|
Author
|
Topic: 351C - 430 gears/ street/strip.
|
Built351c
Journeyman Posts: 96
From: Big Lake, MN
Registered: Dec 2001
|
posted 01-02-2005 10:27 PM
  
I am thinking of pulling out my extra 9inch rearend and installing 430 gears and a spool for the drag strip then reinstalling my 389 trac-Loc when I want to drive it on the street or to shows. Any one else driving around with 430 gears? Did it make a big improvement on your times?
Current setup and times: (sorry kind of long)
The cam was a solid roller Lunati cam with these spec's:
Lift at valve
.650 In. and .650 Ex. Duration at .050 Tappet lift
260 In. and 268 Ex. Advertised Duration
293 In. and 307 Ex. Valve Adjustment
.026 In. and .026 Ex. 108 Lobe separation 351 4v 1970 closed chamber with a mild clean up flowed these numbers.
INTAKE
.100-70cfm
.200-132.8 cfm
.300-192.6 cfm
.400-242.8 cfm
.500-278.4 cfm
.600-293.0 cfm
.700-301.0 cfm
.800-301.0 cfm EXHAUST
.100-56.6 cfm
.200-103.6 cfm
.300-143.5 cfm
.400-173.9 cfm
.500-195.3 cfm
.600-203.5 cfm
.700-206.6 cfm
.800-208.5 cfm Rest of the build is as follows: 1970 351c .20 overbore
11:3 compression.
2- bolt mains studded with ARP Main stud kit
Blueprinted, balanced
Linehone mains
Index block and Torque Hone block with deck plates
Shotpeen and Resize rods and install ARP bolts
Hone Rods for full floating pins
Drill rods for pin oiling
Static and Spin Balance
Prep Crank
Polish & Chamfer crank
Grind Crank .020-.020
File fit Z-Gap Rings
Lunati Custom Light Weight Pistions
Lunati Solid Roller Cam ( Specs in above post) 1970 Closed chamber heads
Hardened Alloy Valve Guides
Hardened Exhaust Seats
Stainless 2.190 Intakes Valves
Stainless 1.750 Exhaust Valves
11/32 Full Bronze valve guides
.030 Hardened Lunati shims
11/32x.500 Postive teflon valve seals
Vasco Jet Roller springs
Lunati Titanium Retainers
Lunati Spring cups
Lunati Machined 10 degree Locks
ARP Screw in rocker studs
Manley Guide Plates 3/8
Lunati Roller rockers 1.73
Lunati stud poly locks
Lunati pro-series push rods Carb - Mighty Demon 850
1 inch spacer 4 hole under carb.
Intake - Holley strip Dominator
Headers - Hooker supercomp 1 7/8 3inch duel exhaust with X-pipe and Dynomax Ultra flow mufflers. Running a C4 with a 4000 Stall - G.E.R Brand. Ford 9 inch Traction Loc. 3.89 Gears 15 inch Rim with P275/50-15 M&H Racemaster Dot Muscle car tires. R/T ....486
60' ...2.065
330 ...5.512
1/8 ...8.302
MPH ...89.01
1000...10.695
1/4 ...12.747
MPH ...109.15 R/T ....302
60' ...2.048
330 ...5.500
1/8 ...8.286
MPH ...88.61
1000...10.678
1/4 ...12.727
MPH ...109.54 R/T ....260
60' ...2.127
330 ...5.586
1/8 ...8.342
MPH ...90.50
1000...10.717
1/4 ...12.744
MPH ...110.68 Sept 25th
R/T .....152
60' ...2.016
330 ...5.391
1/8 ...8.132
MPH ...90.50
1000...10.486
1/4 ...12.501
MPH ...111.13 R/T .....089
60' ...2.086
330 ...5.481
1/8 ...8.213
MPH ...90.69
1000...10.559
1/4 ...12.563
MPH ...112.03 R/T .....104
60' ...2.075
330 ...5.447
1/8 ...8.170
MPH ...91.11
1000...10.512
1/4 ...12.518
MPH ...111.70
IP: Logged |
7DMACH1
Gearhead Posts: 2359
From: PHILA. PA.
Registered: Feb 2001
|
posted 01-03-2005 12:44 AM
I've been driving my 408c on the street and the track with 4:30's for years. Love em. ------------------
PHOTO ALBUMS http://community.webshots.com/user/7dmach1
CRUISE NIGHT WEB SITE http://www.geocities.com/phillycruisenite/
CAR SHOWS AND OTHER EVENTS http://www.delvalracing.net/Forums/index.php?act=calendar
IP: Logged |
kid vishus
Gearhead Posts: 6098
From: middle of NC
Registered: Oct 2000
|
posted 01-03-2005 07:34 AM
The one thing I see that would make the biggest improvement on your times would be too ditch the crappy GER convertor.Otherwise, if you are going to set up a dedicated race pumpkin, why not go to a 4.56, or a 4.71 ratio?
IP: Logged |
Ryan Wilke
Gearhead Posts: 2060
From: Stanton, Michigan 49707
Registered: Oct 2000
|
posted 01-03-2005 09:58 AM
More gear isn't going to help if you're still limited with traction...... IF you're truly looking to improve your times, you need to improve getting the HP that you're making to the ground. It's obvious that your chassis isn't getting it there now. What are you doing for traction control?
With an average of 2.1's at the 60' mark, you need some help in that dept. However, since this is also used as a street car, there will always be a compromise between street manners vs. straight-line performance. Good Luck!
Ryan 
IP: Logged |
kid vishus
Gearhead Posts: 6098
From: middle of NC
Registered: Oct 2000
|
posted 01-03-2005 10:22 AM
quote:
Originally posted by Ryan Wilke:
More gear isn't going to help if you're still limited with traction......
Oops, I never saw the pathetic lack of traction as proven by the terrible 60' times. It needs slicks, plain and simple. Even slicks with slapper bars would be a major improvement.
IP: Logged |
n2oMike
Gearhead Posts: 2419
From: Spencer, WV
Registered: Jan 2001
|
posted 01-03-2005 11:21 AM
Slicks, a good 8" converter and the 4.30 gear will do WONDERS for that car.Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
IP: Logged |
bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
|
posted 01-03-2005 12:14 PM
That's a pretty healthy cam for a street/strip setup. Kid Vishus has the right idea. If you want to wake that motor up you're gonna have to get serious with the stall and gears. 2 second 60'times is pretty pitiful for such a nice motor. Are you bogging off the line or just blowing the tires off? ------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank, rods and girdle, TFS alum. heads, Stealth 8020 intake, Xtreme 268 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.50 @ 116 mph (7.33 @ 93 mph)daily driver!
DanH
IP: Logged |
BattlestarOne
Gearhead Posts: 247
From: Gettysburg PA USA
Registered: Dec 2004
|
posted 01-03-2005 12:45 PM
Not bustin' on ya here.......just for comparison purposes........My 60 Edsel, about 4000 lbs, 390 with stock Cruise-O, 4.11 traction lock, and 255/70-15 BFG Radial T/As pulls 2.0 60s. You need some bite! As far as street driving with 4.30s I have them in my 63 Galaxie, but I have 30" tires. It's okay for "street" but I wouldn't want to do cross country.
IP: Logged |
n2oMike
Gearhead Posts: 2419
From: Spencer, WV
Registered: Jan 2001
|
posted 01-03-2005 02:23 PM
What is your shift point? What kind of tires and traction does the car have now? If you are not spinning it 7500+ rpm, it would run better with a smaller camshaft... at least 10 degrees smaller @ 0.050" You're going to need a converter that stalls at least 5000 rpm to really work right with that huge cam. Even with slicks, it's going to be slow taking off until you get the gears and converter... Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
IP: Logged |
kid vishus
Gearhead Posts: 6098
From: middle of NC
Registered: Oct 2000
|
posted 01-03-2005 04:21 PM
I've run that same camshaft in a motor that was built very similar, and it worked best shifting about 6800, and using a 5400-5500 convertor. It ran quicker with a looser convertor, but the mph suffered. And getting back to the 60' times, my '93, 4500 lb Lightning with the stock BF Goodrich tires will cut 2 oh 60' times all day.
IP: Logged |
n2oMike
Gearhead Posts: 2419
From: Spencer, WV
Registered: Jan 2001
|
posted 01-03-2005 04:38 PM
quote:
Originally posted by kid vishus:
I've run that same camshaft in a motor that was built very similar, and it worked best shifting about 6800, and using a 5400-5500 convertor.
Wow, I figured it would want quite a bit more rpm than that. Was there anything else holding it back? ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
IP: Logged |
Fordwiser
Gearhead Posts: 390
From: Metamora, Illinois
Registered: Dec 2000
|
posted 01-03-2005 06:51 PM
What's the car weigh? I would think with that engine combo it should at least be 5mph faster then that. Think that converter is shot, ger has a very bad reputation, most converter companies will work on other companies stuff, most won't even touch anything from ger!!! More gear will defenatly help, but I bet your biggest improvment will be a quality converter.
Roger
IP: Logged |
kid vishus
Gearhead Posts: 6098
From: middle of NC
Registered: Oct 2000
|
posted 01-03-2005 08:04 PM
quote:
Originally posted by n2oMike:
Wow, I figured it would want quite a bit more rpm than that. Was there anything else holding it back?
I used that camshaft in several different motors, and that where it always seemed to work the best. Even in a ported 2v headed motor it seemed to work best right at 7000 rpm. My experiance has been 4v clevelands love a lot of duration. My newest motor is a 402" clevor, and the cam in it is 276/286 @ .050. I plan on shifting it around 6800 also.
IP: Logged |
Built351c
Journeyman Posts: 96
From: Big Lake, MN
Registered: Dec 2001
|
posted 01-03-2005 10:16 PM
Wow. I never expected such a response. I will try and answer all the questions.1. Traction is not a big problem.
2. Car weighs 3480 with driver.
3. Shift point 7000 rpm.
4. It has slapper bars.
5. I race 1/4 mile. Muscle car shootouts -Rockfalls raceway Wednesday night street drags. - Brainerd raceway. Need dot approved tires/exhaust.
It looks like I would benifit from a stall change more then any gear change. I rode with my brother in his car and his 2800 stall lauched way harder then my car does and thats with a mild 350 in a 1977 datson 280Z. I knew something was not right the tach says 3800-4000 lauch but the car just is not setting you in the seat till after it gets moving. Suggestions on a stalls. I hear the top two are Coan and JPT after reading so many posts on hear. I think kid hit it on the nose with the stall. I still like to drive it on the street, It dont need to be the fastest car around, but if you could looked at my race video at rock falls last year where I won the 12.5-12.9 shootout. I got beat off the line by everyone. It was great watching the look on their faces when I got them at the end.  Gears will come after I get a better stall.
IP: Logged |
clevelandstyle
Gearhead Posts: 1035
From: Connersville, IN
Registered: Jul 2001
|
posted 01-03-2005 10:59 PM
Now you're talkin'. Good choice. I personally us JPT, but I would use Coan too.
------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 408C 4V, best time to date is 10.50 best MPH 127
IP: Logged |
Mustangsandmore Forums
