quote:

Originally posted by Novacaine:
Im thinking around 5800,

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Originally posted by RacerVX54:

quote:

Originally posted by Novacaine:
Its a brand new Ultimate convertor in mooresville nc, The rpm I think was around 6900.I run the 1/8 mile down here.

Whats the stall

quote:

Originally posted by Novacaine:
I was just thinking it would run 5.60"s thats all. I was close when its cooler and not when its 80 degrees

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Originally posted by SLICKSTER:
Ed on here has had a 522 in a car maybe a little heavier and I think it went some 5.60s but maybee he will see this post.

quote:

Originally posted by Mike Rietow:

quote:

Originally posted by Novacaine:
I was just thinking it would run 5.60"s thats all. I was close when its cooler and not when its 80 degrees

The converter was belt for a 496 , 5800 stall. I ended up putting in the 555 and tried it. I have the shift light set at 7000 and it dont come on at the traps.



Converter if spragless should go 6300-6400 on T Brake no high chip on a combo like this. It'll then drop back to 6200 on shift, & slip 6-7-8% at stripe. It'll 60 better this way because it'll multiply more torque below stall. It'll jump out of it's skin better at the hit with a little more stall & the engine will accelerate better throughout the entirety of the run, converter slipping a hair more. Be more consistent from cool to warm conditions too. It's definitely 400 rpms too tight now according to the slip math, and observed 5800 stall.

Tell em you need it 300 rpm looser, after verifying (double checking) your input of info, here.

quote:

Originally posted by Novacaine:

quote:

Originally posted by Mike Rietow:

quote:

Originally posted by Novacaine:
I was just thinking it would run 5.60"s thats all. I was close when its cooler and not when its 80 degrees

The converter was belt for a 496 , 5800 stall. I ended up putting in the 555 and tried it. I have the shift light set at 7000 and it dont come on at the traps.



Converter if spragless should go 6300-6400 on T Brake no high chip on a combo like this. It'll then drop back to 6200 on shift, & slip 6-7-8% at stripe. It'll 60 better this way because it'll multiply more torque below stall. It'll jump out of it's skin better at the hit with a little more stall & the engine will accelerate better throughout the entirety of the run, converter slipping a hair more. Be more consistent from cool to warm conditions too. It's definitely 400 rpms too tight now according to the slip math, and observed 5800 stall.

Tell em you need it 300 rpm looser, after verifying (double checking) your input of info, here.

quote:

Originally posted by Novacaine:
The Heads I got from Chris Strub and the converter has a sprag.

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Originally posted by HS professor:
You didn't mention the cam or head size. Your a bit off for a 555, my bet is cam and heads.....

We see an easy two tenth swing in good to bad air on gas.

quote:

Originally posted by Mike Rietow:

quote:

Originally posted by Novacaine:

quote:

Originally posted by Mike Rietow:

quote:

Originally posted by Novacaine:
I was just thinking it would run 5.60"s thats all. I was close when its cooler and not when its 80 degrees

The converter was belt for a 496 , 5800 stall. I ended up putting in the 555 and tried it. I have the shift light set at 7000 and it dont come on at the traps.



Converter if spragless should go 6300-6400 on T Brake no high chip on a combo like this. It'll then drop back to 6200 on shift, & slip 6-7-8% at stripe. It'll 60 better this way because it'll multiply more torque below stall. It'll jump out of it's skin better at the hit with a little more stall & the engine will accelerate better throughout the entirety of the run, converter slipping a hair more. Be more consistent from cool to warm conditions too. It's definitely 400 rpms too tight now according to the slip math, and observed 5800 stall.

Tell em you need it 300 rpm looser, after verifying (double checking) your input of info, here.

They missed it, no big deal send it back. If the shift light doesn't come on, you don't think, you know it's too tight.

I said loosen it 300 rpm because 300 seems to be a number converter companies can nail perfect. If you say 400 rpm looser, it might see a third trip! Plus, for being tight the car seems to run alright for what it is (china heads). So I'd suggest to say 300 rpm's looser. You like the converter, we don't need anything experimental, just for this one to slip a hair more for the entirety of the run, while multiplying more torque out of the gate below stall! If it comes back 400 looser, good! 500 looser we don't want!

Good luck.

quote:

Originally posted by Novacaine:
So you are saying I need a stall of 6200 to 6400?

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Originally posted by Mike Rietow:
[QUOTE]Originally posted by Novacaine:
I got cam and heads from Chris Straub. cam is 765/745, 275/285 @ 50. Promaxx heads 320 cc flows 389 . I run E85
these are the heads
https://promaxxperformance.com/product/maxx-317-bbc/


That's looks to be a good combination of parts, together.

You'll reach your goal, start looking around at 30" slicks or even radial slicks, wide and short. Short will give you more effective gear 1/8.

Looking at the heads and cam, I think we're dead on. The converter needs to be 6200 stall.

quote:

Originally posted by Novacaine:
So If I run taller tire I need to up the gear.Say 32 tall slick and go from a from 4.88 to 538 gear? I have a 18195 hoosier on it now.

quote:

Originally posted by Mike Rietow:
[QUOTE]Originally posted by Novacaine:
I got cam and heads from Chris Straub. cam is 765/745, 275/285 @ 50. Promaxx heads 320 cc flows 389 . I run E85
these are the heads
https://promaxxperformance.com/product/maxx-317-bbc/


That's looks to be a good combination of parts, together.

You'll reach your goal, start looking around at 30" slicks or even radial slicks, wide and short. Short will give you more effective gear 1/8.

Looking at the heads and cam, I think we're dead on. The converter needs to be 6200 stall.