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#1
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Hood clearance?
I had a 400 built for my 64 LeMans and am going to use a Performer RPM and Quadrajet on it . My question is anybody using or used this combo and if there are any issues with hood clearance? Thanks
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#2
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Probably yes.
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BONESTOCK GOATS '64 GTO Tripower Hardtop (Wife's Car) '64 GTO Tripower Post Coupe (My Car) '99 Bonneville SE Sedan |
#3
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Hood clearance?
I had that combo on the wife’s 65 for awhile. 1.25” dropbase air cleaner & 14x3 filter. Didn’t hit the hood.
I now have an Allstar deep drop aluminum base @ a 16x4 filter. No issues. I’m not sure if the 64 has any different hood clearance but I would think they are close, if not the same. Murf Sent from my iPhone using Tapatalk Pro |
#4
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Put everything on the engine. Loosely ball up some aluminum foil. Set it on top of the air cleaner. Lower the hood so that the safety latch just touches. Raise the hood and look at the foil ball. Next just engage the safety latch. Check the foil ball. If it is not crushed, put the hood all of the way down. Then check the foil ball. You want at least one inch of clearance between the hood and air cleaner. Things move under the hood when you start romping on it. That minimum of one inch is critical.
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If you built it, drive it. red 62 Tempest total stock restoration. white 62 Tempest modified, 61 389 Tri-Power, and a conventional drive train. |
#5
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One other piece of advice on air cleaner bases... once you have determined the proper drop needed, spend a little extra on a spun aluminum base, not one of the cheap stamped units typically provided with air cleaner kits.
I fought with those things interfering with the accelerator pump arm and other issues. Purchased a 1.5" aluminum drop base, and sooo much nicer! Clears everything on my qjet and holley carbs, and has nice smooth surface for airflow. If you have an earlier Qjet with the large/raised vent tube in front, you will need to drill a hole in either style of base accordingly. I don't have direct experience with your year, but the 66 A body is known for tight hood clearance, and a 1.5" drop base using an RPM manifold and 3" filter was ok. Sent from my SM-G965U using Tapatalk
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68 Firebird-- Street/Strip - 400/461 Eagle Forged Bottom End & Ross Flat top pistons. KRE 325 CFM D port, Ultradyne 263/271 @.050, .4267 lift. Crower Solid roller lifters and 1.65 stainless rockers. Quickfuel 1000 on Torker2 intake and 2" open spacer. Hedman 1.75" headers. TH400 w/brake. Ford 9" w/3.80 gears & 28x9 Hoosier pro bracket drag radial. Best ET: 1.35 60ft, 6.29 @ 107.20 mph, 9.99 @132.33 mph. 3,300 race weight |
#6
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Also on the air cleaner, get one of the ones with the bubble top lid. A flat lid on a big drop can get the top of the lid too close to the carb.
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1967 Firebird 462 580hp/590ftlbs 1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455 Owner/Creator Catfish Motorsports https://www.youtube.com/@CatfishMotorsports |
#7
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I big rule that needs to be followed here is that the cleaner lid needs to be a minimum of 3/4" above the top of the Carbs fuel bowl vent otherwise it will not meter correctly at high air flow rates!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#8
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I know when I raced NMCA Top Stock one guy with a 67 GTO had one and a open scoop and a factory aircleaner pan mated to a drop base that fit that fine.
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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 |
#9
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Quote:
Agree 100% on those cheap steel drop bases. PIA! Murf Sent from my iPhone using Tapatalk Pro |
#10
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If you need a drop consider a Chevy L88 base before you use one of the spun aluminum types. The spun aluminum bases block the bottom 1/2 of the air filter and dont flow as well as the 2” drop L88, and the Chebby part is usually cheaper too.
You can usually fit a 4” filter under the hood with this base and like Steve 25 said make sure you have adequate vent to lid clearance.
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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 |
#11
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been used for past 53 years
whats the problem?
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It is easier to fool a man than it is to convince he has been fooled |
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