LT4 vs LT1
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LT4 vs LT1
Is there really a big difference between the two? Both have the same amount of torque, but the LT4 has 30 more horse, is it even noticable? I have never driven, or ridden in an LT4, so i'm looking for opinions from others who have.
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http://www.grandsportregistry.com/lt1vslt4.htm
Never ridden or driven in an LT1, so I am not much help.
From everything I have ever read or heard, that 30 HP on paper is more than noticeable in the real world.
Never ridden or driven in an LT1, so I am not much help.
From everything I have ever read or heard, that 30 HP on paper is more than noticeable in the real world.
Le Mans Master
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Go to www.grandsportregistry.com, then look for lt1 vs lt4 on the left side of page. Has specs and part numbers for lt1 and lt4.
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There was a BIG difference between Betty Boop, and when The Ghost was stock. The Ghost was beat up, and I could tell it was a stronger engine. Note that Betty Boop is a G92 automatic.
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Bought new a ’93 & a ’94 LT1. Had over 80K miles of seat time between the two of them. Traded the ’94 for the ’96. I didn’t notice a difference during regular driving. Where I immediately noticed a difference is how the LT4 keeps on pulling due to the increased RPM range (I can only imagine the permagrin LT5 owners have). To me, the LT4 responds noticeably quicker than the LT1’s when dropping gears, e.g. fifth to third.
I am far from a dragstrip superstar; but for comparison
Best time with my ’94 was 13.6 @ 103.
Best for my LT4 is 13.2 @ 107. Car is bone stock, this was with 20 gallons of fuel in the tank; Goodyear GS-C’s with 30 psi at all four corners; track elevation 890 ft. above sea level; temp mid-80’s. Had some wheel spin off the line, if I was a better driver 13.1 is a realistic possibility.
Really liked my LT1’s, great motor in a nicely balanced chassi.
B17Crew
I am far from a dragstrip superstar; but for comparison
Best time with my ’94 was 13.6 @ 103.
Best for my LT4 is 13.2 @ 107. Car is bone stock, this was with 20 gallons of fuel in the tank; Goodyear GS-C’s with 30 psi at all four corners; track elevation 890 ft. above sea level; temp mid-80’s. Had some wheel spin off the line, if I was a better driver 13.1 is a realistic possibility.
Really liked my LT1’s, great motor in a nicely balanced chassi.
B17Crew
Last edited by B17Crew; Apr 28, 2013 at 01:19 AM.
Thread Starter
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From: They say you learn from your mistakes, I must be a genius
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St. Jude Donor '14-'15-'16-'17
Thanks for the replies everyone. I am kind of missing rowing through the gears lately and am just doing some research. Thanks again. 
Instructor
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You may not notice the difference between the two when driving because of the LT1's low end torque, but it's there.
You don't notice the LS1's pull on the freeway either and think "this doesn't feel any faster than an LT1"...but it is.
If you were to run the two side by side, given equal drivers, the LT4 would walk away from the LT1, the same as an LS1 does.
Also, all 1996 cars that were manuals were LT4's, not just the grand sports.
Le Mans Master
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The LT4 has essentially the same torque curve until you reach the upper end. There the LT4 has about 500 rpm more usable torque, which means the "4" has the ability to pull while still in a lower gear (read: higher torque amplification to the rear wheels) just a tad longer. So, where top end is important, and you're rowing gears, the "4" has more at the top of every gear, AND that advantage is accumulative at every gear change!
I'd skip the "4" and go right to the head of the class and get the "5" (for some real permagrin...speaking of C4 LTx's)
I'd skip the "4" and go right to the head of the class and get the "5" (for some real permagrin...speaking of C4 LTx's
)
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IMO stock vs stock its about the same difference as going from a late L98 to an LT1. If you drive like a Nancy Boy you won't notice the difference; but if you have a pair the difference is clearly apparent.
Too bad that when stock, all three are now truly underpowered for a modern performance machine.
Mike
Too bad that when stock, all three are now truly underpowered for a modern performance machine.
Mike
Last edited by aboatguy; Apr 28, 2013 at 10:28 AM.
Thread Starter
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From: They say you learn from your mistakes, I must be a genius
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St. Jude Donor '14-'15-'16-'17
The LT4 has essentially the same torque curve until you reach the upper end. There the LT4 has about 500 rpm more usable torque, which means the "4" has the ability to pull while still in a lower gear (read: higher torque amplification to the rear wheels) just a tad longer. So, where top end is important, and you're rowing gears, the "4" has more at the top of every gear, AND that advantage is accumulative at every gear change!
I'd skip the "4" and go right to the head of the class and get the "5" (for some real permagrin...speaking of C4 LTx's)
I'd skip the "4" and go right to the head of the class and get the "5" (for some real permagrin...speaking of C4 LTx's
)
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Yes I have All 3 (LT1,LT4,LT5) each one is a step up.
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Go to www.grandsportregistry.com, then look for lt1 vs lt4 on the left side of page. Has specs and part numbers for lt1 and lt4.
