73 blazer help

[PaleBlue90]

so i had to replace the distributer in my k5; i got it back in with cyl 1 on top dead, the wire on the distributer for #1 is pointed at cyl 1. it just cranks and cranks but only back fires out of the tail pipes and outta the carb. heres the how my distributer looks like

http://www.joby.se/corvette/misc/firing_order.gif

the specs are
73 k5
350 sb with HEI

thanks

 

[mentalbreakdown00]

either restab the distrib 180 or run the plug wires 180 out you have it on tdc exhaust more than likely

 

[mhughes165]

either restab the distrib 180 or run the plug wires 180 out you have it on tdc exhaust more than likely

yup, what he said, sounds like ur 180 out, simplest way to find out is rotating ur wires 180 like has been said

 

[PaleBlue90]

yup, what he said, sounds like ur 180 out, simplest way to find out is rotating ur wires 180 like has been said

thanks ill give it a whirl tomorrow mornin. ill post up and see were im at

 

[88BII got it for $250]

yeah lol rotate the crank pully till it comes back up to tdc and reset the dist. sounds 180 out.

 

[PaleBlue90]

yeah lol rotate the crank pully till it comes back up to tdc and reset the dist. sounds 180 out.

thats da plan

 

[PaleBlue90]

did the 180 turn now all it does is crank, no backfire through the carb; nor through each tail pipe. it also does not fire. hmmm what to do?

 

[alaskan155]

is it on an electric fuel pump, may be fluded, did that the first time i was trying to crank my 289, shut the electric fuel pump off, and it fired right up, and also i use a black marker on for the #1 post on the body of the distributor to help line it up with the cap off

 

[PaleBlue90]

got her runnin, i had the ignition wire in the wrong slot lol

 

[mentalbreakdown00]

ahh you mean you had the + wire on the stud for the tach or the other one on the hei

 

[PaleBlue90]

yea. i got a new problem. it runs and idles fine. as soon as a get on it a little it backfires off the carb. the trucks timeing is dead on. im thinking its the air fuel mixture

 

[PaleBlue90]

anyone?

 

[2manyfords]

Very possible, likely running lean. Check and see if the carb is squirting gas when you open the throttle.

 

[mentalbreakdown00]

my .02 if you set timing with a light it's not dead on, vacuum gauge is the only way to do it.

 

[rusty ol ranger]

People have used timing lights for years to get timing where it needs to be. Nothing wrong with it.

Backfireing through the carb? Probely the other not getting enough fuel when the other 2 barrels open...im assuming its a quadrajunk carb?

If it were me id throw the quadrajunk away and get an edelbrock.

later,
dustin