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#21
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Torker II is probably not going to cover 340 cfm ports without welding at the top. I assume the Northwind will but never personally seen one. First picture is a Torker II no weld and a 1233 gasket. Trimming to the blue at the top is as far as it can go. Second two show added weld.
Mt 500" has a 268/272 @ 0.050 on a 112 LS and has a rowdy idle but not too bad street driven, a bigger motor it would be milder.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
#22
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On the 535 engine I linked the the best configuration on the dyno used the MODIFIED Torker II intake with an 850-cfm Quick Fuel carburetor. It was better than a Victor intake with a larger, 1,150-cfm Dominator carburetor. But again a 'small' hydraulic roller cam. Dave Bisschop's testing has suggested a Northwind intake tested better than a Victor intake, and note his 535 had a solid roller cam that suggests not much more intake duration than Ken Crocie's 535 combo linked. I say not much more because the exact cam specs are super squirrel information and not listed. And note both used Dave's 345 cfm heads.
"We've dynoed this combo in the past and were basically stuck in the 650-660hp range with a ported Torker II and 1" spacer, the new Northwind looks like it's worth 30-40 hp more and is right there with the Victor and then some for this application." Dave's testing: http://www.sdperformance.com/newsStory.php?newsID=53 . .
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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 |
#23
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Quote:
Another thing to the OP, get a shaft recommended for tight lash for street. Less beating on on those lifters.
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1963 Cat SD Clone (old school) streeter 1964 GTO post coupe, tripower, 4speed (build) 1965 GTO 389 tripower, 4 speed, driver 1966 GTO dragcar 1966 GTO Ragtop 1969 Tempest ET clone street/strip 1969 GTO Judge RA lll, auto 1969 GTO limelight Conv. 4speed go and show (sold) 1970 GP SSJ 1970 GTO barn find..TLB…390 horse?….yeh, 390 1972 GTO 455 HO, 4 speed, (build) 1973 Grand Safari wagon, 700hp stoplight sleeper 525ci DCI & 609ci LM V head builds Last edited by J.C.you; 04-18-2020 at 10:37 AM. |
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#24
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JC,not sure what brand.My failure was with a set of Iskys with lifter bore restricted.I was lucky and caught it by accident.I think for a show car/bracket car you can get away with the solid rollers.With 700 lift and a LOT of street miles I think you REALLY have to watch them.I sometimes drive my cars a 100 miles each way in a day.For a race car they are what you need but for a "true" street car I just dont go there anymore.Again,JMO.Im building another 301 stroker engine right now and have been going crazy of what lifters im going to run.301s have a strange lifter bore,the reason Joe Sherman used solid rollers in my last build.The oil hole is .500 lower than a 400 block,the boss goes .300 lower toward the cam and also the oil hole is like a .500 wide going around the bore..Trying to figure out what hyd roller lifter can really be used in one with 600 plus lift.Tom
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#25
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That will be a nice engine. Spending that much $$ I would spend a few dollars more and put Crower stainless steel roller rockers on it.
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The Following User Says Thank You to 61-63 For This Useful Post: | ||
#26
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68 GTO,3860# Stock Original 400/M-20 Muncie,3.55’s 13.86 @ 100 Old combo: 462 10.75 CR,,SD 330CFM Round Port E's,Old Faithful cam,Jim Hand Continental,3.42's. 1968 Pontiac GTO : 11.114 @ 120.130 MPH New combo: 517 MR-1,10.8 CR,SD 350CFM E's,QFT 950/Northwind,246/252 HR,9.5” 4000 stall,3.42's 636HP/654TQ 1.452 10.603 @ 125.09 http://www.dragtimes.com/Pontiac-GTO...lip-31594.html |
#27
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Opps, thanks for the correction on Dave's cam used.
My point was to agree with your comment regarding the Northwind intake, thus the material presented. .
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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 |
#28
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I'll check...I haven't seen the parts list details yet. Since you're asking, is this a concern or something I should watch out for?
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#29
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Quote:
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#30
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I'm not adverse to adjusting the rockers from time to time. What is your concern with running a solid on the street? Is it the spring pressures?
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#31
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I'll see if it's in the budget. I thank you for the suggestion.
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#32
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Quote:
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1963 Cat SD Clone (old school) streeter 1964 GTO post coupe, tripower, 4speed (build) 1965 GTO 389 tripower, 4 speed, driver 1966 GTO dragcar 1966 GTO Ragtop 1969 Tempest ET clone street/strip 1969 GTO Judge RA lll, auto 1969 GTO limelight Conv. 4speed go and show (sold) 1970 GP SSJ 1970 GTO barn find..TLB…390 horse?….yeh, 390 1972 GTO 455 HO, 4 speed, (build) 1973 Grand Safari wagon, 700hp stoplight sleeper 525ci DCI & 609ci LM V head builds |
#33
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Quote:
Hope this helps.
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"No replacement for displacement!" GTOAA--https://www.gtoaa.org/ |
#34
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I suspect all the major players in the solid roller lifter business have pressure-fed oiling via a small hole straight from the oil gallery relief, down to the roller wheel and bearings. Not a end-all situation but this helps with a supply of lubricating oil where it is needed most. Some with a extra hole for additional high pressure pin oiling, one on each side of the bearing axle. I'm having my Crower solid roller lifters rebuilt and for a small extra charge they are adding the second hole.
Most will suggest that regular maintenance could help avoid problems. As far as maintenance, it is recommend watching the lash. Over time, the valvetrain will settle and the lash will not vary much. If you notice the lash on one or more lifters starts loosening up more than normal, that's when it is typically recommend pulling them out and inspecting them. If you notice play or roughness when working the bearing, send them in for rebuilding. .
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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 |
#35
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"The amount of lash has no effect. It's the velocity at the lash point that hammers the valvetrain. A .030" clearance ramp doesn't have to be any harder on the valvetrain then a .010" ramp. Clearance is clearance."
Mike Jones Jones Cam Designs Source : https://www.speed-talk.com/forum/viewtopic.php?t=11597 ( Information provided in this post does not represent any endorsement. And unless specified it is not based on personal experience and is offered for general interest only ) .
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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 |
#36
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And to muddy the water further regarding high pressure pin oiling on solid roller lifters. Make sure you understand the potential of the lifters not having their oil band exposed to the lifter bore feed holes 100 percent of the time under certain circumstances. I know the base circle of the cam has a impact as does the lifter oil band location and/or width for sufficient oil feed for 360 degree's of rotation.
It is up to the builder to inspect for sufficient oil feed for 360 degree's of rotation, IF DESIRED. Some suggest no issue with that situation, including the opinion of Crower when I called them years ago regarding the subject on a street application. My suggestion would be to talk to Mark at Luhn Performance on the subject. If interested in the subject here is a Video with Crower solid roller lifters used in conjunction with a .4300" lobe lift solid roller cam in a Pontiac factory block. On the base circle the lifters edge orifice oiling hole is not exposed to the oil band. Until the lifters start to move upward the HIPPO oiling hole located within the oil band does not get 100 percent oiling. https://www.youtube.com/watch?v=JoU_hUgq4O0&app=desktop .
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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 |
#37
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Wow guys. Thanks very much. You have me very seriously rethinking the mechanical set up.
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#38
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Side note- the information in my post number 36 here was just for general information. That is why I stated check it "IF DESIRED". Consider the untold number of people running solid roller lifters with thousands and thousands of miles on the street with that very situation and with NO reported issue with it.
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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 |
#39
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Thanks for the photos. Does anyone sell these already modified for this application? If not, where did you get yours done?
Thank you!
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#40
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hood clearance
I put a Northwind on a 505" in a 67 Firebird. No hood clearance issues
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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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