82 mc. 231 v6 to a 94 lt1
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Joined: Jun 2011
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82 mc. 231 v6 to a 94 lt1
hello gentlemen! monte82ppe again here with another engine swap question. i say 'again' because i previously asked about a 231 v6 to a 350 swap in a 82 monte carlo. i recieved GREAT help which i sincerely appreciated from a number of members. well after doing more research and talking with junkyards i came across a much better upgrade. local yard has a94 impala lt1 with the matching 4l60 trans. i plan on pulling my v6 an th350 and selling it for weight since they are no good. the deal i get also comes with computer, wires, fuel pump, mounts and all. the impala itself had the back end bent up. i researched my ratio and i am certain i have the 2:73 so that will probably be changed to a 3:42. my question is WHAT AM I MISSING? like i said, i get engine, trans, computer, wires, pump, mounts, headers...i mean this is my first swap so im a little green. what do i need to focus on? what will be the challenging parts? what do i need to let the shop do? what performance will i get? i want to focus on more low end torque since its a daily driver and not a racer. quickness is my thing. speed at the point. top speed comes with farther down the equation. making mods to it will come later down the road. i just need to get it in first. so again thanks in advance for all comments
monte82ppe
monte82ppe
Monte Of The Month -- March 2013
Joined: Jun 2010
Posts: 8,442
From: michigan
The radiator, yours will be too small. Also This may be a question another member can answer cuz I'm not sure. Is the drive shaft from the th350 gonna fit the new trans and is it gonna be the same length?
And yes Chris The LT1 is a 5.7l v8 RWD
And yes Chris The LT1 is a 5.7l v8 RWD
Last edited by lougreen03; Aug 28, 2011 at 12:50 AM.
Monte Of The Month - February 2010
Joined: Apr 2009
Posts: 11,981
From: Pittsburgh, PA
sorry for the super huge post, but this is what I was checking out earlier....
this is from the "wiki" site!
Seventh generation (Impala SS, 1994–1996)
1995 Chevrolet Impala SS 4-door sedan Production February 1994 – December 1996 Model years 1994–1996 Assembly Arlington, Texas Body style 4-door sedan Layout FR layout Platform B-body Engine 5.7 L LT1 V8 Transmission 4-speed automatic Wheelbase 115.9 in (2,944 mm) Length 214.1 in (5,438 mm) Width 77 in (1,956 mm) Height 54.7 in (1,389 mm) Curb weight 4,221 lb (1,915 kg) Related In 1991, the GM B platform was extensively redesigned, though it retained the same shortened frame design of the 1977 redesign. The Impala SS badge was resurrected at the 1992 Detroit Auto Show as a concept car designed by GM designer Jon Moss. The concept car was two inches lower to the ground than the regular Caprice, and was powered by a 8.2-liter (500 cu in) engine. Eventually, the concept car's engine was replaced with a 5.7-liter (350 cu in) engine derived from the Corvette in order to show the public what would be offered if put into production (an off-road specification 510-cubic-inch (8.4 L) V8 was eventually put into the engine bay of the prototype years later).
1995 Impala SS 4-door sedan
The 1994 Impala SS went into production on February 14, 1994 at GM's plant in Arlington, Texas,[1] and was almost identical cosmetically to the concept car, the only noticeable change being the chromed bowtie logo on the grill (vs a red logo on the concept). The car was, in essence, a high-performance version of the Caprice. From a mechanical standpoint, it used the Caprice 9C1 police package as its base and as such got most of the equipment formerly available only to law enforcement and government agencies. This included a sport-tuned suspension with reinforced shocks and springs, a high-capacity reverse flow cooling system, (derived from the Corvette's LT1) larger four-wheel disc brakes, transmission cooler, dual exhaust, a higher-output electrical system, and other minor mechanical alterations. Not all of the police equipment was carried over however, as the Impala SS did not get the external oil-to-air engine oil cooler, nor were all the body mounts secured (the standard Caprice and Impala SS were assembled at the factory with the front 3 body mounts missing one of the rubber cushions, while the 9C1 was assembled with all rubber cushions in place), although both are popular aftermarket additions to the Impala SS by their owners.
The Impala SS was uniquely fitted with a standard 3.08 gear. The limited-slip rear differential was standard (as opposed to the option G80 on Caprices) and the suspension was an inch lower. A retuned LT1 5.7-liter (350 cu in) small-block V8 was standard on the Impala SS, making 260 horsepower (190 kW) and 330 pound-feet (450 N·m) of torque (retuned from the prototype's 300 horsepower (220 kW) rating). The primary difference between the LT1 in the Impala and the LT1 that was in the Corvette and Camaro was that the Impala engine was fitted with cast-iron cylinder heads instead of aluminum ones, and a camshaft that was designed more for low-end torque than high-end horsepower. Another difference was that the Impala LT1 had 2-bolt main bearing caps while the Corvette LT1 had 4-bolt main bearing caps. The transmission used in the car was the 4L60E, which was an electronically controlled version of the previously hydraulically controlled 4L60. However, the transmission was not beefed up for the power of the LT1, and transmission failures after 100,000 miles (160,000 km) were commonplace.[citation needed] A standard transmission was never available in the 1994–96 Impala SS. However there is a growing trend of replacing the 4L60-E transmission, with the T-56 (6-speed manual) from the Camaro and Firebird using aftermarket kits. Alternatively, a popular enhancement was the addition of a shift-kit and/or a more aggressive torque converter. Several other cars in the B/D-body line also shared a similar powertrain: these were the Chevrolet Caprice, Buick Roadmaster, and the [D-body] Cadillac Fleetwood which all shared the LT1 engine and 4L60E automatic transmission.
1996 Impala SS 4-door sedan
Cosmetically, the Impala SS received body-colored trim, which helped reduce the sometimes "bloated" look of the standard Caprice, a unique single-bar grille with no hood ornament and, a rear deck spoiler. It was fitted with 17-inch (430 mm) brushed aluminum wheels with 255/50ZR17 tires. Inside, the car came with a central console with cup holders (1994 and 1995 models) and a storage compartment, leather seats embroidered with the Impala SS logo, and a standard leather-wrapped steering wheel. For the 1994 model year, it was available only in black with a gray interior. Due to a shortage of the unique five-spoke aluminum wheels (manufactured by ROH in Australia), only 6,303 cars were sold. However, the wheel shortage was remedied for the 1995 model year and 21,434 cars were sold.
In 1995, Dark Cherry Metallic and Dark Grey Green were added as exterior color options, and the body paneling on the rear quarter panel was altered to reflect the cosmetic effect formerly achieved by a window insert. Another change from 1994 was the placement of the side mirrors from pods attached to the door to a larger format attached to the 'A' pillar. 1996 was the last year of production with 41,941 units sold. The 1996 Impala SS production went late into the model year; the last one being produced on December 13, 1996. It saw minor interior alterations, with the digital speedometer being replaced by an analog one, along with a tachometer. The shifter was moved from the column to the center console, and the engine was given an OBD-II computer control system (the camshaft was reground to adjust for the new computer).
A special ceremony was held at the plant on December 13, 1996[2] for M.G. "Pinky" Randall, a Chevrolet collector from Houghton Lake, Mich., who bought the last Impala SS. When Randall drove the car with the dark cherry-metallic paint off the line, he was accompanied by County Judge Tom Vandergriff in the front passenger seat. In the back seat were Mayor Richard Greene, plant manager Herb Stone and Lonnie Morgan, president of United Auto Workers Local 276, which represents about 1,900 of the plant's 2,100 employees. "I didn't think this last car would get publicity like this," said Randall, 69. The Impala becomes the 46th vehicle in Randall's Chevrolet collection.
The entire B/D-body line, consisting of the Chevrolet Caprice, Impala SS, Buick Roadmaster and Cadillac Fleetwood, was discontinued by General Motors, as GM wanted more assembly lines to be able to produce more profitable SUVs. Another fact was that the Caprice was the only B-body with a market share since fleet sales to law enforcement outnumbered sales of all other B-bodies. Additionally the Impala SS is not acknowledged as 'Impala SS' on owners' title or bill of sale. Therefore this version does not fall into a generation status as does the previous and newer models. Until further research is done and can be justified by General Motors, this Impala SS is merely a top of the line high-performance version of the 1991–1996 Chevrolet Caprice.[citation needed]
this is from the "wiki" site!Seventh generation (Impala SS, 1994–1996)
1995 Chevrolet Impala SS 4-door sedan Production February 1994 – December 1996 Model years 1994–1996 Assembly Arlington, Texas Body style 4-door sedan Layout FR layout Platform B-body Engine 5.7 L LT1 V8 Transmission 4-speed automatic Wheelbase 115.9 in (2,944 mm) Length 214.1 in (5,438 mm) Width 77 in (1,956 mm) Height 54.7 in (1,389 mm) Curb weight 4,221 lb (1,915 kg) Related In 1991, the GM B platform was extensively redesigned, though it retained the same shortened frame design of the 1977 redesign. The Impala SS badge was resurrected at the 1992 Detroit Auto Show as a concept car designed by GM designer Jon Moss. The concept car was two inches lower to the ground than the regular Caprice, and was powered by a 8.2-liter (500 cu in) engine. Eventually, the concept car's engine was replaced with a 5.7-liter (350 cu in) engine derived from the Corvette in order to show the public what would be offered if put into production (an off-road specification 510-cubic-inch (8.4 L) V8 was eventually put into the engine bay of the prototype years later).
1995 Impala SS 4-door sedan
The 1994 Impala SS went into production on February 14, 1994 at GM's plant in Arlington, Texas,[1] and was almost identical cosmetically to the concept car, the only noticeable change being the chromed bowtie logo on the grill (vs a red logo on the concept). The car was, in essence, a high-performance version of the Caprice. From a mechanical standpoint, it used the Caprice 9C1 police package as its base and as such got most of the equipment formerly available only to law enforcement and government agencies. This included a sport-tuned suspension with reinforced shocks and springs, a high-capacity reverse flow cooling system, (derived from the Corvette's LT1) larger four-wheel disc brakes, transmission cooler, dual exhaust, a higher-output electrical system, and other minor mechanical alterations. Not all of the police equipment was carried over however, as the Impala SS did not get the external oil-to-air engine oil cooler, nor were all the body mounts secured (the standard Caprice and Impala SS were assembled at the factory with the front 3 body mounts missing one of the rubber cushions, while the 9C1 was assembled with all rubber cushions in place), although both are popular aftermarket additions to the Impala SS by their owners.
The Impala SS was uniquely fitted with a standard 3.08 gear. The limited-slip rear differential was standard (as opposed to the option G80 on Caprices) and the suspension was an inch lower. A retuned LT1 5.7-liter (350 cu in) small-block V8 was standard on the Impala SS, making 260 horsepower (190 kW) and 330 pound-feet (450 N·m) of torque (retuned from the prototype's 300 horsepower (220 kW) rating). The primary difference between the LT1 in the Impala and the LT1 that was in the Corvette and Camaro was that the Impala engine was fitted with cast-iron cylinder heads instead of aluminum ones, and a camshaft that was designed more for low-end torque than high-end horsepower. Another difference was that the Impala LT1 had 2-bolt main bearing caps while the Corvette LT1 had 4-bolt main bearing caps. The transmission used in the car was the 4L60E, which was an electronically controlled version of the previously hydraulically controlled 4L60. However, the transmission was not beefed up for the power of the LT1, and transmission failures after 100,000 miles (160,000 km) were commonplace.[citation needed] A standard transmission was never available in the 1994–96 Impala SS. However there is a growing trend of replacing the 4L60-E transmission, with the T-56 (6-speed manual) from the Camaro and Firebird using aftermarket kits. Alternatively, a popular enhancement was the addition of a shift-kit and/or a more aggressive torque converter. Several other cars in the B/D-body line also shared a similar powertrain: these were the Chevrolet Caprice, Buick Roadmaster, and the [D-body] Cadillac Fleetwood which all shared the LT1 engine and 4L60E automatic transmission.
1996 Impala SS 4-door sedan
Cosmetically, the Impala SS received body-colored trim, which helped reduce the sometimes "bloated" look of the standard Caprice, a unique single-bar grille with no hood ornament and, a rear deck spoiler. It was fitted with 17-inch (430 mm) brushed aluminum wheels with 255/50ZR17 tires. Inside, the car came with a central console with cup holders (1994 and 1995 models) and a storage compartment, leather seats embroidered with the Impala SS logo, and a standard leather-wrapped steering wheel. For the 1994 model year, it was available only in black with a gray interior. Due to a shortage of the unique five-spoke aluminum wheels (manufactured by ROH in Australia), only 6,303 cars were sold. However, the wheel shortage was remedied for the 1995 model year and 21,434 cars were sold.
In 1995, Dark Cherry Metallic and Dark Grey Green were added as exterior color options, and the body paneling on the rear quarter panel was altered to reflect the cosmetic effect formerly achieved by a window insert. Another change from 1994 was the placement of the side mirrors from pods attached to the door to a larger format attached to the 'A' pillar. 1996 was the last year of production with 41,941 units sold. The 1996 Impala SS production went late into the model year; the last one being produced on December 13, 1996. It saw minor interior alterations, with the digital speedometer being replaced by an analog one, along with a tachometer. The shifter was moved from the column to the center console, and the engine was given an OBD-II computer control system (the camshaft was reground to adjust for the new computer).
A special ceremony was held at the plant on December 13, 1996[2] for M.G. "Pinky" Randall, a Chevrolet collector from Houghton Lake, Mich., who bought the last Impala SS. When Randall drove the car with the dark cherry-metallic paint off the line, he was accompanied by County Judge Tom Vandergriff in the front passenger seat. In the back seat were Mayor Richard Greene, plant manager Herb Stone and Lonnie Morgan, president of United Auto Workers Local 276, which represents about 1,900 of the plant's 2,100 employees. "I didn't think this last car would get publicity like this," said Randall, 69. The Impala becomes the 46th vehicle in Randall's Chevrolet collection.
The entire B/D-body line, consisting of the Chevrolet Caprice, Impala SS, Buick Roadmaster and Cadillac Fleetwood, was discontinued by General Motors, as GM wanted more assembly lines to be able to produce more profitable SUVs. Another fact was that the Caprice was the only B-body with a market share since fleet sales to law enforcement outnumbered sales of all other B-bodies. Additionally the Impala SS is not acknowledged as 'Impala SS' on owners' title or bill of sale. Therefore this version does not fall into a generation status as does the previous and newer models. Until further research is done and can be justified by General Motors, this Impala SS is merely a top of the line high-performance version of the 1991–1996 Chevrolet Caprice.[citation needed]
If u do swap to a lt1 check the water pump to make sure it isnt leaking cuz itll go right into the opti spark & if that looks old might be wise to change it & the plug wires cuz they are a pain & if u plan on doin a performance set up get some aluminum heads & have lloyd elliot port em & build u a cam with that & longtubes ull be in the low to mid 400hp rane & 500ftlb or torque
Thread Starter
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Joined: Jun 2011
Posts: 12
you know i thought about doing a cam, but my question is what kind can i get that would be more geared towards the low end torque side? thats what im trying to focus on for now since its a daily driver/college car. also about the aluminum heads vs iron heads, heres a link to a article comparing the two that i found interesting Comparing Aluminum And Iron Cylinder Heads - Car Craft Magazine
what do you all think about that???
monte82ppe
what do you all think about that???
monte82ppe
Look up lloyd elliot porting send him some emails & he will tell u exactly wat u need for low end torque & as far as aluminum heads, LT1s benifit from them with there reverse cooling set up they have
Joined: May 2011
Posts: 23
If it's LT1, leave it alone for now. save the money and check your water pump. If it's questionable, change it now. Hell of a lot easier to change the pump while engine is out, specially LT1 or later. If you can afford it, go with Alum. head. Save few pound (actually, more than a few pound) and usually can bump the CR about a point without any compromise.
From your post, you have a V-6 231 motor. LT1 is big enough difference from that stock 231. Graduate from collage first. Get a decent job afterwards, and get into cam and other stuff. If you're on computer, NORMALLY, you need to change the mapping in the computer to take full benefit of cam change. If the cam is stock-computer compatible, save your money for now and use it for the other stuff.
From your post, you have a V-6 231 motor. LT1 is big enough difference from that stock 231. Graduate from collage first. Get a decent job afterwards, and get into cam and other stuff. If you're on computer, NORMALLY, you need to change the mapping in the computer to take full benefit of cam change. If the cam is stock-computer compatible, save your money for now and use it for the other stuff.
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