lt-1 vs lt-4
Melting Slicks
Joined: Jan 2002
Posts: 3,159
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Re: lt-1 vs lt-4 (94 M-6)
its 30 or 40 hp. of coarse a cam, headers and bolt ons will get you there. but that LT4 is idling bone stock.
If you really have a hard on, just go ge an LT1 intake and heads and call it close enough. Lt4 castings can support some wicked power :yesnod:
If you really have a hard on, just go ge an LT1 intake and heads and call it close enough. Lt4 castings can support some wicked power :yesnod:
Burning Brakes
Joined: Nov 2003
Posts: 935
Likes: 2
From: Beverly, NJ
Re: lt-1 vs lt-4 (LT4BUD)
Wow. I actually thought that all the Vettes have the same 350 bottom end. I have a L98 in my 86. So what other vette engines have the same bottom end as mine? I also have been thinking about converting mine. I also hve the cast iron heads. Not sure it that matters though.
Thread Starter
Instructor
Joined: May 2002
Posts: 155
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From: Saskatoon Saskatchewan
Re: lt-1 vs lt-4 (darkman5001)
well, the original intent of my post wasnt to say, the lt-4 is a dog for what you pay.
I have bought an lt-1, and have since found it responds very well to minor bolt ons. that is great. I imagine the lt-4 would as well. Im just saying that for 2000 bucks, i could easily replicate the performance of an lt-4, and i would still be under the price of an lt4.
I stated that i wanted to buy an lt4, and after decding that i would buy the lt1, i sort of second guessed myself afterwards, until i started reading.
I wasnt out to relvitalize the great debate that has apparently raged on since the beginning of time, just saying that now, more than ever, i am very happy with my purchase.
I have bought an lt-1, and have since found it responds very well to minor bolt ons. that is great. I imagine the lt-4 would as well. Im just saying that for 2000 bucks, i could easily replicate the performance of an lt-4, and i would still be under the price of an lt4.
I stated that i wanted to buy an lt4, and after decding that i would buy the lt1, i sort of second guessed myself afterwards, until i started reading.
I wasnt out to relvitalize the great debate that has apparently raged on since the beginning of time, just saying that now, more than ever, i am very happy with my purchase.
Melting Slicks
Joined: Mar 2003
Posts: 2,472
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From: Toronto ONTARIO
Re: lt-1 vs lt-4 (94 M-6)
i dont mean to bust your bubble. But i think that if you had any performance modifications in mind the LT4 would have been the way to go. Any mods you do to the Lt1, you would probably gain x amount of power. The same mods on the Lt4 would have gained you X+ a few more hp. Basically its like starting with a glass half filled with water. IF the goal is to try and fill it, why not just start with a glass that has more water in it??
besides that to replicate the LT4 power, reliability and durability you'd spend more than you would need to.
The LT4 has a higher redline, better crank, rings, rockers, heads...... the 8x rpm tacho, the list goes on.
lt1 :smash: LT4
besides that to replicate the LT4 power, reliability and durability you'd spend more than you would need to.
The LT4 has a higher redline, better crank, rings, rockers, heads...... the 8x rpm tacho, the list goes on.
lt1 :smash: LT4
Le Mans Master
Joined: Apr 2000
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From: DrunkDefender
CI 1-2-3-4-5-6-7-8 Veteran
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St. Jude Donor '07-'10
Re: lt-1 vs lt-4 (DieL)
Mine put down 316 rwhp with a drop in KN filter, otherwise stock. Best 1/8th et was 8.54 with a 2.08 60 foot time. Best 1/4 was 13.32 with a 2.12 60 foot time at the last cruise in.
Melting Slicks
Joined: Nov 2003
Posts: 3,375
Likes: 1
From: Northern CA
Re: lt-1 vs lt-4 (DieL)
I have an LT-4 so they are obviously superior :hurray:
But coming back to reality for a minute, with SB Chebbys long history of being reliable high performance engines if built right, I dounbt that the extra durability of an LT-4 means much on a street engine that is ocassionally drag raced or autocrossed.
If you are doing a moderately hot street engine build up with heads, than I doubt that the LT-4 initial power advantage matters either.
But coming back to reality for a minute, with SB Chebbys long history of being reliable high performance engines if built right, I dounbt that the extra durability of an LT-4 means much on a street engine that is ocassionally drag raced or autocrossed.
If you are doing a moderately hot street engine build up with heads, than I doubt that the LT-4 initial power advantage matters either.
Melting Slicks
Joined: Apr 2000
Posts: 3,490
Likes: 2
From: Oviedo FL
Re: lt-1 vs lt-4 (DieL)
Diel, you obviously didn't see my post on the previous page. My guess is there would not be a 10 hp difference between the two motors if you set them up with the same head/cam/exhaust.
Mike
Mike
Instructor
Joined: Sep 2002
Posts: 175
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From: Oceanside CA
Re: lt-1 vs lt-4 (xs650)
I currently have a 93 LT1. I've owned a LT4 car with only a K&N filter added to it. Nothing else was changed. Stock for stock, that car pulled way harder than my LT1. It felt like a big-block. It's tough to beat that 6800 redline. It's just more fun to have the extra revs. I always run out of revs with my LT1. LT4's are also worth a lot more money because an original assembly is allowed in SCCA racing. I just sold a 33K mile stock LT4 engine to a Firebird owner who is going to race it in SCCA. He's allowed to do so because of the 100LT4 Camaros that were produced in 1997. The LT4 is the final and best version of the pushrod Chevy V8. I own an LT1 and it's fun, but it is not an LT4 by any means. ( stock for stock of course. )
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Melting Slicks
Joined: May 2002
Posts: 2,670
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From: Severna Park MD
Re: lt-1 vs lt-4 (blk95)
If i'd ever go to N.J. I'd hand over the keys to MOJO just to see what he'd run and hopefully it came back around in one piece. :lolg:
Advanced
Joined: Nov 2003
Posts: 63
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From: Alamogordo NM
Re: lt-1 vs lt-4 (NavyVet)
Don't anyone take this the wrong way or nothing. I just had to put a few facts in here for us ZR-1 guys. My ZR-1 weighs in at 3625 LBS. with full tank. I don't think that is too far off what an LT1 or LT4 weighs. Granted my Z is a 1990 and I believe that was the lightest year they made. Also in the original post, the poster heard the the LT5 had problems. As far as I have heard the LT5 is the most reliable engine that was put in a Vette. My car is 13 years old and it hasn't thrown a code yet since I have owned it. Granted, I have only had it a month but, my 86 Through codes the day I picked it up and never stopped. The LT5 is costly to repair but, it rarely needs major repairs. These engines are built like tanks. I know I know this is a LT1 vs LT4 thread but, some injustices were being commited and I had to defend my own :jester Peace out.
Team Owner
Joined: Dec 2003
Posts: 88,774
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From: L.A river under the Los Feliz Bridge
St. Jude Donor '14-'15-'17
Re: lt-1 vs lt-4 (Mr Mojo)
There a few that posted some good 1/4 numbers but the ones i've seen go down the track haven't did better than mid 13's.
Driving ability has a ton to do with the ETs people turn, especially in 6-speed cars. In my LT-4, I am nearly always between 12.95 and 13.20 depending on air and track conditions. I have seen Z06s run slower than me by several tenths at the track on the same day, but I would not say that my car is faster than Z06s.
Ahh, I love these convrsations, it's what makes having these cars fun. No one is right an no one is wrong! :thumbs:
I've beaten many a LT4 with my stock LT1 six speed. Comes down to the driver everytime.
Driving ability has a ton to do with the ETs people turn, especially in 6-speed cars. In my LT-4, I am nearly always between 12.95 and 13.20 depending on air and track conditions. I have seen Z06s run slower than me by several tenths at the track on the same day, but I would not say that my car is faster than Z06s.
Ahh, I love these convrsations, it's what makes having these cars fun. No one is right an no one is wrong! :thumbs:
I've beaten many a LT4 with my stock LT1 six speed. Comes down to the driver everytime.
Race Director
Joined: Dec 2002
Posts: 13,345
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From: SCMR Rat Pack'r Charter Member..Great Bend KS
Re: lt-1 vs lt-4 (Jim's90Zr1)
My ZR-1 weighs in at 3625 LBS. with full tank. I don't think that is too far off what an LT1 or LT4 weighs. .
Gottcha'.....
:)
Larry
code5coupe
:seeya
Race Director
Joined: Oct 2002
Posts: 10,864
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From: Southern CA
Re: lt-1 vs lt-4 (rocco16)
:iagree: w/ rocco16
Those who throw raw HP/Torque numbers around almost always leave out the gross weight those horses have to move. My LT4 has kept up with or beat a couple of ZR1's and a lot of LS1's. I've lost as many too. Driver skill involved, of course. But do not doubt, the LT4 is power to be reckoned. :)
[Modified by froggy47, 7:56 PM 12/24/2003]
Those who throw raw HP/Torque numbers around almost always leave out the gross weight those horses have to move. My LT4 has kept up with or beat a couple of ZR1's and a lot of LS1's. I've lost as many too. Driver skill involved, of course. But do not doubt, the LT4 is power to be reckoned. :)
[Modified by froggy47, 7:56 PM 12/24/2003]
Advanced
Joined: Nov 2003
Posts: 63
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From: Alamogordo NM
Re: lt-1 vs lt-4 (froggy47)
I forgot to add,"With me in it" so subtract 190 lbs to the final number. So, again I say, Not too far off, from a LT1/4. I don't know what the "Gotcha" thing is, I still top in at 180 stock. Even if you beat me in the quarter, I pass by shortly after. :jester So I guess Gotcha back! :D My purpose wasn't to start anything, it was to clearify that the ZR-1s are not that much heavier. They are heavier but, I don't think anything more than a couple hundred pounds. But, you also have to consider, the extra weight is 4 cams, 32 valves, and eight quarts of oil. :lol:
