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#21
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Watching the video of Steve setting up the gear drive, I said to myself it seems look the crank center line has been moved. In the comments I saw where Rich had said the block was align I don't remember if he said bored or honed. Stan
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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 |
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#22
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I only listened to about half of the video, but in the beginning he said that he was going to align bore it but the 2 different metals (aluminum and steel caps) required him to do some extra measuring and cutting to make it work.
Something about you can't cut the 2 metals together? Sounded like he would cut the block separate then the caps?
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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! W.E.C moment "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 |
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#23
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When I saw him having trouble with the bolt up of the mounting plate, that was the first thing I thought of too was the align bore he had done. But that's the beauty of the gear drive is this issue is easy fix like Steve did. Also setting cam timing is dead on. Enough with the gear drive from me. Over the winter I got into his weekly U tube videos with outside of the box builds. Generally helping people dial in their combos on the dyno. From what I gather from him, is his builds are not from manufacturer parts. He hand builds everything with his name on it. If he can t he out sources too those who hand make what he needs. I think that's why he looks at parts and looks puzzled most times. Should be dyno testing that blow thru motor this week if they got the correct girdle from Jeff. I really think those rocker studs need to be looked at closer. To short to me. I feel bad for Sweeney. He doesn t like the valve covers, lol. They are ridiculously heavy.
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#24
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Does anybody know the part number for the 55mm roller cam bearing that were used those engines in the video? Also, what rear cam plug is used when you go with the 55mm roller cam bearing?
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Jim 71 Firebird, best 1/8th mile time of 5.02 at 142 at altitude in Vegas |
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#25
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I can get you that info tomorrow if you dont have it by then.
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1968 firebird cameo white on red 400 4 speed 1969 carousel red firebird 455, richmond 5 speed 1964 gto pump gas, 505 IA2 EHeads, EFI, 92 mm turbo ice cream getter in process now.... 1970 lemans hardtop, gto clone Atoll Blue 1972 Maverick powered by 2004 gto ls1 and t56 6 speed, 8.8, fox strut front end, wifes car |
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#26
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That would be awesome, thanks.
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Jim 71 Firebird, best 1/8th mile time of 5.02 at 142 at altitude in Vegas |
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#27
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The billet block he said that it had aluminum caps and he had them hard anodized. Seems weird. A basic aluminum block gets the Program steel caps but the full all out race solid block gets aluminum caps ? I spoke to Jeff years ago and he said he was getting a little cap fretting at 2500 HP. Hard to imagine not getting a little of that a 2500 HP and our style of caps. The LS engines, while I can't stand them did the mains right. |
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#28
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Looks like
I struck out twice no part number on my bill for the bearings looking around comp cams Crower et all have offerings probably all rebranded And there is no let Number on my rear plug I did measure and the hole in the block is 2.490" hope it helps
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1968 firebird cameo white on red 400 4 speed 1969 carousel red firebird 455, richmond 5 speed 1964 gto pump gas, 505 IA2 EHeads, EFI, 92 mm turbo ice cream getter in process now.... 1970 lemans hardtop, gto clone Atoll Blue 1972 Maverick powered by 2004 gto ls1 and t56 6 speed, 8.8, fox strut front end, wifes car Last edited by mysticmissle; 04-23-2025 at 11:40 AM. |
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#29
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Thanks for trying, I appreciate it.
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Jim 71 Firebird, best 1/8th mile time of 5.02 at 142 at altitude in Vegas |
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#30
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I found that video boring. Tons of aluminum billet CNC, machined to create custom parts, none of which any of us will ever use, topped off with billet aluminum CNC machined one-off pair of Canted Valve heads.
Brings back the old argument (started when aftermarket Al. heads became available) "when should a Pontiac cease to be called a Pontiac"
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GOOD IDEAS ARE OFTEN FOUND ABANDONED IN THE DUST OF PROCRASTINATION |
| The Following User Says Thank You to KEN CROCIE For This Useful Post: | ||
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#31
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Nothing new really. Were the Mickey Thompson hemi engines still "Pontiac".
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#32
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I remember reading the Milodon instruction on the gear drive I have. You are supposed to use "news paper" to set the clearance on the gears and not the paper the instructions are printed on. He must have not wanted to take the time and go buy a paper. I removed the gear drive after discovering the two bolts that he had to drill and tap loosed up after dyno testing the engine. Most likely my fault as I didn't use Loctite as I was supposed to. I put in a Sims roller. Someday I might go back to the gear drive.
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Todd Sedlmeier Who ever thought pinewood derby cars would lead to this! October 2004 HPP Shootout participate http://www.highperformancepontiac.co...out/index.html 86 Grand Prix 535 High Port 8.93 @ 153 65 GTO 433 High Port 12.04 @ 113 |
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#33
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#34
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I know it's been beat to death but I'll weigh-in on what makes it Pontiac.
I think it's a preponderance of original architecture.....not necessarily 100% compliance. In the case of the Boss Bird nitro engine, there were zero factory parts, but here's what we considered faithful ties to the Pontiac origins: stock bore spacing 10 head bolts in stock locations stock main bearing size/location stock deck height stock cam location stock timing cover interface stock oil pan rail wedge heads with RA5 valve layout stock valve cover rail And we shattered the ceiling on how much power & violence a Pontiac was thought to be capable of. So that's useful inspiration to everyone building a mild-to-moderate combo. FWIW, Eric
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"Everybody has a plan until they get punched in the mouth" noted philosopher Mike Tyson Life begins at the end of your comfort zone. “The mind, once stretched by a new idea, never returns to its original dimensions.” Last edited by Elarson; 04-25-2025 at 03:34 PM. |
| The Following User Says Thank You to Elarson For This Useful Post: | ||
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#35
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Warp heads are not my thing but are not one off either. I would have liked to see a those builds with heads ported by Morris. That might have been interesting. Now PMD did play around with the idea of a SOHC Hemi head and it would have had canted valves. Make that head but maybe with 2 cams per head all on our bore spacing and you would have a head no one could argue that its not a Pontiac ! |
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#36
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1978 Pontiac Grand LeMans.......out next year Previous - 2001 Jerry Haas-built P/S Grand Am - former WJ car, Hoffman Racing 535" IA2, Tiger Heads/Intake, Single Dominator, PG Best ET: 7.776 @ 175.94, 1.096 60', 2375 lbs. |
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#37
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When we tore it down, I remember one or both of the bolts that hold the plate on sheared off. Not sure what stock size bolt was, but we did go up in size.
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1978 Pontiac Grand LeMans.......out next year Previous - 2001 Jerry Haas-built P/S Grand Am - former WJ car, Hoffman Racing 535" IA2, Tiger Heads/Intake, Single Dominator, PG Best ET: 7.776 @ 175.94, 1.096 60', 2375 lbs. |
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#38
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I agree with ELARSON, Once you put a pair of canted calve heads on a Pontiac 'looks similar ' block, in my opinion, it's a rat Chevy in a Pontiac costume
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GOOD IDEAS ARE OFTEN FOUND ABANDONED IN THE DUST OF PROCRASTINATION |
| The Following User Says Thank You to KEN CROCIE For This Useful Post: | ||
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#39
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Just to clarify, we felt pretty strongly about sticking with the RA5 wedge head design for the Boss Bird. But me personally, I'm ok with canted valve heads as long as most of the other factory architecture is retained. Same with the comment made earlier about M/T hemi heads for a true Pontiac. The whole "is it still a Pontiac" is a huge gray zone and I respect others for sticking to their own interpretations.
Eric
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"Everybody has a plan until they get punched in the mouth" noted philosopher Mike Tyson Life begins at the end of your comfort zone. “The mind, once stretched by a new idea, never returns to its original dimensions.” |
| The Following User Says Thank You to Elarson For This Useful Post: | ||
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#40
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Chevy people didnt care about silly stuff, and they got all sorts of things that kept them evolving...Factory 4.84 bore space was traded for up to 5.3 bore space...Head designs all over the map...If factory parts didnt bolt on, they made new stuff that did, and people bought tons of it... This conversation has been beat to death, with zero results...I remember back in the late 80s and early 90s, people were so adamant about original parts, it drove the demand for round ports to the point that new people never gave Pontiacs a second look, and bought the other brands...That also kept the demand for fast parts to such a minimum that they had to be special runs that werent cost effective for anyone...Thankfully there are some people that no longer care about any of that, and the parts are slowly coming...Tommy Youman's GTO is PONTIAC powered, no matter what some say...Same with Richard's 63... |
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