Caprice vs Corvette LT1
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 810
Likes: 4
From: Austria
Caprice vs Corvette LT1
Hi !!
does somebody know, where´s the difference between an Caprice and an Corvette LT1?
the corvettes are rated 305hp, and the Caprice(1994) 260hp
thank you
does somebody know, where´s the difference between an Caprice and an Corvette LT1?
the corvettes are rated 305hp, and the Caprice(1994) 260hp
thank you
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Team Owner
Joined: Dec 2000
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From: Phila., PA burbs
wrong
from Impala SS forum FAQ page:
14.How come the Camaro has a 300 HP LT1, and the Impala SS is rated at 260 HP?
What's the difference?
For the Impala, GM produces an iron head version of the LT1. The
Camaro, and Corvette come with a lighter, aluminum head LT1. The
camshaft in the iron head LT1 is milder than the ones available in the
other LT1 powered GM cars. The basic idea is that such awesome power
in the hands of normal America could be dangerous. GM limited the HP
rating on the Impala so as not to push it's handling envelope. Here
are some major differences:
Item/Description F/Y-car(Camaro) B-car(Impala)
-----------------------------------------------------------------
Heads: Aluminum Cast-iron
Cam/valve lift specs.: .450/.460 (int/exh) .417/.429 (int/exh)
Valve springs: 268 lb/in 393 lb/in
Valve spring od.: 1.300" 1.241"
Valve spring inst. ht.: 1.78" 1.70"
MAF id.: 3.5" 3.25"
What's the difference?
For the Impala, GM produces an iron head version of the LT1. The
Camaro, and Corvette come with a lighter, aluminum head LT1. The
camshaft in the iron head LT1 is milder than the ones available in the
other LT1 powered GM cars. The basic idea is that such awesome power
in the hands of normal America could be dangerous. GM limited the HP
rating on the Impala so as not to push it's handling envelope. Here
are some major differences:
Item/Description F/Y-car(Camaro) B-car(Impala)
-----------------------------------------------------------------
Heads: Aluminum Cast-iron
Cam/valve lift specs.: .450/.460 (int/exh) .417/.429 (int/exh)
Valve springs: 268 lb/in 393 lb/in
Valve spring od.: 1.300" 1.241"
Valve spring inst. ht.: 1.78" 1.70"
MAF id.: 3.5" 3.25"
Last edited by TA; Apr 19, 2008 at 09:07 AM.
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
up to abt 4500 rpm the caprice lt1, with iron heads that actually flow better than the alum heads and camshaft selected to produce low end torque , makes more power than the vette lt1 (reqd because typ caprice sedan weighs almost 1000 lb more than vette, caprice wagons add another 600 lb)...caprice "hushed" intake tract and restrictive exhaust sacrifice some power at higher rpm.
Last edited by redrose; Apr 19, 2008 at 10:42 AM.
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Melting Slicks
Joined: Feb 2006
Posts: 2,753
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From: backwoods upstate ny
lt1's are 350 ci, but the L99 (265 ci) looks exactly like the lt1 externally, hence the nickname "baby lt1"...gotta look close to tell em apart, even many "police" caprices (green radiator hoses) were ordered with the L99... fuel injectors are smaller flow for L99, different number on injector body.
Team Owner
Joined: Dec 2000
Posts: 21,094
Likes: 282
From: Phila., PA burbs
lt1's are 350 ci, but the L99 (265 ci) looks exactly like the lt1 externally, hence the nickname "baby lt1"...gotta look close to tell em apart, even many "police" caprices (green radiator hoses) were ordered with the L99... fuel injectors are smaller flow for L99, different number on injector body.
Racer
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Racer
Joined: Dec 2007
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From: San Antonio Texas
Burning Brakes
Joined: Sep 2003
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From: Miami FL
Or is it that they "think" they know the correct info? If I'm not 100% sure I'll start a relpy with "I think" and make clear that "I'm not sure". Or "I believe"
I would hate for someone to buy a Caprice motor as a replacement for thier blown Vette LT1 thinking they are getting the "same" motor...
Then find out it is totally different (Or moslty different) motorI guess you have too be really carefull as to what you see posted on the forum...
