|
04-08-2018 | #1 |
Join Date: Feb 2017
Location: Menifee
Posts: 50
|
Went to the drag strip
Took my 91 to Fontana 1/4 mile drag racing track 2 times in the last month. Best of 12.5 @ 113. Wondering if 4.10s will help me drop some time?
Also what's best some has gotten these things to 60ft on regular street tires? I was having a heck of a time trying to get this car to 60ft |
04-08-2018 | #2 | |
Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,040
|
Re: Went to the drag strip
Quote:
As to 60 ft times, Marc always said the best way to get off the line quickly was to bog it a bit at first, launching around 1600-2000 rpm as I recall. I'm sure there will be other sound opinions on that here as well.--Bob
__________________
2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" Last edited by WARP TEN; 04-08-2018 at 12:50 PM. |
|
04-10-2018 | #3 | |
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
|
Re: Went to the drag strip
Quote:
Bob, Reading many of your recent posts, I’m starting to get the impression you are really pinning to get back into a ZR-1. C7 Z06’s like yours are amazing cars as are the 2 C6 Z51’s I’ve had since my first ZR-1. They just seem to lack the soul that the ZR-1 has. One of those things that’s hard to quantify. Do you think you will ever do it? H
__________________
90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
|
04-10-2018 | #4 |
Join Date: Jul 2005
Location: Jupiter, Fl.
Posts: 815
|
Re: Went to the drag strip
Blackbelt- I'd say you were doing pretty good. Others may differ, but I think at least 4.10 gears is the way to go in the 1/4 mi. (and on the street).
Your thinking on drag radials, gears, light flywheel is correct. It will give you at least half a second in the quarter with the mods you already have. The thinking that you can "cut a better time using stock gears, and only use three gears in the quarter" is incorrect. Did you ever see or hear of a drag racer with a four speed put a lower numerical rear gear in, so that he only had to shift twice at the drag strip to "save time". That's silly. Dissect your best numbers. #1 - You've cut a 2.0 60ft. on street tires, so you know how to drive. #2 - Your car will trap at 116mph, which means it has around 425hp. at the crank. #3 - Your best run of 12.50 with street tires and stock gears tells me that with the above equipment, and practice to put these numbers together you're in the elevens. Your porting is ok, but the heads are where the power is. (witness Haibeck's 510hp- 350c.i. cars and Pete "the Greek", banging on the tens with a stock block 350 c.i. car.) It's the way this puppy breathes. I've never cut an eleven second time, and that's mostly because my engine is stock, no porting, only bolt-ons (see below). Good Luck, and wait for a cool night. They love the cold air.
__________________
"It's about the car, not the people." 1991 ZR-1 White/Black #1236 (Owner since 1994). Stock engine with bolt-ons: Hurst shifter,"Forced Air" intake, Coplon duct, Bee Cool Radiator, Demon coils, Jeal prom, Watson headers, X pipe, 3" B&B's, Rippie flywheel, 4:10 gears, A molds, Toyo Proxes-R888's 12.06@117mph. 1.76 60ft. |
04-11-2018 | #5 | |
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
|
Re: Went to the drag strip
Quote:
Or motors were comparable; both in the "510" range, but you had pulled about 2 car lengths @ the quarter. BUT! That said, you were loosing ground quickly in the second 1/4 mile (WANNAGOFAST) 1/2 mi. run. I ended the 1/2 mile at ~144.25 (IIRC) in 4th gear, and you crossed the 1/2 mile at 138.xx as I recall. (However, you did had enough lead to finish ahead of me at the half mile mark. I concluded from that, that beyond 1/4 mile the taller gears take over. And, Pete's numbers seemed to agree. Ami's car has 4.10s and cams. There's no doubt it rips around the highways and byways with more authority. But, I always feel I need to be shifting (again, and again) or else constantly winding it out. I'm not as hot to trot for 410s as I once was. But, maybe 373s or 390s???
__________________
Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
|
04-11-2018 | #6 | |
Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,040
|
Re: Went to the drag strip
Quote:
__________________
2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" Last edited by WARP TEN; 04-11-2018 at 11:52 AM. |
|
04-11-2018 | #7 | |
Join Date: Feb 2016
Location: Carterville Illinois
Posts: 845
|
Re: Went to the drag strip
Quote:
Sent from my XT1585 using Tapatalk |
|
04-11-2018 | #8 |
Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,040
|
Re: Went to the drag strip
Sorry, can't sell mine--Corvettes don't do too well in a foot of snow. If I sold my wife's there probably would be more room as I would very quickly find myself single. But with lots of extra expenses. --Bob
__________________
2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" |
04-08-2018 | #9 |
Join Date: Feb 2017
Location: Menifee
Posts: 50
|
Re: Went to the drag strip
Thanks Bob. I am happy with the performance of it. I'm thinking 4.10s, aluminum flywheel and some drag radials and I can get at least some 12.3s out of her if not a little more. One of the runs I trapped 116 but it was slower run.
Car has porting, headers, exhaust and chip. Would love to get heads ported one day. For what it is it runs really strong. Best 60 foot I could get was 2.0 I really think street drag radial would allow me to better that and get faster runs as she sits. I'll try soon. |
04-08-2018 | #10 |
Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
|
Re: Went to the drag strip
My experience in my 2006 Z-51 was that MT Drag Radials took almost a second off my 1/4 mile time. Best I could do putting 428 HP to the pavement on street tires was 12.85 at 117. Could never get below 1.95 60 foot time. Changed to MT's and immediately ran a 12.02 123 and 1.72 60 foot. Ran 17 lbs in the MT's. Six speed manual.
Sent from my XT1585 using ZR-1 Net Registry mobile app |
|
|