LT4vs.LT5
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 1,042
Likes: 0
LT4vs.LT5
ok,havent seen a thread like this in a while,here's the scenario,96 LT4vs.95 ZR1,little bro,vs.big bro,at the dragstrip,and the dyno.both cars bone stock.although I never saw head to head,same day,etc.did some research,heres what I found,its all hypothetical and for fun for those who've always wanted to know,which was quicker
96 LT4
60ft 1.93
1/8mile 8.3@86mph
1/4mile 12.9@108mph
302 RWHP
299 RWTQ
95 ZR1
60ft 2.08
1/8mile 8.2@88mph
1/4mile 12.8@112mph
347 RWHP
338 RWTQ
LT4 pulls out better,but ZR1 catches it by 50 mph(0-60 for LT4 is 4.7,ZR1 is 4.5)then 32 valves kick in,and by the 1/8 its ahead,and nips it by the 1/4.who has some realworld experience between the 2?
96 LT4
60ft 1.93
1/8mile 8.3@86mph
1/4mile 12.9@108mph
302 RWHP
299 RWTQ
95 ZR1
60ft 2.08
1/8mile 8.2@88mph
1/4mile 12.8@112mph
347 RWHP
338 RWTQ
LT4 pulls out better,but ZR1 catches it by 50 mph(0-60 for LT4 is 4.7,ZR1 is 4.5)then 32 valves kick in,and by the 1/8 its ahead,and nips it by the 1/4.who has some realworld experience between the 2?
Drifting
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Screw the ET... Look at the mph; that's more power out of the LT5, plain and simple. The disparity between the two is all in the short time; 1.93 vs. 2.08. For every tenth in 60' it's worth two tenths in the 1/4. Less torque, different driver, who knows what other variables between the two vehicles. Additionally a simple degreeing of the stock cams on an LT5 is often worth 40-60 hp...
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by jburnett
Screw the ET... Look at the mph; that's more power out of the LT5, plain and simple. The disparity between the two is all in the short time; 1.93 vs. 2.08. For every tenth in 60' it's worth two tenths in the 1/4. Less torque, different driver, who knows what other variables between the two vehicles. Additionally a simple degreeing of the stock cams on an LT5 is often worth 40-60 hp...
I have been tuning one memebers ZR1 on my dyne, and as Jeb said with degreed stock cams, this 368 LPE car with ported runners and plenum laid down over 450Hp on my Mustang dyne at 7000 RPM 
Le Mans Master
Joined: Jun 2002
Posts: 6,097
Likes: 2
From: Cincinnati Oh
The LT4 is newer and is therefore better. Simple as that (well, that and the LT4 comes in a vert). Who cares that the ZR-1 is an exotic, has more hp, tq, 32 valves, DOHC, holds world records and shows most cars its tail lights after 100 mph.
On the drag strip they are close, on the street there is clear winner.
They are both very nice Corvettes, so you really can't go wrong with either.
On the drag strip they are close, on the street there is clear winner.
They are both very nice Corvettes, so you really can't go wrong with either.
Instructor
Joined: Mar 2005
Posts: 208
Likes: 0
Originally Posted by all4c4lt4
The LT4 is newer and is therefore better. Simple as that (well, that and the LT4 comes in a vert). Who cares that the ZR-1 is an exotic, has more hp, tq, 32 valves, DOHC, holds world records and shows most cars its tail lights after 100 mph.
On the drag strip they are close, on the street there is clear winner.
They are both very nice Corvettes, so you really can't go wrong with either.
On the drag strip they are close, on the street there is clear winner.
They are both very nice Corvettes, so you really can't go wrong with either.
The LT4 is better because it is newer????? I dont think so...the LT4 came out in 96 nad the ZR1 ended in95...........one year.
Trust me, the LT5 makes 75 more rated hp than the lt4 (405 vs 330)....trap speeds dont lie.
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Originally Posted by bigcityvette
The LT4 is better because it is newer????? I dont think so...the LT4 came out in 96 nad the ZR1 ended in95...........one year.
Trust me, the LT5 makes 75 more rated hp than the lt4 (405 vs 330)....trap speeds dont lie.
Trust me, the LT5 makes 75 more rated hp than the lt4 (405 vs 330)....trap speeds dont lie.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
Le Mans Master
Joined: Apr 2000
Posts: 6,294
Likes: 0
From: Amateur driver on open course.
Originally Posted by bigcityvette
The LT4 is better because it is newer????? I dont think so...the LT4 came out in 96 nad the ZR1 ended in95...........one year.
Trust me, the LT5 makes 75 more rated hp than the lt4 (405 vs 330)....trap speeds dont lie.
Trust me, the LT5 makes 75 more rated hp than the lt4 (405 vs 330)....trap speeds dont lie.
Burning Brakes
Joined: Sep 2004
Posts: 998
Likes: 8
Originally Posted by vette&f-bod lover
ok,havent seen a thread like this in a while,here's the scenario,96 LT4vs.95 ZR1,little bro,vs.big bro,at the dragstrip,and the dyno.both cars bone stock.although I never saw head to head,same day,etc.did some research,heres what I found,its all hypothetical and for fun for those who've always wanted to know,which was quicker
96 LT4
60ft 1.93
1/8mile 8.3@86mph
1/4mile 12.9@108mph
302 RWHP
299 RWTQ
95 ZR1
60ft 2.08
1/8mile 8.2@88mph
1/4mile 12.8@112mph
347 RWHP
338 RWTQ
LT4 pulls out better,but ZR1 catches it by 50 mph(0-60 for LT4 is 4.7,ZR1 is 4.5)then 32 valves kick in,and by the 1/8 its ahead,and nips it by the 1/4.who has some realworld experience between the 2?
96 LT4
60ft 1.93
1/8mile 8.3@86mph
1/4mile 12.9@108mph
302 RWHP
299 RWTQ
95 ZR1
60ft 2.08
1/8mile 8.2@88mph
1/4mile 12.8@112mph
347 RWHP
338 RWTQ
LT4 pulls out better,but ZR1 catches it by 50 mph(0-60 for LT4 is 4.7,ZR1 is 4.5)then 32 valves kick in,and by the 1/8 its ahead,and nips it by the 1/4.who has some realworld experience between the 2?
Drifting
Joined: Feb 2002
Posts: 1,952
Likes: 2
From: Little Rock Arkansas
Originally Posted by Ladimer
Were did you get the rwhp numbers from? I just read a post in the ZR1 forum not long ago that in 95, the heads were manufactureed by a different supplier and a stock motored 95 put down 365 at the wheels.
-Jeb
Race Director
Joined: Aug 2003
Posts: 11,043
Likes: 3
From: San Jose Pat Tillman - American Hero
Originally Posted by Ladimer
Were did you get the rwhp numbers from? I just read a post in the ZR1 forum not long ago that in 95, the heads were manufactureed by a different supplier and a stock motored 95 put down 365 at the wheels.
I personally witnessed a 90 put down around 360 in basically stock trim, only K&N and an inexpensive-type catback.
Burning Brakes
Joined: Apr 2000
Posts: 980
Likes: 2
From: Chandler AZ
Originally Posted by all4c4lt4
The LT4 is newer and is therefore better. Simple as that (well, that and the LT4 comes in a vert). Who cares that the ZR-1 is an exotic, has more hp, tq, 32 valves, DOHC, holds world records and shows most cars its tail lights after 100 mph.
On the drag strip they are close, on the street there is clear winner.
They are both very nice Corvettes, so you really can't go wrong with either.
On the drag strip they are close, on the street there is clear winner.
They are both very nice Corvettes, so you really can't go wrong with either.
Last edited by VAHROOM; May 19, 2005 at 05:52 PM.
Thread Starter
Burning Brakes
Joined: Mar 2005
Posts: 1,042
Likes: 0
Originally Posted by Perfusion
I personally witnessed a 90 put down around 360 in basically stock trim, only K&N and an inexpensive-type catback.
Race Director
Joined: Sep 2004
Posts: 13,793
Likes: 0
From: St. Peters MO Sometimes you have to prove yourself by doing alot of killing or alot of dying...
Originally Posted by FoolCrzy
It sure is fun, though.
LT4 rocks!
unfortunately, not as much as the LT5...
Race Director
Joined: Mar 1999
Posts: 16,950
Likes: 0
From: Stafford, Virginia Kittah, Kittah, Kittah...
Originally Posted by 95AquaC4
the LT5's were built back in the late 80's, early 90's and stored. They are quite a bit older than a LT4. I do however disagree with newer=better. Perhaps in some cases, but I'd opt for the ZR1 over an LT4 any day.
Safety Car
Joined: Feb 1999
Posts: 4,724
Likes: 16
From: Little Elm TX
I've raced against and test drove both many, many times over the years. Those LT-4's do really well at the track with a good driver.... most go mid 13's, but I've seen some experienced racers take them into the high 12's bone stock.... thats pretty impressive.
ZR-1's seem to have a big variety.... I've seen them go as slow as high 13's and low 14's, although obviously the driver needed a lot of work. One guy at Carlsbad several years ago had 4.11 gears, exhaust and I think an aftermarket air cleaner of some sort and after some practice ran a 12.5 @ 114 mph...... thats pretty darn good too !!
I'd take either one myself.....but if I had to pick one.... you gotta like a maintenance free motor that you can take up to 7500 rpm !!
cheers,
Beach Bum
ZR-1's seem to have a big variety.... I've seen them go as slow as high 13's and low 14's, although obviously the driver needed a lot of work. One guy at Carlsbad several years ago had 4.11 gears, exhaust and I think an aftermarket air cleaner of some sort and after some practice ran a 12.5 @ 114 mph...... thats pretty darn good too !!
I'd take either one myself.....but if I had to pick one.... you gotta like a maintenance free motor that you can take up to 7500 rpm !!
cheers,
Beach Bum
Race Director
Joined: Oct 1999
Posts: 13,298
Likes: 14
From: Somers NY
Originally Posted by Beach Bum
but I've seen some experienced racers take them into the high 12's bone stock.... thats pretty impressive.
ZR-1's seem to have a big variety.... I've seen them go as slow as high 13's and low 14's, although obviously the driver needed a lot of work. One guy at Carlsbad several years ago had 4.11 gears, exhaust and I think an aftermarket air cleaner of some sort and after some practice ran a 12.5 @ 114 mph...... thats pretty darn good too !!
I'd take either one myself.....but if I had to pick one.... you gotta like a maintenance free motor that you can take up to 7500 rpm !!
cheers,
Beach Bum
ZR-1's seem to have a big variety.... I've seen them go as slow as high 13's and low 14's, although obviously the driver needed a lot of work. One guy at Carlsbad several years ago had 4.11 gears, exhaust and I think an aftermarket air cleaner of some sort and after some practice ran a 12.5 @ 114 mph...... thats pretty darn good too !!
I'd take either one myself.....but if I had to pick one.... you gotta like a maintenance free motor that you can take up to 7500 rpm !!
cheers,
Beach Bum
but my stock motored LT1 has run 12.28 @ 110 & its an automatic, which we all know runs less MPH than a stick.I'd love to have either of the other two LT4 or ZR1 but not to bracket race with... My LT1 does very well vs the "Big Boys" at E Town