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#1
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Darin Morgan PRI ICE presents Pontiac 570" 510cfm 1250hp engine
https://www.youtube.com/clip/UgkxBls...WBv85omkFkbCTQ
click link above, then click watch full video at bottom of picture of video, it will play the entire Pontiac engine section perhaps this has been posted already, but it's not often you see a Pontiac aftermarket block/head combo flowing 510cfm intake at a major ICE performance industries workshop presentation. by the looks of the rocker system, angled pushrods, and 570" I'm assuming this was an IA block, Tiger head combo, made around 1250HP on the dyno. but it's hard to tell by the light vague slide pictures. they added a plate across the valve cover rails on the intake side, to raise the port higher, and used a 351 Cleveland valve cover. or is it Edelbrock Pro Port CNC heads on a Kaufman MR1 block ? can't tell Last edited by GTO-relic; 04-12-2024 at 08:18 AM. |
#2
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Darin Morgan is among the Elite cylinder head experts still working in the field. I have learned allot attending numerous seminars he either headlined or participated in. He was helpful to me personally on two projects. 1. He was very respectful of Arnie Beswick's lifetime achievements and tried his best to secure some old Pro Stock castings for the Tameless Tiger. 2 . I dragged one of our Billet Ram Air V prototype heads along with blue prints and data to a Darin Morgan seminar. He spent about 1/2 hour one on one going through numerous aspects of our design, pointing out areas of improvement, things to consider, areas to test on the flow bench and other insights. Once he got over the fact that we were 100% committed to the Pontiac platform, he was extremely helpful and supportive. He initially had the "Why would you try to race this thing with one hand tied behind your back attitude?. But he eventually understood the importance of maintaining the "Pontiac" heritage. Highly recommend attending one of his seminars if your primary interest is cylinder heads/air flow.
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#3
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I didn't watch the video but it sounds like your describing John Langer's heads.... They're called CV'juans. Baddest Pontiac head on the planet.
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#4
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it sure looks, sounds like a JL combination, but who knows for sure.
there was more than just one of those engines built for people. |
#5
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or were they trying to find early BBC castings ? elaborate on what he said about your RA V billet prototypes ? |
#6
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Have not had time to watch the video yet.
Highest HP NA ponchos https://forums.maxperformanceinc.com...d.php?t=861888 Stan
__________________
Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
#7
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With our nitro Ram Air V heads, I had a rapid prototype in plastic and he suggested using 1/2 a dozen different size and shape tubes for the pushrods on the flow bench. To prove the large tube we needed to run a 1/2" pushrod through the center of the port would hurt the flow much less than anticipated. At peak the max flow between no tube and a 9/16" tube was right at 20 CFM on a 430 CFM port. He also gave us some pointers as how much to raise the exhaust port and shape the areas around the guides and the 5 angles for the intake seat and radius for the exhaust. We also reduced the exhaust valve size slightly on his recommendation. Little stuff like that. Back to topic. Sorry if derailed. |
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#8
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Didn't Darin recently make a statement about the tunnel port design being flawed?
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#9
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back in the 1940's practically every military fighter, bomber used turbos or blowers. they wouldn't be caught off the ground without it, or they'd get shot down in flames. it seems like the car engines are moving in that direction today as well. the tunnel port did a great job competing against, the beating the Hemis on many occasions. it also won Lemans in France. it's arguably the best inline valve wedge head ever used on a V8. |
#10
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https://www.facebook.com/share/p/JJ4...ibextid=oFDknk Kinda funny Pontiac had to make the Chevrolet head "right" for them. By today's standards they are valve lift limited and weak in the rocker arm mounting area.... Still capable of making a 1k plus naturally aspirated pretty easily. I remember these three versions: 427 head 460cc runner 18 degree 386 head 365cc runner 15 degree 385 head 420 cc runner 15 degree I'm not familiar with the "396" but I'm thinking maybe the other three versions had the standard port locations but were similar to the above. Pretty confident the engine Darin mentions in his video uses CV-juans Last edited by PAUL K; 04-12-2024 at 08:05 PM. |
#11
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correction:
the gentleman presenting the Pontiac engine specs in the video clip is PRESTON MOSHER, Manager of cylinder head dept. at BES Racing Engines. the engine was a Pontiac he did at BES and perfected over years. Darin Morgan started the presentation, then handed it of to Preston Mosher. Last edited by GTO-relic; 04-13-2024 at 06:40 AM. |
#12
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good guess, but it's not. However I looked up Juan and he's considered among the best, or the best by some.
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#13
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#14
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#15
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__________________
Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
#16
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CV-juans are the fastest NA Pontiac heads on the planet. So what heads are they? |
#17
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John posted this is Sept 2022. From link I posted above.
1298/914 with break in oil 7.54@181 at 2800 pounds with an auto trans 7.66@179 at 3010 pounds with a clutch last weekend in Indy With the weight out (2800 pounds) with the clutch in the fall in east coast air, it will go 7.30’s on a small tire. Stan
__________________
Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
#18
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#19
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Paul,
I don't know what engine they are talking about in that video. I do know that 8 or more years ago John had post Torque 870 @ 7000 and HP 1290 @ 8300. Stan
__________________
Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
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#20
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Possibly some sort of Visner head? {sp} I know they made a few different variations for Pontiac application.
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