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#21
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Here is my head flow Darby.
These are the flow numbers after SD ported them on Daves flowbench. lift......Intake......Exhaust.....% 100....77.1..........62.6.........81.1 200....150.6.........114.6........76 300....204.9.........152.9........74.6 400....250...........177.9........71.1 500....288.2.........200.3........69.5 600....319.1.........226.6........71 700....336.8.........239.7........70.5
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4. |
The Following User Says Thank You to quick67bird For This Useful Post: | ||
#22
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I know that D port heads are not the best heads out there, but something in me would like to see how fast I can make my car with a lowly set of D ports.
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4. |
The Following 2 Users Say Thank You to quick67bird For This Useful Post: | ||
#23
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DPTTFMF!!!
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
The Following User Says Thank You to johnta1 For This Useful Post: | ||
#24
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The D ports don't get much love and I understand why. I know the exhaust is deficient when compared to the RA IV ports, but I have ran them for so long I guess they have a place in my heart.
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4. |
#25
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With D port heads flowing what mine flow what kind of power could be expected with a S475 turbo? I am thinking E-85 with 11 to 1 compression that my motor has now and maybe 7-8 lbs of boost. From what I have read it looks like this is able to be done.
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4. |
#26
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You should be ok with that compression and boost level with E85. From my limited experience you have to treat it like 108 to 110 octane race gas. The LS turbo engine I'm doing now is 10:1 for 15 psi on E85. Hope it works!
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The Following 2 Users Say Thank You to rodneybutler For This Useful Post: | ||
#27
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IMO 11:1 with iron heads is pushin things if you get beyond mild amounts of boost... Watch your charge temps(intake manifold) and use water injection... Usually 50/50 water meth... but I'd be inclined to run a greater percentage of water as even methanol can be induced to detonate if the combination of charge temp and compression temp gets too high. Intercooling should also be a consideration if you start going beyond mild amounts of boost. Especially at that compression.
I plan on runnin iron D-Ports myself... 8-8.5:1 if gas and @ 9.5-9.75:1 if E85 and turn up the boost. I have too much experience pushing combustion control to its limit... I can be conservative and still make more power than I can use. |
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#28
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Thanks Rodney. I will be calling you and Travis when I get ready for parts and consultation advice.
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4. |
#29
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Quote:
I need to do more research to see what kind of power to expect.
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4. |
#30
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Quote:
I am guessing u will use a 1 7/8 header?
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
#31
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I would have to look at my paperwork, but unfortunately the.information is at home in WA and I am working in ND. I will check when i get home in a week or so. I do have 1 7/8 headers from Maddog.
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4. |
#32
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I plan to run a air/water intercooler on my Firebird when I put it together, and just run it with the water in the intercooler, no pumps or water tank. I know it will work for one 1/4 mile pass and while street driving the air going thur the intercooler will cool it back down if you don't keep hammering on the gas peddle.
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The Following User Says Thank You to v869tr6 For This Useful Post: | ||
#33
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Quote:
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#34
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Don't bet on what? the highest inlet air temp I saw last year at the end of a pass was 184 degrees, and that was after a pass and then draining a hot intercooler and just filling it back up with cold water and running again.
This was running with 24 psi till 5.5 seconds and turning the boost down to 20.5 psi out the back door. |
#35
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If your going to use an intercooler why not get all you can get out of it - I run 8 gal. of ice water in the reserve tank - starting with mostly ice and turn it all into luke warm water after one pass at 19-22 lb of boost, intake air temp at start of run is 55 degrees and at end is 70 to 80 -- there is a lot of power in that cooler air. and it provides a larger tuning window and easier on parts. Just my suggestion.
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The Following 3 Users Say Thank You to cgeise For This Useful Post: | ||
#36
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Quote:
I can't disagree with any of that, but he is talking about a mostly street car with a S475 and a good flowing set of heads. Really depends on how hard he pushes the car, for me it will be nice to not affect the cooling on my Firebird with a air/air intercooler, no water tank to package or plumb, no cost for the large pump and lines to move enough water in 9 seconds to matter. Still get to keep my passenger seat. My S475 setup and a blowthru isn't going to need to much help at 15 psi so I just throw my idea out there. I plan to add a large bung and some extra volume to the water side tank on my intercooler and throw some ice right inside the intercooler. $80 for a e-bay intercooler shipped plus $30 for a bung fits my budget, thankfully my son can do the tig welding for me. I will report the results of the partly ice filled intercooler on my Triumph when I get them. |
The Following User Says Thank You to v869tr6 For This Useful Post: | ||
#37
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More than one drag inter-cooler set-up has a large "tank" with the inter-cooler inside the "tank". No transfer system. Works on very quick drag cars very well if you have access to a ground water supply and money to buy 3 bags of ice each pass and a very large ice chest to store the ice. (Think 30 bags of ice minimum).
Super Street used to go 10 rounds to win so that is at least 30 bags of ice. Naturally you need a qualifying pass or two in there also. So even sending your helper out for more ice demands a large storage chest. Two/four runs a day like a Norwalk deal for a fast car and you need minimal storage. Just saying. Tom Vaught
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
The Following User Says Thank You to Tom Vaught For This Useful Post: | ||
#38
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Will an air to air intercooler be ok for street driving and some racing. I have a double pass aluminum radiator so I am not too worried about the engine heating up as I have a hard time getting heat into it now with pump gas. I figure with the cooling properties of E-85 the motor will run even cooler.
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4. |
#39
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Couple of people in Texas run Air to Air Vortech supercharger systems and have to make sure that the inter-cooler does not starve the Radiator for air on hot days.
In your case, Washington state, you probably could get by with an inch of clearance between the two units. Air to Air actually works much better on a long distance sprint (like the silver state deal) where the water to air inter-cooler would continue to get hotter and hotter each mile vs the exchange rate of the heat exchanger. Tom Vaught
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
The Following User Says Thank You to Tom Vaught For This Useful Post: | ||
#40
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Quote:
The good news is I got a new killer job back home and can stop working in the oil fields. I just have to wait for all the paperwork and background checks to finalize as well as my physical results to come back. Finally for once in my life I will have a job that I am not working 60 plus hours every week.
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67 Firebird 467 cubic inches 7.71 @ 92 in the 1/8 and 11.69 @ 115 in the 1/4. |
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