Caprice LT1 intake, is it the same as f-body LT1?
02-06-2006, 05:23 AM
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Caprice LT1 intake, is it the same as f-body LT1?
Hi, I asked this on the TPI board and didn't get an answer so I thought I'd try over here too. I want to do the LT1 conversion and I have a chance to buy an intake off a Caprice, but I'm not sure if the manifolds are the same. Can anyone tell me if there are any differences?
02-06-2006, 02:12 PM
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Car: 1991 Camaro RS
Engine: 383 LT1
Transmission: T56
Axle/Gears: 4.10
Also, If you plan to do the LT1 intake swap, dont forget that you have to modify it for a distributor hole as the LT1 uses the optispark which is on the front of the engine behind the water pump. If you dont have the resources to modify an intake like that, there are people that sell an already modified intake at a reasonable price. Just FYI.
02-07-2006, 02:40 AM
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Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
Originally posted by 1991 RS/SS
same intake, should be the same even if the caprice has a L99 (4.3 L verson of the LT1) IIRC.
same intake, should be the same even if the caprice has a L99 (4.3 L verson of the LT1) IIRC.
https://www.thirdgen.org/techbb2/sho...hreadid=344910
02-08-2006, 02:50 AM
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Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
They are smaller all the way through. To me you would have a lot of porting to make a L99 equal to a LT1 intake. I really don't know how long it would take as I am not a porter.
02-08-2006, 07:26 AM
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Sounds like the L99 intake would be ideal in keeping low-speed torque on a 305 while boosting its HP substantially.
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02-08-2006, 12:42 PM
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Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
Exactly, smaller ports for a smaller engine. I would think it would be perfect for the smaller 305 considering it was designed for the tiny 4.3L V-8 in the Caprice.
05-12-2006, 06:10 AM
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, LT1
Transmission: TKX, 4L60E
Axle/Gears: 3.42, 3.23
Originally Posted by Fast355
Sounds like the L99 intake would be ideal in keeping low-speed torque on a 305 while boosting its HP substantially.
personally, I think the LT1 intake is too much work + ugly, even for a high HP 350.. Let alone a 305.
-- Joe
06-17-2007, 11:44 PM
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Car: 1999 subaru forester GT (urgh)
Engine: ej20 turbo
Transmission: 5speed
Axle/Gears: 4.11:1 awd
Prob!
I just got an "lt1" intake off ebay, but it's casting number is 12552138. I read somewhere this means it's an L99 intake. I measured the ports and the dimensions are almost exactly as above (however it has been ported).
I feel like i got screwed. It's going on my L98.
Whats goin on?
I feel like i got screwed. It's going on my L98.
Whats goin on?
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