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  #16 (permalink)  
Old 08-01-2010, 09:32 PM
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it idles raly smooth at 800 rpms and drops down to 500 in gear and idles smooth it has a stock stall converter wen it is in gear it feels like it pulls a lil so i drop the idle to 700 and it drops down to 400 in gear feels better butt what should the idle be in gear

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  #17 (permalink)  
Old 08-01-2010, 10:03 PM
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Quote:
Originally Posted by sickolds
the people from summit said that i did not need a stall converter

The tech support at Summit is, shall we say...less than stellar? If your converter is tight it's gonna wanna pull at idle. Install a 2500 RPM converter in there and it will feel much better.
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Old 08-01-2010, 10:15 PM
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ihave one but i think is to high 2500-3000 im not shure
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Old 08-01-2010, 10:17 PM
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what will happen if i keep on running like these
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  #20 (permalink)  
Old 08-02-2010, 06:25 AM
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Quote:
Originally Posted by sickolds
what will happen if i keep on running like these
It will continue to frustrate you because you know it's not right,
F-Bird is right on, but you sound like you don't want to get that involved. If your concern is that you're not sure what it's gonna take to get it right, trust that more initial timing is a big step in the right direction, doing the whole advance curve is the RIGHT way to do it, and it may take a little looser converter to make you totally happy with your overall combo, no matter what Summit Racing said.
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Old 08-02-2010, 09:16 AM
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Quote:
Originally Posted by sickolds
it runs very good with 14 i just want to know about the idle
You are getting all the correct advice here, I had/have the same issue with my 383 with a 221 duration cam @ 50 and a 1800 stock type stall convertor and started with about 14 deg BTDC initial timing, every time I would drop into gear my idle would drop 300-400 rpm and my vacuum would fall off to about 9 "hg and I would stand on the brakes to keep the horse in the barn at a light, crappy idle too. Moved my initial up to 18-19 and recurved my HEI to get 35 total and then another 12 with vac advance just as Fbird is saying. The motor idles now in gear at 750 and 950 in park, pulls 12 "hg vac in gear, idles clean etc. Still rides the convertor at a light as it is too tight for my cam and yours is even more duration. I can't swap my convertor right now either but I am going up to a 2600-2800 stall as soon as I can, You should check your vacuum at 400 rpm in gear, must be next to nothing this will not support a clean burn and effective carb operation etc, you should be about 700-800 rpm at idle in gear IMHO, remind me never to call summit tech help.
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  #22 (permalink)  
Old 08-02-2010, 09:32 AM
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ok well now that you guys explained it to me now i kinda understand (kinda )
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Old 08-03-2010, 07:26 PM
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I guess I'm still a bit confused. Are you asking IF it is suppose to idle down to 400-500 RPM in gear? Or will it hurt anything if it wants to pull at idle in gear?

No amount of timing changes is going to make a difference in the way the trans pulls in gear at auto. A higher stall speed converter will lessen the pull, but it will still pull some at idle in gear.
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Old 08-03-2010, 10:03 PM
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More torque will actually raise the stall speed a little bit,
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  #25 (permalink)  
Old 08-04-2010, 05:00 PM
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Quote:
Originally Posted by sickolds
the people from summit said that i did not need a stall converter
I agree.

If you have the capability of idling down to 400 RPM, then you can set the idle anywhere you like, 400 and up. There is no set idle speed requirements. Each car/engine/drivetrain will be different if different parts are used.

Drive that thing and have fun.
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  #26 (permalink)  
Old 08-04-2010, 05:22 PM
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My T-bucket idles at 800 in neutral and drops to 650 in drive . And yes it pulls with a 2200 rpm stall converter . It won't hurt a thing . The only thing you might notice is a little increase in trans and eventually eng temp if idling in gear for an extended period of time . If it idles good at 400 rpm and you still have good oil pressure idling that slow . Good for you . Not everyones engine will idle good at that low of an rpm . RUN IT !
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Old 08-04-2010, 06:00 PM
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You could fit a manual transmission and avoid all these problems...

I would have done that, but if it creeps at idle then you just live with it. I don't think anything will wear unduly and it's just one of the penalties one pays for sticking to a slushbox.

Like the previous advice said, drive it and enjoy it.
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