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Re: 440 Stroker Build Questions
[Re: tywebb2]
#1434200
05/13/13 09:29 PM
05/13/13 09:29 PM
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Joined: Jan 2007
Posts: 7,664
IN
ahy
master
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master
Joined: Jan 2007
Posts: 7,664
IN
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Quote:
I hate to say it but the thought also crossed my mind after reading 600hp is the limit, etc. with the 440 block. Could a stroker be overkill for my application and just open up other cans of worm? I'm curious....what hp is my 8 3/4 rear good too? I have no interest in upgrading to a dana.
The major issue I have with my engine now is the TRW pistons. The valve notches are too small for the Eddy valves and I am at the limit of my valve clearance and my compression is a bit low (9.9:1) with pistons down in hole (bad quench height).
Would it make more sense just to swap out the stock rods with H-beams and get a new set of pistons....then possibly CNC porting the heads? Would I still need to zero deck the block or could I buy pistons off the shelf that would put me where I need to be out of the box? Then with my piston-to-valve clearance opened up I could go with a different cam.
I put the numbers in a hp calculator and it came back at 519hp if my weight figure is correct. How much do you think I would pick-up (hp and et) getting the proper quench height, 10.5:1 compression, better cam, cnc ported eddy heads?
A big benefit of the aluminum heads is quench area. This allows higher compression and power on pump gas. To get the best quench you really need to zero deck or close. Its likely possible with stock pistons but will take some deck milling. If it hasn't been squared up already, it needs milled anyhow since factory dimensions varied a lot.
For the rear, its largely a matter weight. With 3700# and 11'ish second 1/4 I think you are living on the edge already. I run an 8 3/4 behind my 496 but that's road driven only. No strip, no slicks.
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Re: 440 Stroker Build Questions
[Re: ahy]
#1434201
05/13/13 09:49 PM
05/13/13 09:49 PM
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Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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I still have an 8-3/4 in my 63. So far its held up but I only race about 2 times a year. If I raced alot I would be more worried about it and I would go for a Dana. If you go low 11's at your weight and only race a few times a year you may get away with it like I have so far. On my 440 block I went with main studs and as I said I dont race it alot as it has held up fine for 2 years so far. Ron
Last edited by 383man; 05/13/13 09:52 PM.
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Re: 440 Stroker Build Questions
[Re: BradH]
#1434202
05/13/13 11:05 PM
05/13/13 11:05 PM
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Joined: May 2003
Posts: 6,563
Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,563
Downtown Roebuck Ont
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Quote:
OK, here's the dissenting opinion about to rear it's ugly (and balding) head: If all you want is low 11s (per your above statement), you don't need to build a stroker. A stronger stock-stroke 440 will get you there, plus your current 4.10 gear & 28" tire combination will be well suited to the shorter-stroke combination's RPM range on the track.
IMO, you should...
- port the E heads
- run a fairly aggressive solid flat-tappet cam
- run a good single-plane intake (not sure what you have now)
- build for about 10.5 CR to stay safe on 93-octane pump fuel
A 440 in that HP range would probably be just as happy (maybe happier) w/ 1-7/8" headers. But since I think you said you already have 2", run what you got.
You may need to change converters, but that depends on how your current one works w/ the new engine. The biggest hit on performance will be if the 10" doesn't let you 60-ft. as well as something a little looser.
FWIW, this is both opinion and fact-based from the results I've seen on my own builds.
He also said mostly street driven. 500+ cubes makes it easier to keep all the compromises less compromising if you will.
Kevin
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Re: 440 Stroker Build Questions
[Re: tywebb2]
#1434203
05/14/13 02:49 AM
05/14/13 02:49 AM
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Joined: Mar 2009
Posts: 2,464
Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,464
Sydney,Australia
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my 8 3/4 called i quits for the second time in the 11.4 range
i put a strange dana in it through drdiff
Tex
New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
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