Re: Andy, your 470/270TF indy 440-3 results
[Re: CSK]
#2715785
11/14/19 04:30 PM
11/14/19 04:30 PM
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Joined: Aug 2011
Posts: 2,872 Pattison Texas
CSK
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master
Joined: Aug 2011
Posts: 2,872
Pattison Texas
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my point is ,the parasitic loss also goes up with more rpm
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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Re: Andy, your 470/270TF indy 440-3 results
[Re: mopar dave]
#2715801
11/14/19 05:00 PM
11/14/19 05:00 PM
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Joined: Jan 2003
Posts: 13,402 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
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Posts: 13,402
Marion, South Carolina [><]
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So you're thinking a 470 w/ the same top end package from your 511 would run faster?
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Andy, your 470/270TF indy 440-3 results
[Re: an8sec70cuda]
#2715806
11/14/19 05:10 PM
11/14/19 05:10 PM
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Joined: Mar 2009
Posts: 2,475 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,475
Sydney,Australia
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sooooo , you go 10.40@129 ? Mine will go 10.30@129 at nearly 3800lbs Around the same HP ? What is you sixty,1/8th numbers ? You better look beyond just the motor . As noted before look at chassis, converter , gearing , tyres . I am with Brad , if you have no absolute goal you will never be happy at any point I see no point in throwing $ in the air hoping for results
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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Re: Andy, your 470/270TF indy 440-3 results
[Re: tex013]
#2715827
11/14/19 06:32 PM
11/14/19 06:32 PM
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Joined: Jan 2003
Posts: 6,266 Renton Washington
Triple Threat
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master
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Posts: 6,266
Renton Washington
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I wont muddy the waters of the engine debate. Just going to add I picked up .3 and 3+ mph once swapping converters from a good custom converter to another. They stalled the same RPM...
-Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA
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Re: Andy, your 470/270TF indy 440-3 results
[Re: Triple Threat]
#2715846
11/14/19 07:10 PM
11/14/19 07:10 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
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I Live Here
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So. Burlington, Vt.
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Just going to add I picked up .3 and 3+ mph once swapping converters from a good custom converter to another. They stalled the same RPM... Oh yeh. When the converter just isn’t “right”, the car will never run the number.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Andy, your 470/270TF indy 440-3 results
[Re: fast68plymouth]
#2715860
11/14/19 07:26 PM
11/14/19 07:26 PM
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Joined: Oct 2011
Posts: 326 Alberta
Wookie316
enthusiast
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enthusiast
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Posts: 326
Alberta
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I did spring for the competition porting on my 400 Indy from Wilson. It is a very pretty piece. Why did I do that? The ultimate goal was to eventually have that manifold sitting on a low deck Indy block. However I found a deal on a World RB block after I had the porting done on the manifold. So that idea went out the window. Would I spring for manifold porting again? I’m not sure? Like Dwayne says. Lots of ways to spend $ in different ways compared to what it costs for manifold porting. I don’t regret the porting. I know it helped. Also on a side note I have changed only a converter before and found 2/10ths and 3MPH before. The right one makes a world of difference.
1971 Plum Crazy Super Bee. 572 World Aluminum block with a Cope 727 & Dana 4.10 out back. 9.88 @ 138 with a 1.35 60 NA. Dialed back to 10.0’s. 4000 lbs with me in it.
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Re: Andy, your 470/270TF indy 440-3 results
[Re: mopar dave]
#2715908
11/14/19 08:51 PM
11/14/19 08:51 PM
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Joined: Mar 2009
Posts: 2,475 Sydney,Australia
tex013
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top fuel
Joined: Mar 2009
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Sydney,Australia
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The 60 was a 1.45. 1/8 was a 6.66@105 I think. Will have to look at slip. ok . good mph to 1/8 my example : 1.448 - 6.536@102.91 - 10.301@129.74 have you videoed your tach on a run ? 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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Re: Andy, your 470/270TF indy 440-3 results
[Re: mopar dave]
#2715936
11/14/19 09:48 PM
11/14/19 09:48 PM
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Joined: Aug 2003
Posts: 43,309 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,309
Bend,OR USA
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The ring pack used and the cylinder wall finish has a lot to do with how much friction the motor has to overcome. Dave, have you used a torque wrench to measure how much resistance your motor has for break away and rotational torque? If not you might try that I have and still do that Along those lines think about adding .350 longer stroke to the crankshaft which adds .175 piston and ring travel at the top of the stroke and .175 to the bottom of the stroke which doesn't seem to be a problem on any of the motors I've built, raced and dyno tested Theory is one thing, results are another My NHRA legal M.W. stocker motor ,4.280x3.750 that had to use 5/64,5/61/3/16 ring package had a lot more friction than my first pump gas 400 block stroker motor (4.375x4.250 had with the 1/16,1/16, 3/16 standard tension oil ring pack had The stroker motor made 612 HP at 5500 RPM with a set of mild 906 heads and a six pack intake, the Stocker motor struggle to break 525 HP with two4 barrel carbs and a lot better head I love stroker motors
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Andy, your 470/270TF indy 440-3 results
[Re: mopar dave]
#2716062
11/15/19 11:16 AM
11/15/19 11:16 AM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
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I Live Here
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So. Burlington, Vt.
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Well, my only response to that line of reasoning is this.......
You might be able to get 700hp out of a 470 easier and cheaper than you can from a 511....... but I can’t.
When you dyno tested that 511....... on the same dyno you tested the 408 on....... how much less did it make?
If you changed the rotating assy from the current 511 to a 470...... and changed nothing else....... how much more power would it make? For less $$$ than the $1675 it would cost to send your intake to Wilson, you could sell your 511 rotating assy and replace it with a 470 rotating assy.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Andy, your 470/270TF indy 440-3 results
[Re: mopar dave]
#2716080
11/15/19 12:08 PM
11/15/19 12:08 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
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I Live Here
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So. Burlington, Vt.
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As for Rener-Morrison worrying about the efficiency of stroke and rod ratio....... you did see that the smallest BB crate motor they sell is 540ci.
Sooooo, if you bought Victor heads, and put them on a 470....... the rockers are cheaper?
You could have just as easily put heads on your 511 that used cheaper rockers.
A 511 costs zero extra dollars over a 470.
For me it’s really as simple as this........ if one can’t figure out a way to make extra power from the additional 41 cubes..... they’re doing something wrong.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Andy, your 470/270TF indy 440-3 results
[Re: fast68plymouth]
#2716086
11/15/19 12:41 PM
11/15/19 12:41 PM
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Joined: Aug 2011
Posts: 2,872 Pattison Texas
CSK
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master
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Pattison Texas
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As for Rener-Morrison worrying about the efficiency of stroke and rod ratio....... you did see that the smallest BB crate motor they sell is 540ci.
Sooooo, if you bought Victor heads, and put them on a 470....... the rockers are cheaper?
You could have just as easily put heads on your 511 that used cheaper rockers.
A 511 costs zero extra dollars over a 470.
For me it’s really as simple as this........ if one can’t figure out a way to make extra power from the additional 41 cubes..... they’re doing something wrong. BINGO !!!!!
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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