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#21
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All he did was remove the roof of the intake, weld on a flange to match his "Holley Tri-Power" Top, and mount the carbs.
He did deepen the "windows" cast into the manifold between the two side by side plenums. Basically buys a Offy Dual Quad intake and modifies it to run the Holley 2-bbl carbs. Patterson has been doing this kind of stuff for years. Anything to make a buck. He wants to sell you his "SPECIAL" Holley Modded Carbs. LOL! Tom V.
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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. |
#22
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Anyone get one?
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1965 Pontiac GTO 455/469 w/ #48 Heads, '65 Tri-Power 9.25:1 CR Stump Puller Cam Muncie M22W 1st-2.56 2nd-1.75 3rd-1.37 4th-1.00 3.55 Rear Differential Front: 225/60R15 Height: 25.6" Rear: 275/60R15 Height: 28" Last edited by wbnapier; 07-19-2022 at 01:32 AM. |
#23
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You can get Holley 2-BBls (mechanical carbs in all 3 positions) that flow 625 (2-BBL)
cfm. The BG intake was a good intake once the casting issues were worked out but still needed to be ported by Dave Wilcox to get any real flow. Troy has been playing with the Holley stuff for years as an alternative carb system for GM applications and as a OEM intake upgrade on the Ford Applications. Tom V. The single plane intakes mounting dual and triple carbs (OFFY) were a lot better vs the "E" Intakes based on my testing.
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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. Last edited by Tom Vaught; 07-19-2022 at 05:25 PM. |
#24
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That's been talked about for years. They used to offer porting a tripower intake for close to a grand and porting for end carbs. Haven't checked lately.
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#25
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Meant to reply to 433lemans H&M post.
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#26
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I tried emailing Dave about the intake, never heard back. Maybe I'll call next week. Has anyone done extensive porting on that repop aluminum tripower intake?
I also saw this, and I plan to talk to this guy and learn more. Been trying to go a little different route and maybe this could work. https://www.ebay.com/itm/16591286669...&segname=11051
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1967 GTO 416 5-spd streetcar 11's on HP low 10's 150 shot 1965 GTO 10-71 Littlefield high-helix retro/Bird (untuned) 8.44 @164 3500+lbs 10.5W's SOLD! 1964 421 GP-Sold 6.0 cert. Fiat bodied altered blown alcohol Pontiac IAII-Sold |
#27
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That would certainly fit the “different” bill nicely. I’ve never seen anything like it!
Murf |
#28
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Quote:
My take is this isn’t even a working setup and what’s there could be duplicated for about half the price. Those 40mm Weber type carbs (ad states type, so not real Webers which would be offshore clones, the latest versions work fine actually) aren’t anything special and likely don’t flow any more than a modified Rochester. Of course the intake would need to be heavily modified to accept that style of carb, a simple adapter plate isn’t all it takes. All bling for way too much money. Those nice velocity stacks are what draw you in. The air cleaner is just the lid with a filter stuck underneath sitting on top of the stacks, what an attempt at deception. This same exact eBay ad was discussed in the Lobby a while back: https://forums.maxperformanceinc.com...d.php?t=862574
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
The Following User Says Thank You to b-man For This Useful Post: | ||
#29
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Untouched intake with Webers loosely laid on top?
It's barely even a concept, zero effort mockup. |
#30
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The carbs are not the earlier "TRUE WEBER 48mm" Italian carbs.
The carbs look like the later "Spanish Made" carbs where they screwed up the "WEBER" calibrations. Tom V.
__________________
"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. |
#31
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I've been messaging him, I have his number and I'll call him. I already asked about the fact they were not bolted. He said he has the adapter and the ad states he has linkage for it too. I'm not sure why he wouldn't show it complete.
Thanks for posting the other thread, I tried searching it and figured there had to be a discussion. Anyhow, I'll see what he has to say. Who is a Weber guru I can talk to? Seems if these would work for with an open plenum it would change my thought of going IR EFI. I like my solid cam and EFI won't. I wouldn't run that air cleaner either, they make screens and filters for the stacks. Why cover it up. I'd like to use these on an open plenum intake which is why I posted this. Tom V, your thoughts? Always appreciate your input.
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1967 GTO 416 5-spd streetcar 11's on HP low 10's 150 shot 1965 GTO 10-71 Littlefield high-helix retro/Bird (untuned) 8.44 @164 3500+lbs 10.5W's SOLD! 1964 421 GP-Sold 6.0 cert. Fiat bodied altered blown alcohol Pontiac IAII-Sold |
#32
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The common plenum would (in my mind) make the reversion effect of my 108 LSA solid less of an issue. The open plenum tri power would match my power band better too. ...I would think.
__________________
1967 GTO 416 5-spd streetcar 11's on HP low 10's 150 shot 1965 GTO 10-71 Littlefield high-helix retro/Bird (untuned) 8.44 @164 3500+lbs 10.5W's SOLD! 1964 421 GP-Sold 6.0 cert. Fiat bodied altered blown alcohol Pontiac IAII-Sold |
#33
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Why Weber carbs? Why not a single plane intake with Rochester Tri-Power carbs? I've read so many times through the years that the stock Tri-Power intake is the limiting factor with Pontiac Tri-Powers.
The carbs alone are capable of 800-1000 cfm. So, why Webers?
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BONESTOCK GOATS '64 GTO Tripower Hardtop (Wife's Car) '64 GTO Tripower Post Coupe (My Car) '99 Bonneville SE Sedan |
#34
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Quote:
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#35
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I'll be having my extra stock '65 Tri-power I just purchased and sent it out for port / gasket matching and general porting. The company uses a new process I had never heard of called: https://www.extrudehoneafm.com/
Check out thre videos, it's pretty cool.
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1965 Pontiac GTO 455/469 w/ #48 Heads, '65 Tri-Power 9.25:1 CR Stump Puller Cam Muncie M22W 1st-2.56 2nd-1.75 3rd-1.37 4th-1.00 3.55 Rear Differential Front: 225/60R15 Height: 25.6" Rear: 275/60R15 Height: 28" |
#36
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Dick, the main reason is for something unique 7nder the hood. I saw your thread regarding the repop intake with your RAIV heads, nice work! But also a lot of work. I didn't realize those intakes had so much core shift. Is there more than one manufacturer on them?
I have not been able to reach Dave at H&M Extrude honing...I forgot about that process.. I saw this on Butlers site, has anyone seen this intake??
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1967 GTO 416 5-spd streetcar 11's on HP low 10's 150 shot 1965 GTO 10-71 Littlefield high-helix retro/Bird (untuned) 8.44 @164 3500+lbs 10.5W's SOLD! 1964 421 GP-Sold 6.0 cert. Fiat bodied altered blown alcohol Pontiac IAII-Sold |
#37
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Extrude honing is a lot of expense for marginal gains. Putting that money towards professional porting work would be a better use of funds.
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
#38
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Quote:
__________________
1965 Pontiac GTO 455/469 w/ #48 Heads, '65 Tri-Power 9.25:1 CR Stump Puller Cam Muncie M22W 1st-2.56 2nd-1.75 3rd-1.37 4th-1.00 3.55 Rear Differential Front: 225/60R15 Height: 25.6" Rear: 275/60R15 Height: 28" |
#39
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Extrude honing has been around since the 80s, maybe even earlier.
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#40
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Quote:
Most Weber Carbs (48mm Downdraft & 45 mm Sidedraft) look cool and work great on small CID engines (for the "WOW" effect). Ford tried Weber carbs on their 289 CID Le Mans engines back in the early 1960s. When they decided to move to the 427 Side Oiler Engines, the WEBER Carbs were way too small for the application. A Friend, Mose Nowland at SVO, had a 58mm experimental Weber carb on his desk. He said a set of them was still too small for the 427 engines. So except for the cool factor, no Weber carbs are worth mounting on a 400/421/428/455 Pontiac engine, except for a Car Show engine. I have a full set of the "good" 48mm Weber Carbs I might mount on my 9.5" deck height (366 cid) All Pontiac block. But again it would be a road race type application on a track. And a Road Race car is the last on the list of cars I were put together in my lifetime. For other people, racing a road race Pontiac in SCCA events would be very cool. But not with Webers on it. Tom V.
__________________
"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. |
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