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#1
04-26-2005, 10:39 PM
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I currently have a 67 Le Mans @ 3800 lbs w/ driver and fuel w/ the following combo: 455 w/ 400 crank, stock rods, TRW's, cleaned up 6x heads, Holley Street Dominator, old 930 Holley 3 barrel, .525/.540 Comp Cam solid, Hooker 1 5/8 headers, I believe. 9.5 to 1. Turbo 400, 12 bolt w/ 4.11's. I would like to upgrade the iron heads w/ aluminum, as well as step up the cam, and possibly the intake and carb combo. 91 octane, Track car that sees weekend street duty...
Suggestions? Thanks in advance...
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67 Le Mans, 3800lbs, pump gas, iron heads, 11's on the motor, ???'s on the juice. |
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#2
04-26-2005, 10:39 PM
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I currently have a 67 Le Mans @ 3800 lbs w/ driver and fuel w/ the following combo: 455 w/ 400 crank, stock rods, TRW's, cleaned up 6x heads, Holley Street Dominator, old 930 Holley 3 barrel, .525/.540 Comp Cam solid, Hooker 1 5/8 headers, I believe. 9.5 to 1. Turbo 400, 12 bolt w/ 4.11's. I would like to upgrade the iron heads w/ aluminum, as well as step up the cam, and possibly the intake and carb combo. 91 octane, Track car that sees weekend street duty...
Suggestions? Thanks in advance...
__________________
67 Le Mans, 3800lbs, pump gas, iron heads, 11's on the motor, ???'s on the juice. |
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#3
04-27-2005, 03:28 AM
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455 w/400 crank might be your biggest problem!
 Do you mean 400 w/455 crank?
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Darin '64 Bonneville Wagon (sold) 69 Lemans-All motor (sold) 9.81 @ 136.39MPH |
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#4
04-27-2005, 04:22 AM
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...11's with a Pump Gas 400 motor. Don't change a thing.
What 1/4mile tire diameter? Full exhaust? What Total Timing Advance???? What Rocker Arm ratio? Change only 1 item & measure the track result. No juice for you...it will bust. HIS
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12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
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#5
04-27-2005, 06:00 AM
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I agree with H-I-S, if you are running hi 11's with 413ci, you've got that thing dialled in pretty good. If you decide to do E-heads you'll pickup from the loss of weight. To see any real change do some port on them, get a bigger intake and put a little more gear 4.30. You'll probably spin it a little higher. Watch out those rods are scary above 5700.
Or you could enjoy what you got and save to build a complete new big combo, Not just cubes but induction with a solid bottom end. |
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#6
04-27-2005, 06:47 AM
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A little larger primary header would help. I used the 1 5/8 Hookers for 2 seasons then went to 2 inch Hedmans and picked up 3 tenths and 4 mph.
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fasteddy |
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#7
04-27-2005, 06:57 AM
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Fast Eddy, I have the 1 5/8 inch headers with 2 1/2 exhaust. My combo: 461, 16 heads ported to flow 250, 274XE, 800 dp, 9.4 comp, RPM intake, 400 th with 10" 3.3k stall, and 3.25s. I am going to upgrade to bigger headers (1 3/4" or 2") and 3" X-Pipe to the 2 1/2" mufflers. What is your combo like? I am interested to see how much I would pick up.
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GJN 1968 Firebird 400 461 3,580 LBs 3.2k Stall 3.25 1.657 - 60' 11.637 @ 115.45 http://www.youtube.com/watch?v=dEqzw...e=user&search= |
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#8
04-27-2005, 07:32 AM
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lol, it was late last night...
It is a 400 block w/ a cut down 455 crank. H.I.S., 28x10's, 3 1/2 Flowmasters that dump right before the axle, 1.65 HS's
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67 Le Mans, 3800lbs, pump gas, iron heads, 11's on the motor, ???'s on the juice. |
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#9
04-27-2005, 11:27 AM
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Step up to a 1 3/4" or 1 7/8" header primary dia. Othwerwise, I leave it alone until you up the cam and heads.
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Have A Great Day |
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