Engine Swap Everything about swapping an engine into your Third Gen.....be it V6, V8, LTX/LSX, crate engine, etc. Pictures, questions, answers, and work logs.

350 or 455

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Old May 15, 2004 | 08:54 PM
  #51  
LT1guy's Avatar
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From: Woodstock, GA
Car: 1987 Trans Am
Originally posted by Kross4031
maybe this time
Looks great! Where'd you get the aluminum pullies BTW?
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Old May 15, 2004 | 09:12 PM
  #52  
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Dude, that is one sweet motor, and I imagine one sweet car too. It's got a lot of originality.
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Old May 15, 2004 | 09:14 PM
  #53  
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From: Staunton,illinois
Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
yeah its definatley gonna be unique
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Old May 16, 2004 | 02:14 AM
  #54  
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Joined: Apr 2004
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From: Michigan
Car: 86 IROC
Engine: Pontiac 455
Transmission: TH350
the pulleys are all march performance based out of westland mi. they are billet aluminum and they were not cheap. hell, nothing with this car is cheap so far. the car looks like *** on the 5th work day woith no shower. but it is a work in progress. i have a pic of the car before i yanked that tiny *** 350, to give you an idea of what the car looks like.
Attached Thumbnails 350 or 455-picture-008.jpg  

Last edited by Kross4031; May 16, 2004 at 02:18 AM.
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Old May 16, 2004 | 11:08 AM
  #55  
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From: Staunton,illinois
Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
there all a work in progress ...lol...i dont think that any thing anyone owns will ever be 100% done ...i know my cars never will ill always find something i wanna do to em .....
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Old May 16, 2004 | 11:52 AM
  #56  
Project: 85 2.8 bird's Avatar
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Joined: Jul 2001
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From: BFE, MD
Car: 13 Ram 1500/ 78 Formy
Engine: 5.7 / 7.4
Transmission: 6sp / TH350
Axle/Gears: 3.55 posi / 3.23
Gotta love that Poncho Blue

I guess you;ll be going to Pontiac & Chevy car shows when you're done
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Old May 16, 2004 | 03:30 PM
  #57  
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From: Michigan
Car: 86 IROC
Engine: Pontiac 455
Transmission: TH350
hell, i'll be going to ford shows as well. lol.
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Old May 16, 2004 | 10:53 PM
  #58  
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From: Staunton,illinois
Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
just remeber to be nice when you go to them blue oval shows..lol..them guys are kinda hatefull to the bowtie..LMAO
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Old May 19, 2004 | 03:33 PM
  #59  
birdlvr's Avatar
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Joined: Apr 2004
Posts: 88
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From: Dallas, Ga
Car: 85 Firebird
Engine: 350
Transmission: th350
Axle/Gears: 3.42
Hey Kross,
I would love to see a pic of the 455 installed in your Iroc
I planning to put a 400 in mine and would like to get an idea what it would look like.
Daryl
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Old May 20, 2004 | 02:55 AM
  #60  
Kross4031's Avatar
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From: Michigan
Car: 86 IROC
Engine: Pontiac 455
Transmission: TH350
i managed to find a pic when i was gettin it ready. i thought i did not have one but ya never know what you'll find when you forget where you put it. lol at the highest point the air cleaner is 7" from the hood line. the alternator is even above the hood line by 2". can you say ... "new hood" lol
Attached Thumbnails 350 or 455-picture-054.jpg  
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Old May 21, 2004 | 01:28 AM
  #61  
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From: Staunton,illinois
Car: 1966 impala , 1998 sebring vert,1978 buick regal turbo, 1991 chevy silverado 3/4ton 4x4 lifted
Engine: 283, 2.5,3.8 turbo 350
Transmission: powerglide,auto overdrive, th350,4L80
no doubt but dang thats gotta be a fun ride .....looks good in there man
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Old May 21, 2004 | 03:03 AM
  #62  
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Joined: Apr 2004
Posts: 82
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From: Michigan
Car: 86 IROC
Engine: Pontiac 455
Transmission: TH350
it is pretty fun ... what's really fun is out runnin those brand new corvette's. they just gimme a dumb look as i pass em up. lol
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Old May 21, 2004 | 07:04 AM
  #63  
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From: HAUNTING THE CHAPEL
Car: '87 Mustang LX
Engine: 5.0
Transmission: T-5
Originally posted by Kross4031
i managed to find a pic when i was gettin it ready.
Cool. Care to list any specs on it? What heads are you running?
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Old May 21, 2004 | 11:28 AM
  #64  
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Joined: Apr 2004
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From: Michigan
Car: 86 IROC
Engine: Pontiac 455
Transmission: TH350
where do i start... lol. it ia a 1970 455 with a holley 750 double pumper, edelbrock performer rpm intake, 1.6:1 roller rockers, hydraulic flat tappet lifters, crane cams (284ºDuration @ .050: 228°Lobe Separation: 112°Gross Lift: .480''RPM Range: 2800-6200), the heads are stock, they have surfaced (.010") the block is bored .030" over and has been surfaced .010". the pistons are aluminum (domed), gives me aprox 12:1 compression.the whole unit has been balanced. arp studs all around. 4-bolt mains. the trans is a 1977 turbo 350. b&m 2400 stall and shift kit. racing clutches, racing sprague gears, kevlar bands. the rearend is stock with a limited slip 3.24 gear. i cruise at 75 @2800rpm. get about 9 mpg. dont know exacty how fast it is .... but it'll put you back in the seat.
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