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I was wondering which on of these setups would be fastest for my 82 Z-28 as seen in my sig. I tried importing the DD2000 files into digital dragstrip or dragstrip se,something like that. But it would not load the files. I was wondering which one of these would be the fastest and best setup for a fast street car.
Sorry i can't post the actual files my web server is down.
Thanks Leigh
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
your motor sounds similar to mine, it's in my sig. Are your heads ported? what intake do you have? aside from your auto trans, your combo is close to mine. I am very happy with my cam, it makes great power to like 6200 rpms and has a wicked idle. The specs are in my sig though the LSA may actually be 110 degrees.
__________________ -84 Z28 L69. 5 speed with broken 3.73 posi, cam and porting.
-H Production Triumph Spitfire SCCA roadracer.
Of the two cams, I think the second would be faster also.
Mark
__________________ 1986 IROC LG4
Edelbrock Performer intake
Flowmaster Force 2 Cat Back with 3" Catco Cat
Dual Snorkel Air cleaner
Now I can go FAST!!!!(haha) WIGGY'S IROC HOMEPAGE
I have the Comp Cams XE262 in my 84 Z-28 and it is stronger than both of those. I don't have any trouble with idle, power brakes or anything else like that either.
The comp XE262 only makes slightly more horsepower above 4000 rpm but less torque and horsepower below that. I don't think the trade off in torque is worth the very slight gain in HP. Which off these combos would be the quickest, shifting at 5500.
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
I have the Comp Cams XE262 in my 84 Z-28 and it is stronger than both of those. I don't have any trouble with idle, power brakes or anything else like that either.
Word.
The 256 May be a bit faster than the 262, Im un decided.
But my 262 Pulls 99 Mph in the 1/4 on stock heads and exhuast, so Its no slouch.
Expect that to be close to 101-102 With Good headers.
you have to consider traction. moving the torque band up some can be helpfull at times. also, this is a desktop dyno and not a real engine. if your concerned about low end torque that much, use a higher stall converter.
__________________ 2006 Silverado 1500 RCSB 2wd 5.3L 345RWHP/341RWTQ. Comp Cam 222º/224º .566/.568 112LSA, 2600 stall, 3.73 gear (stock), Detroit Locker, 160º thermostat, Corsa Sport cat back, Outlaw cold air intake, Pacesetter long tubes.
13.59@100.34 2.04 60' In full street trim with no weight reduction and on the 20's.
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
Ok i ran these numbers through Dragstrip SE what do you think, first i did it with a 1800 rpm stall converter and then a 2500 rpm. Shifting at 5000 rpm
DEH255
1800 rpm
ET 13.0446
60ft 2.108
mph 105.35
2500 rpm
ET 12.914
60ft 1.986
mph 104.68
XE256
1800 rpm
ET 12.996
60ft 2.119
mph 105.85
2500 rpm
ET 12.8556
60ft 1.987
mph 104.97
XE262
1800 rpm
ET 13.024
60ft 2.140
mph 105.94
2500 rpm
ET 12.8776
60ft 2.005
mph 104.97
XE268
1800 rpm
ET 13.12
60ft 2.12
mph 106.05
2500 rpm
ET 12.9366
60ft 2.035
mph 104.97
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
Originally posted by ME Leigh Ok i ran these numbers through Dragstrip SE what do you think, first i did it with a 1800 rpm stall converter and then a 2500 rpm. Shifting at 5000 rpm
DEH255
1800 rpm
ET 13.0446
60ft 2.108
mph 105.35
2500 rpm
ET 12.914
60ft 1.986
mph 104.68
XE256
1800 rpm
ET 12.996
60ft 2.119
mph 105.85
2500 rpm
ET 12.8556
60ft 1.987
mph 104.97
XE262
1800 rpm
ET 13.024
60ft 2.140
mph 105.94
2500 rpm
ET 12.8776
60ft 2.005
mph 104.97
XE268
1800 rpm
ET 13.12
60ft 2.12
mph 106.05
2500 rpm
ET 12.9366
60ft 2.035
mph 104.97
Now I'd say your program has a problem. Something isn't right about your setup, or you're shifting too early. There's NO WAY a 256 will out perform a 262 or a 268. Heads or compression is killing the larger cam, ACCORDING to that program. By the way if you don't use new springs, comp may not honor the warrentee. I wouldn't put a new cam and lifters in without changing to the correct springs!
There is NO WAY that 256 cam will make more power than the 262 cam, especially with 3.73 gears. Real life is different than some computer program. My girlfriends camaro has a 262 cam in a 305 with intake, 3.42 gears, headers, and pretty much everything else bone stock and it runs 98MPH in the 1/4. Thats gotta be decent HP.
__________________ 88 GT Mustang, full cobra body conversion.
302 with some "goodies"
2007 Supercharged SS Cobalt, 2.7" blower pulley, some other stuff.....
Here are the specs for the motor setup in DD2000
my 82 Z-28 LU5 305 cid:
Low Performance/Pocket Porting
1.84 and 1.5 valves
9.5 compression
Dual Plane
600cfm carb
large tube headers and mufflers
Comp XE262H-10.cam
The dragstrip numbers came from Dragstrip SE with the following:
For 1800 rpm converter
Drive train:
Turbo 350 3 speed
1800 stall converter
2.35 multiplier
4 % slippage
3.73 rear drive ratio
Car:
3200lb
.38 Cd
Tires:
26.0 diam
8.5 wide high performance street
Launch:
1800 rpm
shifting at 5500rpm
For 2500rpm converter
Drive train:
Turbo 350 3 speed
2500 stall converter
2.30 multiplier
5 % slippage
3.73 rear drive ratio
Car:
3200lb
.38 Cd
Tires:
26.0 diam
8.5 wide high performance street
Launch:
2500 rpm
shifting at 5500rpm
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
Can you run the dragstrip program to shifting at 5750? Just out of curiosity.
And I think you're right. For the application you'd have that may be the cam to go with. I don't think that with better heads and so on it will create more power than the larger cams, but it does lead to a very good, often missed point. Bigger cam does NOT always mean more power!
Alright here are the numbers with a stall and launch speed of 2500rpm
DEH255
Shifting at 5750 rpm
ET 12.866
60ft 1.986
mph 105.34
Shifting at 6000 rpm
ET 12.832
60ft 1.986
mph 105.54
XE256
Shifting at 5750 rpm
ET 12.79
60ft 1.987
mph 106.43
Shifting at 6000 rpm
ET 12.75
60ft 1.987
mph 106.65
XE262
Shifting at 5750 rpm
ET 12.8045
60ft 2.005
mph 106.71
Shifting at 6000 rpm
ET 12.757
60ft 2.005
mph 106.99
1800 rpm
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
And I think you're right. For the application you'd have that may be the cam to go with. I don't think that with better heads and so on it will create more power than the larger cams, but it does lead to a very good, often missed point. Bigger cam does NOT always mean more power!
Yeah, I think that a lot of people "over cam" because they think bigger is better, and that a bigger cam has to make bigger power.
As can be seen by all of my DD2000 and Dragstrip SE data, again the XE256 is the fastest.
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
and youve got to be crazy to think that your cam/head/exhaust 305 is gonna break into the 12's. i would not trust your computer programs as far as you can throw them. youd be lucky if that combo made high to MAYBE mid 13's with a perfect driver and conditions. maybe a REAL drag racer will agree. im no expert but i do know it takes more than heads and a cam to take a 305 into 12's.
__________________ 98 z28 m6- Koni SA's, hawks, strano bar, turn one ps
Previous Cars: 84 z28, 96 formula, 99 T/A
I know there aere noway i'm gonna break into to the 12's or even the 13's i was just running some numbers to come up with the best combo i could find for the street. All of the tests were done with optimum conditions which i know i could not duplicate or even achieve. I was just hoping to get a good street, torque and horsepower combo that i would have some potential to use in the future with better parts, i.e. heads.
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
I think I know what you are getting at. Consider this though...
If you go with a slightly larger cam (which as stated before...you won't have any trouble with idle or power brakes or anything)....and when you decide you want more ponies, you'll already have the right cam in there.
And more power is what you end up wanting!!!
It's entirely up to you. That's the approach I've made though. I've only changed things that I know I will eventually want. I didn't go with cheap headers b/c I'd rather hold out until I get what I want.
And in the few instances I didn't follow that approach, I've regretted it.
Whatever you do, get some springs though. They're not expensive and there's nothing like getting it right the first time.
So does everybody think i sould go with an XE262, so i will have room for improvement.
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
I'd plan for the future. The 262 won't hurt you much at all with you current set up...just fractions of a second.
And you'll end up with more power as you continue to upgrade.
I think the 262 is a great cam for a street/strip car. It is very streetable, a lot of people have used it without any trouble, and is aggressive enough to produce so good power.
87 GTA 355/700r4
2006 Silverado 1500 RCSB 2wd 5.3L 345RWHP/341RWTQ. Comp Cam 222º/224º .566/.568 112LSA, 2600 stall, 3.73 gear (stock), Detroit Locker, 160º thermostat, Corsa Sport cat back, Outlaw cold air intake, Pacesetter long tubes.
