difference between lt1and l98
Thread Starter
Instructor
Joined: Sep 2003
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From: summerside P.E.I.
difference between lt1and l98
can any tell me whats the difference between and lt1 and a l98 mine is a 91 coupe i always thought it was an lt1 but someone on the firbird forum said it was an l98. just wondering whats the difference :seeya
Melting Slicks
Joined: Apr 2000
Posts: 2,408
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From: Bel Air Md
Re: difference between lt1and l98 (redhotandrollin)
The LT1 started in 92 . The engine incorporated a new camshaft, cylinder heads, a higher compression ratio, and multiport fuel injection to achieve 300 hp. compared to the 250 on the L98 engine.
[Modified by HG, 8:45 PM 1/22/2004]
[Modified by HG, 8:45 PM 1/22/2004]
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: difference between lt1and l98 (redhotandrollin)
91 is an L98, about 50hp less than the LT1
LT1 is a Gen II SBC, totally different intake/heads/cam/exhaust/block/cooling, etc etc. They changed it all.
LT1 is a Gen II SBC, totally different intake/heads/cam/exhaust/block/cooling, etc etc. They changed it all.
Team Owner
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From: Kerrville, Texas USA Hook 'em Horns!
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St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17
Re: difference between lt1and l98 (redhotandrollin)
thanks for the info guys .i only have 250 oh :sad: ill have to do something about that :auto:
More power!!! :smash:
Safety Car
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From: Conroe TEXAS!
Cruise-In X Veteran
Re: difference between lt1and l98 (redhotandrollin)
can any tell me whats the difference between and lt1 and a l98 mine is a 91 coupe i always thought it was an lt1 but someone on the firbird forum said it was an l98. just wondering whats the difference :seeya
Dont forget! you have 340 ft lbs of torque.....It doesent take much to take a stock Lt1....get to modding. :thumbs:
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Safety Car
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From: Conroe TEXAS!
Cruise-In X Veteran
Re: difference between lt1and l98 (redhotandrollin)
any info on what i should :confused: :steering:
You can go as fast as your wallet (or purse) is deep. :steering:
Drifting
Joined: Dec 2002
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From: MCAA License to Kill
St. Jude Contributor
Re: difference between lt1and l98 (Pickups1)
Start off with the exhaust. The L98 vettes came with really restrictive mufflers. You will feel an immediate difference. :hurray:
:cool: :cheers:
Le Mans Master
Joined: Jan 2004
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From: Why are there squished peanut butter cups in my underware?
Re: difference between lt1and l98 (LS1RS)
L98's are just plain better! :jester
[Modified by Z-07 freak, 2:50 PM 1/23/2004]
Pro
Joined: Jul 2002
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From: Da old Dominion va
Re: difference between lt1and l98 (LS1RS)
A 91 L98 has the sametorque as a 97-00 LS1 350 lb ft whereas a 92-93 LT1 has 330 lb ft and 94-96 is 340 lb ft. The main reason L98's have such a low hp rating is the tuned port runners can't flow enough air to into the engine past 4500 RPM. LT1's can rev higher which makes more hp. :seeya
Melting Slicks
Joined: Jul 2003
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From: Pomfret, CT
Finalist 2020 C4 of the Year - Unmodified
Re: difference between lt1and l98 (LS1RS)
[QUOTE]Ok, I'll put it to you straight. L98's are just plain better! :jester/QUOTE]
Bring it on!!! :jester
-Rick
Bring it on!!! :jester
-Rick
Instructor
Joined: Aug 2003
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From: Marietta GA
Re: difference between lt1and l98 (YellowYbody)
This article would beg to differ
http://www.vettenet.org/torquehp.html
http://www.vettenet.org/torquehp.html
Le Mans Master
Joined: Dec 2002
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From: Santa Teresa New Mexico
Re: difference between lt1and l98 (LS1RS)
Ok, I'll put it to you straight. L98's are just plain better! :jester
Dont forget! you have 340 ft lbs of torque.....It doesent take much to take a stock Lt1....get to modding. :thumbs: [/QUOTE]
:iagree:
Thread Starter
Instructor
Joined: Sep 2003
Posts: 187
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From: summerside P.E.I.
Re: difference between lt1and l98 (redhotandrollin)
:thumbs: thanks for the help guys :thumbs: i love this forum everyone is so willing to help everyone .i think this is just great.because been a woman i dont know to much about cars :cry so im thankful for all the help i get from everyone on this forum thanks :seeya :steering:
Drifting
Joined: Dec 2002
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From: MCAA License to Kill
St. Jude Contributor
Re: difference between lt1and l98 (95VROOM)
This article would beg to differ
http://www.vettenet.org/torquehp.html
http://www.vettenet.org/torquehp.html
Good job :thumbs: :cheers:
BTW, lots of good stuff in that article, but especially this part:
"...L98 is making 328 foot pounds of torque at its power peak (250 hp @ 4000), and we can infer that it cannot be making any more than 263 pound feet of torque at 5000 rpm...the L98 is probably making no more than around 210 pound feet or so at 5000 rpm, and anybody who owns one would shift it at around 46-4700 rpm, because more torque is available at the drive wheels in the next gear...
On the other hand, the LT1 is fairly happy making 315 pound feet at 5000 rpm, and is happy right up to its mid 5s redline.
So, in a drag race, the cars would launch more or less together. The L98 might have a slight advantage due to its peak torque occuring a little earlier in the rev range...the LT1 has a wider, flatter curve. From somewhere in the mid range and up, however, the LT1 would begin to pull away. Where the L98 has to shift to second (and throw away torque multiplication for speed), the LT1 still has around another 1000 rpm to go in first, and thus begins to widen its lead, more and more as the speeds climb. As long as the revs are high, the LT1, by definition, has an advantage."
[Modified by JSA 007, 10:26 AM 1/23/2004]