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Discussion Starter #1
just got my engine back today after many months of waiting and i was wondering about a guesstimate of horsepower and quarter mile time i know kind of a pita question but its my turn to ask:D its a 383 chevy 4340 eagle crank,h-beam eagle rods,srp 10;5;1 pistons,track1 brodix heads,cam is a comp hydralic roller xr300hr lift .562in .580 ex /duration.050 248in 254ex ,airgap intake and a quickfuel 750 mechanical secondarys,dougs inch and three quarterheaders 3" exhaust ,turbo 400 trans 3200 stall and a narrowed dana 60 w/4;56 gears car is backhalfed thanks for any help
 

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Here's what I come up with, though I'm assuming a 30" tire height:

rpm hp tq
2000 125 327
2500 163 343
3000 207 362
3500 273 410
4000 345 453
4500 415 484
5000 474 498
5500 509 486
6000 537 470
6500 537 434
7000 531 399

With the parts listed I come up with [email protected] in the 1/4, [email protected] in the 1/8, 1.737 60ft. and 3.208 0-60. You need more convertor. With a 4500 stall I get 10.85 1/4, 6.879 1/8, 1.522 60ft., and 2.792 0-60. Now with a 5000 stall I get 10.723 1/4, 6.772 1/8, 1.487 60ft., and 2.629 0-60. That 3200 is going to really hurt your cars performance. Also, make sure you have some good valve springs and light weight titanium retainers on the engine so you can reach that 6500-7000rpm range without floating the valves. Remember, this is just an estimation and a tool, it's not gospel on how your car will run, but how it could run with the parts given.
 

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Discussion Starter #4
would a bigger converter work ok on the street cause its mostly a street car or should i stick with the 3200 stall i dont know much about coverters thanks
 

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would a bigger converter work ok on the street cause its mostly a street car or should i stick with the 3200 stall i dont know much about coverters thanks
There's a BIG difference between a GOOD converter and an el-cheepo special!! A GOOD 5000 converter will actually slip LESS (and make LESS heat) at cruise speed than a cheep 3000-3200.:yes:
 

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Doesn't a T-400 eat alot of power ?

I can't wait till I get rid of my "cheap" converter.
I just have to $ave up more.

BTW, 5yrs with NO tranz cooler in the rad. Just 2 sandwich style in series with no problems.

Having said that ... my tranz is going to puke. :D
 

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Discussion Starter #7 (Edited)
Can i have some suggestions of a good converter and size. The coverter i bought was a trans specialties 3200 10" big shot pn#t03-10000hs thanks
 

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I would go ahead and try the one you have, or if it's never been used, see if you can swap it for a different one from the same place.
I'm a fan of higher rpm converters than most guys run on the street, but it has to be a high quality piece. I use a 6000+ rpm 8" Munsinger converter--I've used it behind engines from 300 h.p. to 650 h.p. and it's worked great with all of them, but I don't do a lot of street driving--unless you consider Calif. to Tennessee street driving!
 

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Discussion Starter #10
is a trans specialties a cheap converter i think i spent 370 for it but i bought it from my local speed shop about a year ago and im willing to bet they wont return it
 
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