What gives the 96-97 F-Body +10hp?
10-29-2007, 10:27 AM
#21
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GM always would either undershoot or overshoot their performance ratings from the factory. look at all of the old vettes, they rated some of them at 450 horse when in reality they were 500+ horse. (corvette L88 for example)
(article from supercars.net)
In detail the L71 and L88 Corvettes were very different machines. One was raced, the other was driven. While the L71 and L88 shared the same aluminum cylinder heads, the L88 took the theme a step further by adding a Tuftrided crankshaft, 12.5:1 pistons, cold air induction and a 850 CFM dual feed Holley carburetor into the mix. As with any racing machine, the L88 left out the fan shroud, choke and often, the heating system. With it's exhaust removed, and running on racing fuel, the L88 was capable to 600 horsepower which was more then enough to take class victory at the 1967 Sebring 12 Hours. On the road, and far above GMs 435 bhp figure, the L88 can claim anywhere from 550 to 570 horsepower in production trim.
(article from supercars.net)
In detail the L71 and L88 Corvettes were very different machines. One was raced, the other was driven. While the L71 and L88 shared the same aluminum cylinder heads, the L88 took the theme a step further by adding a Tuftrided crankshaft, 12.5:1 pistons, cold air induction and a 850 CFM dual feed Holley carburetor into the mix. As with any racing machine, the L88 left out the fan shroud, choke and often, the heating system. With it's exhaust removed, and running on racing fuel, the L88 was capable to 600 horsepower which was more then enough to take class victory at the 1967 Sebring 12 Hours. On the road, and far above GMs 435 bhp figure, the L88 can claim anywhere from 550 to 570 horsepower in production trim.
10-29-2007, 10:36 AM
#22
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Overall the 93 cars have been the quickest stock for stock. Now modifying them to become quicker becomes more difficuly becuase of those things and yes it would contribute to lower mpg but they are quicker...for the most part. Now its hard to find a completely stock 1993 in good condition. And forthe 10hp difference it is the exhaust difference but whether it truly is 10hp more is debatable. The LT1's in the F-Body's were underrated anyways, i always go by the corvette ratings since thats gm's "daddy" car and they dont want an f-body 10K less to buy to have the same power even thought the drivetrains are identical
10-29-2007, 10:50 AM
#23
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I think when they went to OBDII, they also programmed the cpu and made the adjustments that gave the 10 more ponies, not like you can feel anyway. Just my thought
10-29-2007, 02:11 PM
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I believe the 93's had the bigger lift...and was a little more aggressive than any of the others, but the 96-97 heads flowed better out of the box...but you cant hog them out as much. 93's rule.
10-29-2007, 04:41 PM
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Overall the 93 cars have been the quickest stock for stock. Now modifying them to become quicker becomes more difficuly becuase of those things and yes it would contribute to lower mpg but they are quicker...for the most part. Now its hard to find a completely stock 1993 in good condition. And forthe 10hp difference it is the exhaust difference but whether it truly is 10hp more is debatable. The LT1's in the F-Body's were underrated anyways, i always go by the corvette ratings since thats gm's "daddy" car and they dont want an f-body 10K less to buy to have the same power even thought the drivetrains are identical
my dad has a '93 TA with 30k miles on it. it just has a borla catback. 6speed red hardtop
10-29-2007, 05:44 PM
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yea, but the 6 speeds were 3.23's because of the more aggressive gearing in the M29 tranny, those tranny's are rated for less power because of that. But yea they are definitely odd *****.
10-29-2007, 09:39 PM
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I love my odd duck! It's got probably almost all the options for a Formula 
As for my TPI knowledge, I don't own one, so that's why I post here. I rarely bring up TPI info due to it's relevance to the topic. People were saying it was OBDII that made the gain, but TPI were all OBDI.
As for my TPI knowledge, I don't own one, so that's why I post here. I rarely bring up TPI info due to it's relevance to the topic. People were saying it was OBDII that made the gain, but TPI were all OBDI.
10-29-2007, 10:19 PM
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The only one with a different motor was some of the lucky few in 97 who got an SLP modified car that SLP stuck LT4s in left over from the 96 Grand Sport Vettes.
10-29-2007, 10:36 PM
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You'd know if you had an LT4.
And I'm not sure if it's the WS6 cars or the Firehawks that got them. I believe it was the SS' that got em, but I don't think Camaro has another "performance" oriented model that gets special stuff (Z28 doesn't)
And I'm not sure if it's the WS6 cars or the Firehawks that got them. I believe it was the SS' that got em, but I don't think Camaro has another "performance" oriented model that gets special stuff (Z28 doesn't)
10-29-2007, 11:15 PM
#35
I love how people say thier year is the best, because they own that particular year of f-bodyLOL! 96 and 97 LT-1 had better flowing dual cat exhaust, with a little more lift cam and a better tune!. Yes they are 10 hp more stock vs stock. Would that be my final deciding decision in buying one of these years HELL NO! Most people around here mod them. so if you do bolt-ons and exhaust work and tuning, they all should be around the same power!
10-29-2007, 11:21 PM
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I can't say if 93 is the best or not. I personally like SD vs MAF, but that's me. Also, most people here HAVE said that 93 was a bit quicker of a year than the rest. So it's not just the people who own them.
10-29-2007, 11:21 PM
#37
I love how people say thier year is the best, because they own that particular year of f-bodyLOL! 96 and 97 LT-1 had better flowing dual cat exhaust, with a little more lift cam and a better tune!. Yes they are 10 hp more stock vs stock. Would that be my final deciding decision in buying one of these years HELL NO! Most people around here mod them. so if you do bolt-ons and exhaust work and tuning, they all should be around the same power!
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^^^100% agreed^^^
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^^^100% agreed^^^
10-29-2007, 11:23 PM
#38
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LT4 cars were Firehawks and SLP SS's, 100 SS's were produced and correct me if im wrong but i believe 29 Firehawks were made, they planned on 100 but ran out of time. Simply took the LT4 (the same exact one) from the Grand Sport Vette's and put them into the Hawk's and SS's. And if you notice they were rated the same so the exhaust has nothing to do with the power difference between the vette's and F-Body's.