Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2278550
03/29/17 10:25 PM
03/29/17 10:25 PM
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Joined: Jan 2003
Posts: 31,027 Oregon
AndyF
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This is the port match out of the box for the Indy 400-3. My guess is that you are leaving 5% of the power on the table if you run this intake as is. The port match isn't even close to be correct. If Indy would just spend 5 minutes and run a CNC pass around each port and matched it to their intake port it would save the little guy a bunch of time and effort.
Last edited by AndyF; 03/29/17 10:26 PM.
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Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2278579
03/29/17 11:09 PM
03/29/17 11:09 PM
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Joined: Jan 2003
Posts: 14,496 So. Burlington, Vt.
fast68plymouth
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So. Burlington, Vt.
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2 sides to every argument...... The opposite view to "ootb intakes suck" is.... I've made 850hp with an ootb Indy 440-3.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 470 dry sump engine on the dyno
[Re: fast68plymouth]
#2278611
03/29/17 11:46 PM
03/29/17 11:46 PM
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Joined: Aug 2011
Posts: 2,857 Pattison Texas
CSK
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master
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Pattison Texas
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2 sides to every argument...... The opposite view to "ootb intakes suck" is.... I've made 850hp with an ootb Indy 440-3. Thats good to know,, WAY more power than my combination can make
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: 470 dry sump engine on the dyno
[Re: AndyF]
#2278680
03/30/17 01:05 AM
03/30/17 01:05 AM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
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Kalispell Mt.
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I kind of like having a good port necked down a smidge at the opening so I can match it exactly to my heads, it makes the manifold a little more flexible as to what it will work with.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 470 dry sump engine on the dyno
[Re: RustyM]
#2278822
03/30/17 12:32 PM
03/30/17 12:32 PM
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Joined: Jan 2003
Posts: 31,027 Oregon
AndyF
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How much of what we see in these mismatches can be attributed to core shift and how much to manufacturers not matching intakes to heads?
Thanks for all the helpful info guys- appreciate all you share. I consider it a missed opportunity by the mfgs to make extra money. If I sold CNC heads and I sold intake manifolds then the very least thing I would do is offer a CNC matching intake for an additional charge. The intake manifold already has to be in a machining center in order to surface the carb pad and drill and tap the bolts. Why not spend another 5 minutes of machine time and CNC the plenum for an extra $100 of revenue? Indy will CNC their dual plan intake to MW size if you ask so they know how to do this work. No idea why they don't take the next step and provide a good port match on the rest of their intakes.
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Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2279199
03/30/17 11:19 PM
03/30/17 11:19 PM
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Posts: 31,027 Oregon
AndyF
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Had some issues today but did manage to get some pulls done. One thing we figured out was that the billet valve covers are worth some horsepower so we switched over to them mid-day.
Last edited by AndyF; 03/30/17 11:19 PM.
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Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2279231
03/30/17 11:54 PM
03/30/17 11:54 PM
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Joined: May 2003
Posts: 6,562 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
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Downtown Roebuck Ont
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Well it's too early for April Fools so what's the deal? Bulletproof valvetrain is distorting the head because of giant roller cam spring pressure so the billet valve covers act as a girdle? I don't see any oil lines to them for spring coolers. Kevin
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Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2279257
03/31/17 12:15 AM
03/31/17 12:15 AM
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Posts: 31,027 Oregon
AndyF
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Re: 470 dry sump engine on the dyno
[Re: AndyF]
#2279268
03/31/17 12:34 AM
03/31/17 12:34 AM
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Joined: May 2003
Posts: 6,562 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,562
Downtown Roebuck Ont
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How much were you losing? I would think the other covers would leak oil if it was that serious of a vacuum leak but I guess the vacuum would prevent that. At atmospheric they probably sealed up fine to keep oil in so negative pressure distorted the clear tops? Kevin
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Re: 470 dry sump engine on the dyno
[Re: Coldart]
#2279513
03/31/17 12:50 PM
03/31/17 12:50 PM
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AndyF
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Who's oil pan? Looks nice, clean/sanitary package. Oil pan is one I had custom made. It is a billet pan.
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