it has, nor which power valve it has. I'm assuming it has either a 6.5 or 8.5 power valve. I did buy a carb rebuilding kit, but I haven't done it yet because I want to do everything else to determine what exactly my problem is...I just don't wanna tear the carb apart if it didn't need it...or tear it apart and make things worse. I had the carb rebuilt about 4-5 years ago...but I have no idea what the guy did to it. :confused: graemlins/clonk.gif

What cam are you running? Carb?

Sounds like both fuel and timing to me. Bog is probably from not enough initial timing, while the backfire could be from lack of fuel on the power/accelerator circuit.

Originally posted by Silver69Camaro:
What cam are you running? Carb?

Sounds like both fuel and timing to me. Bog is probably from not enough initial timing, while the backfire could be from lack of fuel on the power/accelerator circuit. Cam is a no name brand with a .488"I/E lift. I lost the spec sheet on it, and don't know what the rest is. Carb is a Holley 750VS 3310-6.
The thing about all this is, I really didn't have this problem 2-3weeks ago. I've pretty been battling the bog from take off for a looooooooong time, but other then that, the motor wasn't backfiring, popping, or running hot. That's why I'm wondering and leaning towards questioning the fuel pump, and the fact that I don't have the regulator on yet. I know as was suggested above...get the regulator on...I'm thinking of "mickey mousing" it, the lines, just to see how it comes out. Then if it solves the problem, I'll do the lines right. If it doesn't solve the problem, then I'm guessing that I'll have to bolt the 307ci fuel pump back on and see if it changes.

Did you check the accelerator pump shot it may not be strong enough and causing a bog. I would start with timing eliminate that first, then go to fuel pressure and carb. Just a thought

Originally posted by smittyocat:
Did you check the accelerator pump shot it may not be strong enough and causing a bog. I would start with timing eliminate that first, then go to fuel pressure and carb. Just a thought I haven't touched the carb. I'm kinda leaving that towards the end. As it is, I can close the fuel/Air needles shut, and the motor idles like nothing....what's up with that?

Vacuum leak maybe? could be causing lean condition also check carb for tightness and vacuum ports plugged off? does it have power brakes, if so check booster for leak Just some thoughts

Alex, just install the regulator temporarily and see if it solves the problem. If it does, then you know what was going on. After that you just gotta stop being lazy and install it the right way, lol. :D

Originally posted by smittyocat:
Vacuum leak maybe? could be causing lean condition also check carb for tightness and vacuum ports plugged off? does it have power brakes, if so check booster for leak Just some thoughts Actually I did notice/hear a loud whistling while on the freeway. I used to constantly have this before, but it went away when I changed the rubber bushing on the power booster. I yanked off a car from the wrecking, and it seemed and looked quit new. I guess I'll have to check it out again.

Also make sure you don't have any plug wires crossed. You should notice it at idle but it can't hurt to double check 1-8-4-3-6-5-7-2!

Troy.

Well I finally installed the regulator. I used 3/8" rubber fuel line for the mean time, just to hurry up and solve my problems. I set the pressure at 7 1/2psi and drove it around the block a few times. It seems/feels as if most of the bog, if not all, has gone away. But I don't know if driving up hill instead of down or flat would affect a motor from bogging. Anyway, I did notice it backfire when I held it in 1st gear while going down hill just before I made a left turn to go home. I'd let it coast then gun it, and it'd backfire, nothing big or loud, but I heard it. I'm gonna mess with the timing tomorrow if I have a chance...maybe that'll be the last thing for me to fix.....hopefully graemlins/clonk.gif :D