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#1
09-08-2022, 03:35 PM
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Dyno Day
Tomorrow it's going on the dyno. Not sure if he will have time to run it in or do any pulls until later but the time is near.
Here are the details: 468 cid Edelbrock 87 cc D ports (unported, but cleaned up) 9.94 CR Butler/CC Hyd roller 236/242 @ .050, 520/540, 112 lsa 1.5 rockers factory intake Calibrated 750 cfm Qjet by Ray Klemm For the exhaust, we're gonna do some pulls with a set of headers, then with RA manifolds that have 2.3125" collectors to 2.5" Pypes down tubes. It would have been great to have a set of 2.5" manifolds but apparently that's not gonna happen. If anyone wants to make a guess at numbers, I'd love to hear what you think!
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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Ray Klemm calibrated Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear https://youtube.com/shorts/gG15nb4FWeo?feature=share |
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#2
09-08-2022, 03:37 PM
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476
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71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile |
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#3
09-08-2022, 03:41 PM
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491hp/561tq
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 "NSDQ"
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#4
09-08-2022, 04:49 PM
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446hp
Congrats on getting that engine together so fast! That’s impressive
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
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#5
09-08-2022, 05:03 PM
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It's been 9 months! Didn't seem that fast to me... LOL.
That's OK. The finish line is in sight.
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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Ray Klemm calibrated Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear https://youtube.com/shorts/gG15nb4FWeo?feature=share |
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#6
09-08-2022, 05:10 PM
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470 hp 560 tq 450 hp with manifolds good luck hope it’s a great day tomorrow.
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#7
09-08-2022, 05:48 PM
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Looking forward to this one! Similar cubes, same cam and carb. Big difference is the higher compression and aluminum heads but it should give me a ballpark for my build.
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Ken '68 GTO - Ram Air II 464 - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (build thread | walk around) '95 Comp T/A #6 M6 - bone stock (pics) |
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#8
09-08-2022, 05:50 PM
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With the Headers 460 hp.
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I do stuff for reasons. |
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#9
09-08-2022, 06:27 PM
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I'm going a little higher than others and say 500 HP and 575 torque when using the headers
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62' Lemans, Nostalgia Super Stock, 541 CI, IA2 block, billet 4.5" crank, Ross, Wide port Edelbrocks, Gustram intake, 2 4150 style BLP carbs, 2.10 Turbo 400, 9" w/4:30 gears, 8.76 @153, 3100lbs |
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#10
09-08-2022, 07:25 PM
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Again, as mentioned before, don't let your dyno operator stop the pulls short of where the combo makes peak power !
.
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
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#11
09-08-2022, 07:32 PM
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425 hp at 5252 rpm. All you hp prognasticators must have an rpm tied to your prognastication, otherwise invalid.
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#12
09-08-2022, 07:33 PM
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Quote:
 I'm gonna say 485/550 with manifolds and 500/565 with headers. Also, I don't know anything about the dyno, whether it's generous or not.
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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Ray Klemm calibrated Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear https://youtube.com/shorts/gG15nb4FWeo?feature=share |
| The Following User Says Thank You to jhein For This Useful Post: | ||
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#13
09-08-2022, 08:02 PM
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From going and viewing what those heads your running flow out of the box at your .520” lift, your motor could make 510 Hp, but that stock intake will keep you well below that, especially with a cam which has under 252 duration@ .050”.
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I do stuff for reasons. |
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#14
09-08-2022, 08:24 PM
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When I originally posted up my combo people were saying I was gonna be over 500 hp easy, which was probably a little more than I was looking for. But, I was worried that if I did things to tone it down like keeping iron heads, smaller cam, less stroke, etc, that I my end up with very little gain for all the effort. So I went with the stuff I have because I felt like a little too much would be better than too little. So if I end up in the 475 hp range that would be pretty close to what I wanted in the first place.
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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Ray Klemm calibrated Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear https://youtube.com/shorts/gG15nb4FWeo?feature=share |
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#15
09-08-2022, 10:05 PM
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Quote:
478 and 530
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" Is wearing a helmet illegal" Mike Kerr 1-29-09 |
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#16
09-09-2022, 04:07 AM
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I would agree, if the OP made 475 he would be doing very well, and if it where my motor I would be happy with such!
At least he knows well in advance that down the road if he needs or wants such a easy thing as a intake manifold up grade can likely pick him up 15 or so Hp even if the motor was breathing thru exh manifolds.
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I do stuff for reasons. |
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#17
09-09-2022, 07:30 AM
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Stock intake will do over 500. I've done that, with ra exhaust manifolds in place. I used a 239 @.050 cam, only just a hair bigger than yours.
With ra manifolds and stock intake I see no reason you can't make 480hp and 560 tq |
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#18
09-09-2022, 09:08 AM
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If it doesn't make 500hp/560-580 torque something is amiss someplace.
I've built and dyno'd several nearly identical builds and they all came in close to 500hp or a little higher. Here is a dyno run from a customer of mine's 455 with foctory iron heads and the same cam you are using.
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#19
09-09-2022, 11:54 AM
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Quote:
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
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#20
09-09-2022, 11:57 AM
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515 hp/550 tq
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears ‘66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears (Traded) '69 LeMans Vert, 350, #47 heads: Non-running project |
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