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#21
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That 400 is running pretty darned good! I’ll go against the grain and say that some added cubes could net you some marginal ET gains......Possibly enough to keep you under the bar rule no-matter the weather. Yes, you may have to make some changes to accommodate the added torque and other engine characteristics. Your tuning ability is already very good given your current combos performance, I would guess you would transfer that to a new combo without trouble to maximize its performance. Could be a building block for your future goal of mid to lower 10’s I am in the same boat so to speak......street car, to cage or not? Right this second I’m comfortable with what I have, very friendly on the street and somewhat respectable at the track.... Mike
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71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile |
#22
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Put a rollbar in and swing for mid 10s instead of wondering if you will be kicked off the track running mid 11s..
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
#23
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Mike, it has been a while! I wish the old BPOC races were still going on. And your car is running very well. Not sure where this deal will go but it would be fun to have a Pontiac running in the 10s at our track where Fords and Chevys are a dime a dozen. Gary H. who has the 62 Lemans comes over from time to time and that is a good thing. Also, last test and tune he and a lot of the guys in their club brought over a number of GTOs and Firebirds. I have never seen that many at our track. It was a good time.
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69 Bird w/1970 400 block(409 cubes), #64 heads, hyd. roller, Q-jet by Jeff E., original interior, ps, pdb, th350, and 3.73 gears. Pump gas, street driven muscle. 3800 lbs. race weight. Best, 11.39 @118, my son's car. 79 T/A w/463, Scat crank, Eagle rods, Icon pistons, Lunati solid roller, 262/270, KRE 325 heads,Northwind intake, QF950 carb, full interior, ps, pdb, th350, and 3.73 gears. Pump gas, 3650 lbs. race weight. 10.72 @ 126 so far... no tuning yet. Last edited by prostreet64; 02-16-2020 at 10:09 PM. |
#24
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I agree with this 100%.
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#25
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There's nothing more disappointing then added and spending what motor changes it takes to add another 100 hp needed for your goals, yet have a chassis that can't apply it to the ground, be it street or track!
According to the info you posted on the car's performance, your current motor is only making 333 or so at the flywheel, so you have a bunch more power locked up there somewhere to release! By my math if you where using all of that 250 Intake cfm that your heads have you should be making 348 hp at the flywheel, so your not even utilizing what you have now! Some chassis dyno time would be the first thing I would spend hard earned money on and put the motor chew the fat / bench racing stuff aside for now.
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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! |
#26
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118mph at 3800lbs is only 333hp according to your calculations? Fwiw, Moroso slide rule shows 480hp |
#27
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Yeah that math is very odd.
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Be carefull of the feet you step on today.They may be attached to the a$$ you kiss tomorrow. |
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