not enough power

broncoron · February 24, 2009, 12:18:11 AM

i just rebuilt a 410 modified ford motor and put a 600 holley on it but there seems to be no power when i mash the throttle. Its ok power, but it wont spin the tires, the thing is that it did when it had the stock 2bbl on it and thats what i dont get i think the vac. secondaries arent opening, but any help would be appreciated.

Ranger Dave · February 24, 2009, 12:27:55 AM

how big are your tires and what gears are in the axles.

and im not trying to be a smart ass but is it a 351 M or a 400.

they are differnt.

broncoron · February 24, 2009, 12:33:58 AM

there 31's with 355 gears and yes its a 400 but board out

Ranger Dave · February 24, 2009, 12:37:47 AM

what kind of carb, manual seconts or vacum. is it hitting on all 8. or missing

broncoron · February 24, 2009, 12:47:11 AM

its a holley 80457-s they are vacuum secs. it runs great starting out, cruisin around and everything else but i know it should have more power than it does.

Ranger Dave · February 24, 2009, 12:50:33 AM

all most sounds like a power valve in carb. hase it ever back fired on ya. that will take a power valve out. if you push the gas down real slow everything seams fine. if you floor it it like nothing or big pause

broncoron · February 24, 2009, 01:09:55 AM

its never really ever backfired at all, when i floor it goes just fine but i know it should leave alot harder than it does it should light em up. its really frustrating ya know.

blasterguy911 · February 24, 2009, 01:13:32 AM

what kind of igniton you have ares was like that and a stuter does yours

Ranger Dave · February 24, 2009, 01:18:15 AM

i guess ill have to see ya at a bog to tell. teh 400 didn't run like the 351M

and it mite just hook and go. no smoke show

broncoron · February 24, 2009, 01:22:18 AM

its a mallory dist. new plugs and wires

broncoron · February 24, 2009, 01:23:41 AM

will ranger dave be at the Easter bog on the 11

Crazymays77 · February 24, 2009, 01:25:12 AM

Quote from: broncoron on February 24, 2009, 01:23:41 AM
will ranger dave be at the Easter bog on the 11

more than likely

Ranger Dave · February 24, 2009, 01:30:05 AM

i hope to be.

ill bring a carb with me to put on and give it a try.

Kodiak450r · February 24, 2009, 01:32:13 AM

need a bigger carb. 410 cubes needs at least a 650 and thats being conservative. WOT runs requires more air and fuel then a 600 can provide

chetney · February 24, 2009, 01:40:56 AM

RD took the holly off and put a eldbrock on and it was night and day on my last bronco

PathWayMan · February 24, 2009, 01:43:41 AM

sounds like u need more carb

Ranger Dave · February 25, 2009, 03:19:06 AM

is it in low lock or hi lock.

Disturban · February 25, 2009, 03:50:32 AM

Put a 650 double pumper on it!

carbogger · February 25, 2009, 06:03:50 AM

Have somone press the throttle pedal down while you check to see if the carb is opening all the way.
I know it sounds kinda dumb but It happened to me once when I pulled the 318 out of my bogger
and put in a 440 and the cable slipped and when I took it for a test drive I could not believe the 440
had less power than the 318 untill I found that I was only getting half throttle.

haybob · February 25, 2009, 09:11:37 PM

Quote from: carbogger on February 25, 2009, 06:03:50 AM
Have somone press the throttle pedal down while you check to see if the carb is opening all the way.
I know it sounds kinda dumb but It happened to me once when I pulled the 318 out of my bogger
and put in a 440 and the cable slipped and when I took it for a test drive I could not believe the 440
had less power than the 318 untill I found that I was only getting half throttle.

second that had a small fire

and melted my acc. pump on my edlebrock only got 5/8 throttle changed pump wfo again

not enough power

chetney