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#1
02-22-2020, 10:24 AM
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Performance update
Well, still moving the chains bit by bit.
Nothing much good with this particular slip as I was spinning out of the hole but it is what it is.
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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 |
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#2
02-22-2020, 10:29 AM
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Very nice. If you could get 50lbs out of it, you'd be close to a 10.99.
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#3
02-22-2020, 11:01 AM
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Hey Mike, there is a 10.?? in there I am sure. A little better 60' time will do the trick, IMHO. Keep up the good work.
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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. 10.68 @ 126 so far... no tuning yet. |
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#4
02-22-2020, 11:13 AM
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I think it was there for the taking, unfortunately the track and my worn out tires wouldn’t allow it
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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 |
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#5
02-22-2020, 11:56 AM
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You are killing it in a heavy car, congrats. They kick you out for no cage yet?
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Chris D 69 GTO Liberty Blue/dark blue 467, 850 Holley, T2, Edelbrock Dport 310cfm w Ram Air manifolds, HFT 245/251D .561/.594L, T400, 9" w 3.50s 3905lbs 11.59@ 114, 1.57/ 60' |
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#6
02-22-2020, 11:59 AM
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Yep, killin’ it.
Unbelievable man!
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#7
02-22-2020, 12:31 PM
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Either get the 1.50 60foot, with off-idle launch technique ( to let the converter multiply TQ) maybe a deep stage?
or practice shift 1-2 & 2-3 earlier in rpm ( like 5200-5300) get the 123 MPH by getting into 3rd sooner, and manage the air getting into the Carb (no air filter, 1050 Carb, anything to get the 123 mph) |
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#8
02-22-2020, 12:48 PM
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improving the 60ft will get you well into the 10s. a set of slicks or (sticky) tires will do the trick
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1970 firebird, 468, e heads, |
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#9
02-22-2020, 01:41 PM
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Good et for the weight. New tires for sure will help. Once you have full traction you can play with launch technique and or tune to whittle the 60 foot down.
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 466 Mike Voycey shortblock, 310cfm SD KRE heads, SD "OF 2.0 cam", torker 2 373 gears 3200 Continental Convertor best et 10.679/127.5/1.533 60ft 308 gears best et 10.76/125.64/1.5471 |
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#10
02-22-2020, 02:04 PM
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The car normally 60’s in the 1.53-1.54 range with some degree of traction
Not in the cards that particular time out. Always a hill to climb!
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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 |
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#11
02-22-2020, 02:38 PM
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Anyone try these yet .... looks like a new tire from Mickey:
https://mickeythompsontires.com/drag...street-r#sizes The old ET street in a radial now? Could be a winner...
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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 |
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#12
02-22-2020, 05:40 PM
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Quote:
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466 Mike Voycey shortblock, 310cfm SD KRE heads, SD "OF 2.0 cam", torker 2 373 gears 3200 Continental Convertor best et 10.679/127.5/1.533 60ft 308 gears best et 10.76/125.64/1.5471 |
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#13
02-23-2020, 10:31 AM
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Nice! Keep after it!
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Jim Moshier 1971 Grand Prix 462ci SD Performance 6x heads 1962 Catalina 389 1968 Firebird 400-455 I haven't decided "If we ever forget that we're one nation under GOD, then we will be a nation gone under." - Ronald Reagan |
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#14
02-23-2020, 11:52 AM
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I run 255/60-15 Street R on my 68. Usually 17-19 lbs. Not as good as good as my old 9x14x28 ET Drags but I wanted to try something different. They don't hold torque on launch like slicks did, and not as consistent. I won't drive them on the street. But my 65 Tempest 400/4sp loves them. A lot of racers up here are running MT Street SS both to the track and on it.
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#15
02-23-2020, 12:31 PM
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Quote:
__________________
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 |
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#16
02-23-2020, 01:19 PM
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I wanted to try the 275 R tires but with the car sitting as low as it does clearance is an issue. Ended up using the Hoosier 275 DR as it’s a little shorter and still has a full 10” tread. These are my first drag radial and there’s not enough use yet to get a real feel for them but I like them so far. Drive much better and smoother than the bias Hoosier QTP’s on the street too.
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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 |
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#17
02-23-2020, 01:36 PM
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Quote:
The Mickey ET Street Radial Pro’s are what I’ve been running for 6 seasons. They have been excellent. They are ungodly heavy tho and I’m almost ready to go back to a dedicated slick..... torn I don’t run drag radials on the street anymore as they only last a year or so. Below is my cruise mode tire setup. The dang cobras are actually decent as long as I’m in second gear or higher and above 45mph believe it or not........
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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 Last edited by mchell; 02-23-2020 at 02:26 PM. |
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#18
02-23-2020, 02:23 PM
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Nice looking car!
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#19
02-23-2020, 03:01 PM
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Very nice car. I would think you need a 10" tread for that motor to hook. You mention the weight of the tires, from what I can see in the pic are they mounted on steelies? A lighter wheel would save some weight, don't know if it'd make a difference but your so close to 10's.
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#20
02-23-2020, 03:39 PM
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Quote:
__________________
466 Mike Voycey shortblock, 310cfm SD KRE heads, SD "OF 2.0 cam", torker 2 373 gears 3200 Continental Convertor best et 10.679/127.5/1.533 60ft 308 gears best et 10.76/125.64/1.5471 |
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