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#21
07-10-2005, 05:29 AM
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The best runs have been shifting at 5600rpm's. Even so, for bracket racing I shift at 5000rpm's, no need to grind up the engine and the car still runs well into the 11's with the lower shift points. It also leaves me a bit of room if I happen to slip just a bit on the launch. I can buzz the engine a bit harder and make up the ET in a close race.....Cliff
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#22
07-10-2005, 07:27 AM
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There have been plenty of discussions regarding fuel starvation which seem to incorporate all kinds of mechanical/electric pump combinations, changes in fuel line sizes and carb changes. In the end, sumping the tank fixes the problem.
Just wondering...before considering anything else, should one try sumping the tank and sticking with the factory fuel lines and high volume mechnical pump. Is that going to provide enough fuel for 11 to 12 second quarter mile potential? Mike J |
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#23
07-11-2005, 08:18 PM
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Good question, but I'm not sure if sumping the tank alone would work with some of the restrictive stock fuel lines I've seen? It still makes sense to let the hard launch situation force feed a rear mounted electric pump, then push the fuel forward to the regulator/carburetor.
Knowing what I know now, I would sump the tank first if I had a vehicle with fuel delivery issues on hard runs. No matter what I did to my fuel system AFTER the stock pick-up, it made very little difference. I had even removed the sock from the pick-up and modified it a bit further back in the tank, didn't work.....Cliff
__________________
If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#24
07-12-2005, 04:59 AM
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Top of the Mornin' Cliff, What do think...
K hanger .043 or .045 rod also I was thinking turning in a little on the APT from you original setting? I ran on the dyno with K hanger and .043 last time...it ran just under lean with the sniffer in the tail pipe |
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#25
07-12-2005, 08:03 PM
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hey cliff me and my holley will see you in norwalk!!!
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#26
07-12-2005, 09:21 PM
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Guy, I'd run the hanger as delivered and rods around .040-.041" to start out, only lean it up if needed.
Rich, did you get the other engine installed yet? You gonna change that 10.74 to a 12.74? It's gonna be quite a change this year having to chase your RACE car with my "daily driver".....LOL....Cliff
__________________
If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#27
07-13-2005, 08:29 PM
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hey cliff its been so long i cant remember what its like to drive a slow car,tell me what its like, you know all about it,lol rich
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#28
07-14-2005, 07:07 PM
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Rich, it'll be interesting to see what happens to your race car taking over 200 hp out of the engine? You'll be able to eat a couple of Big Mac's before you get to the end of the track. If you try real hard you'll be able to woof down an order of fries with em....lol....Cliff
__________________
If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#29
07-14-2005, 07:26 PM
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Hey...
Two Q-Jets on a homebrew intake.. No issues, gREAT STREET CAR.. 1931 fORD, 455 POWERED WITH 4:10S pONTIAC sLIM |
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#30
07-15-2005, 11:23 AM
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Hey, where did you get "PONTIAC" engraved on your M/T valve covers?
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Badder than old King Kong And meaner than a junkyard dog -Jim Croce |
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#31
07-15-2005, 01:23 PM
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Hey
You like that eh? Let me tell ya 1st off that up here in Maine its either Cheebie or John Deere powered. So I'm run'n this here 31 Ford rat rod with the Poncho power... get'n sick of "what size Chevy is that?" Anyway what I did waz to go poke'n around in the local boneyard (not much to do up here either) Found a couple of mid 80s Pontiacs, carefully took the emblems off, (outside body emblems) Get rid of all the old "stickem" on the back, see your buddy at the body shop an get some new "stickem", put on back of emblem an put um where ya want, razor blade off x-cess and thats that.. Looks pretty good.. Now folks ask "what size Pontiac?". Gives me a better feel'n Pontiac Slim |
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#32
07-15-2005, 01:29 PM
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Looks great! I have the exact same valve covers . . .
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Badder than old King Kong And meaner than a junkyard dog -Jim Croce |
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#33
07-17-2005, 07:04 AM
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Pontiac Slim, care to provide any specifics on the "homebrew" intake?.....thanks....Cliff
__________________
If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#34
07-17-2005, 07:34 AM
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JMO
A great holley will not run properly with a poor fuel system. I have seen a couple of engine combinations where the dual float bowl 4 barrel carb would not keep up at 1100 ft out. Going to a three carb deal (one extra float bowl) "fixed" the marginal fuel system issue. Better to do the fuel system right and run the single Q-Jet or Holley in most cases. Brady and others have picked up 3 tenths on quick (10 second or better) cars with the right fuel system/ tank mods/ fuel cell. 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. |
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#35
07-17-2005, 04:38 PM
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">A great holley will not run properly with a poor fuel system. </div></BLOCKQUOTE>
Tom, a great q-jet runs even worse!! Are you planning on being at Norwalk for the Tri Power Nat's?.....Cliff
__________________
If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#36
07-17-2005, 04:59 PM
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Cliff R:
Pontiac Slim, care to provide any specifics on the "homebrew" intake?.....thanks....Cliff </div></BLOCKQUOTE> Hey.. e-mail me @ imodtweety@prexar.com Pontiac Slim |
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#37
07-18-2005, 08:13 AM
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by 455firebird1969:
I am not going to the CC Nat's so I will not be doing the dyno run. But I do run a Q-jet, and I will be running the POCI event in Atlanta next week. Its the 1/4 mile dyno, best one in my opinion. I do agree with you on the visual apperance of a Q-jet that runs the numbers... </div></BLOCKQUOTE> What fuel system do you use to supply your Q-Jet?
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Badder than old King Kong And meaner than a junkyard dog -Jim Croce |
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