Me and My friend decided after we got the car in running condition , that we try a test drive. Let the car run for a bit to warm up . we put the car in drive and no moment, i put a little pedal on it and the rear tires spin and digs holes in my stone driveway making my rear end bottom out the drive way. The idle is set at 950, and i have a stock rear end and 700r4 trans stock. would cause the wheels to spin, do i need to take it out on the road , is my idle to low or high or will i need a stall converter or something else?

Mike

 

Your idle is way too high. It should idle around 550rpm at the most.

 

alright how do i adjust it on my elderbrock if when i do it it stalls out when i adjust the throttle screw?

 

You really need to adjust the idle after the car has reached operating temperature. Once you are there or at least close you can start adjusting it. I just had the one screw to adjust on mine. It was an Edlebrock 600CFM 1406 as I recall.

 

i have the 500 cfm carb , has the 2 front idle screws when at idle then the main screw on the side which i will adjust and see what it does .

 

sound like the fronts aren't turning???

 

front are turning fine rotors calipers and pads , i thought the same thing at 1st , its probally idle .

 

Hmm. Im with Grumby. I would try to ease it onto pavement. Throttle tip-in is hard to judge on gravel. But if you cant get it to roll on the gravel without spinning the rear tires, you probably have locked front brakes. Did you replace the brake hoses? Lift the front end and try spinning the wheels. Do they spin freely?

 

didnt replace the lines bled out all 4 wheels, and the fronts spin freely, about a full turn after i let go of the wheel by hand.

Mike

 

out of curiosity what is the stock stall on the 700r4 transmission ?

 

When is your stall kicking? You might have a high stall in the car causing it to kick in at higher rpm and spin the tires.

 

its a stock stall what ever that is, my rpms are reading 1750 in park, i know thats not right i did everything i could do and my friend that drag races to turn it down without stalling it out, my rpm gauge could be out, since is stock in the instrument cluster. i did some more reading and i belive stock is 1700-2000 stall on the 700r4.

 

stall doesn't matter unless its a real bad sloppy TC, I got a 2200 stall in my V8 car and can creep at any low speed like a stock stall, you only notice it when you hammer it and flash it, which is fun, I rarley ever open up the carb all the way anymore, flashing the TC to stall speed is fun fun fun.

Now I want a 25-2800

 

Your information on stall speed is good. Stock stall is about 1800. Varies according to the internal condition of the converter. Hard use can cause them to loosen as fins are damaged from excessive pressure. Your problem is puzzling. Youre running a 283. Kinda cool really. You could be having throttle tip-in issues. 1700 idle is very high. Sounds like youre having trouble getting it to idle. Is it hesitating? The sudden acceleration that accompanies hesitation could explain the tire spin. Gotta get it off the gravel. Can you push it? Dialing in carb and timing is probably your answer. I assume the motor's healthy, good compression, no vacuum leaks.

 

yes it will hesitate , throttle tip in issues, what exactly is that? yes i can push the car out to the road , and see where i stand. motor complete rebuild, 11-1 compression, vacuums going to the vacuum advance and the brake booster. Im running the 110 grade gas.

 

Throttle tip in refers to the transition from idle to part throttle. During transition, the idle circuit continues to provide fuel through the transition slots as velocity develops at the venturies. The accelerator pump also provides additional fuel during this period.

A hesitation at off idle is generally caused by insufficient fueling in the transition stage and/or insufficient timing lead. You can richen idle mixture slightly to increase fuel flow through the transition slots, this and adjusting accelerator pump is generally how I deal with tip in hesitation.

With 11:1 compression I assume youre running a large cam. Be sure to give it plenty of ignition lead. I would start at 12 base and work my way up til take off smooths out.

 

i am running a performer series carb 500cfm based on my cam and compression i only need 475 cfm so a 500 is a little rich, im going to have my friend run a timing gun on it tomorrow to see if that helps adjusting the timing.

 

Did you ever figure out the issue with your car? Let us know what you find out so that others can benefit from your experience.

 

The tach is bad, and i got the car lowered to 36-28 degrees in time(it was way i n advance), its stone worthy now. Just have to buy a new aftermarket tach and a intake thermostat switch sensor, my 25 amp sensor doesnt hold up to a dual fan (the brass intake sensor that is).

 

I use relays to control high load items like fans. That way you dont burn up switches or sensors. Plus, with a relay system you generally end up with less wire length between power source and load making the system more efficient and less likely to fail.

 

i have dual relay setup with 30 fault switches , i was going to use the old brass intake sensor but its not high enough amperage and it burnt out, so have to get a new one that handles 40 amps, or just run a switch to the inside of the car that runs all the time but im not a fan of those.

 

Okay, now im confused. The purpose of a relay is to control high load(high current) items using low current switches. The switch simply activates the relay which with most relays takes about 1 amp. The relay can be any size you choose(ive seen relays up to 100 amps). This way you can operate your 30 amp cooling fans with a 1 amp thermal fan switch. If you think you need a 40 amp thermal switch, youre not connecting your relays and fans correctly.

Never go with a toggle switch for cooling fans. For one thing fan motors are not intended for constant duty. For another thing people forget to turn them on when the engine temp goes up. Thats why we have thermal switches.

 

this will make my shopping a little easier ty much

 

yeah my fans run alll the time but thats because i hate them and await them to quit so i have a good excuse to replace them=]

 

As long as they dont quit you on a hot day far from home.