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09-28-2012, 01:10 PM
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#1
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Join Date: Oct 2011
Location: old bridge
Posts: 6
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Lt4 swap?
I was under the impression that dropping a lt4 in my 96 z would be a direct swap an I wouldn't need anything else but now I'm hearing it from both sides?  any help would be appreciated
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RIP 95 Trans Am
Hello 96 z28
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09-28-2012, 01:12 PM
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#2
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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What do you mean by lt4? What are you trying to do and what is the story with your current motor?
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09-28-2012, 01:31 PM
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#3
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Join Date: Jul 2005
Location: Williamstown NJ
Posts: 479
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Isnt the LT4 just a LT1 with high performance Heads & Cam?
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F-Bodyless 
01 GMC Sierra C3 6.0L, AWD, Westers Tune, K&N, Hella LED Tails
03 Pontiac Grand Prix GT, GMPP Handling Kit, LS1 F-Body Brakes
Last edited by Mark B; 09-28-2012 at 01:32 PM.
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09-28-2012, 01:35 PM
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#4
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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Quote:
Originally Posted by Mark B
Isnt the LT4 just a LT1 with high performance Heads & Cam?
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Something like that. Depends what the OP is asking.
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09-28-2012, 02:11 PM
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#5
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Join Date: Oct 2011
Location: old bridge
Posts: 6
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Quote:
Originally Posted by sweetbmxrider
Something like that. Depends what the OP is asking.
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Sorry my question is will I need any additional parts to make it work since they are so similar
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RIP 95 Trans Am
Hello 96 z28
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09-28-2012, 02:36 PM
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#6
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12 Second Club / Bullwinkle
Join Date: Oct 2010
Location: Old Bridge, NJ/Corpus Christi, TX
Posts: 1,847
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Swapping longblocks? Should go right in. Dont really see any big gains to be had for all of the work to do it tho...
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1994 Medium Patriot Red Z28 6spd
370ci/Huron Speed T6 S480 ET-R HO
Quote:
Originally Posted by Jersey Mike
Quote:
Originally Posted by WSex
who is FFB?
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An NJFBOA legend. Ask about him at the next meet. |
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09-28-2012, 10:07 PM
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#7
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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Quote:
Originally Posted by BLACKMAMBA
Sorry my question is will I need any additional parts to make it work since they are so similar
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What are you swapping and why are you? I just don't want to see you waste money especially if you are chasing power. Just need more info with what you are doing to give my advice. If you could be as thorough as possible, I'd be glad to post my opinion in what you should do especially $/pony.
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09-29-2012, 12:51 PM
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#8
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Join Date: Oct 2011
Location: old bridge
Posts: 6
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well i was supposed to be swapping in a lt1 because mine threw a rod through the oil pan.. bought what i thought was a lt1 and now have been told it is a lt4. now im in the process of trying to find exactly what it is. this is what i found
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RIP 95 Trans Am
Hello 96 z28
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09-29-2012, 04:01 PM
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#9
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by BLACKMAMBA
well i was supposed to be swapping in a lt1 because mine threw a rod through the oil pan.. bought what i thought was a lt1 and now have been told it is a lt4. now im in the process of trying to find exactly what it is. this is what i found
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Block casting won't tell you.
What are the numbers on the heads? If you don't want to pull a valve cover, look inside the oil cap/valve cover holes and see what the rockers look like.
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09-29-2012, 04:32 PM
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#10
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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Pull oil pan, see 2 bolt, and have some LT1.
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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09-29-2012, 04:42 PM
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#11
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12 Second Club / Bullwinkle
Join Date: Oct 2010
Location: Old Bridge, NJ/Corpus Christi, TX
Posts: 1,847
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Quote:
Originally Posted by LTb1ow
Pull oil pan, see 2 bolt, and have some LT1.
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Was just about to say the same thing. 2 bolt mains is an LT1 all the time. 4 bolt mains is either a vette lt1 or an lt4
__________________
1994 Medium Patriot Red Z28 6spd
370ci/Huron Speed T6 S480 ET-R HO
Quote:
Originally Posted by Jersey Mike
Quote:
Originally Posted by WSex
who is FFB?
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An NJFBOA legend. Ask about him at the next meet. |
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09-30-2012, 12:16 PM
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#12
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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Quote:
Originally Posted by BLACKMAMBA
well i was supposed to be swapping in a lt1 because mine threw a rod through the oil pan.. bought what i thought was a lt1 and now have been told it is a lt4. now im in the process of trying to find exactly what it is. this is what i found
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Post some pics of entirely what you got, like full motor etc.
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10-04-2012, 05:10 PM
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#13
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Join Date: Oct 2011
Location: old bridge
Posts: 6
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Quote:
Originally Posted by sweetbmxrider
Post some pics of entirely what you got, like full motor etc.
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sorry ive been knee deep in work the last few days..here are the pics
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RIP 95 Trans Am
Hello 96 z28
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10-04-2012, 05:11 PM
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#14
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Stalker
Join Date: Aug 2004
Posts: 12,078
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Its an LT1, the swap is straight forward.
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10-04-2012, 05:12 PM
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#15
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Yup. That's an LT1.
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10-04-2012, 05:31 PM
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#16
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Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,676
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Looks like a fast one...probably a 93! lol
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John
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10-04-2012, 08:49 PM
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#17
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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Yeah, looks like a 92-93 lt1.
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10-04-2012, 09:03 PM
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#18
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Join Date: Dec 2004
Location: manchester, NJ
Posts: 1,775
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what year is your car? early lt1s are speed density. Not an expert but that will prob have effect on ecm and stuff no?
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97 Firebird Formula - 383LT1
15 Subaru WRX - 2.0L-turbo
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10-04-2012, 09:19 PM
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#19
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,342
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I am assuming he is using the motor only and reusing his sensors and wiring harness. Really the best thing for the op do is put the motors side by side and swap everything over. Things like the timing cover and gear set, knock sensor, reluctor wheel, intake manifold, fuel rail and injectors, and so on should be swapped. I believe the camshafts are different as well so technically he should swap them.
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10-04-2012, 10:57 PM
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#20
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Join Date: Feb 2010
Location: Stillwater
Posts: 822
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Quote:
Originally Posted by coolmanvette75
Swapping longblocks? Should go right in. Dont really see any big gains to be had for all of the work to do it tho...
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Since the LT4 came in the vets the oil pan is different and will not work.
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Quote:
Originally Posted by LTb1ow
...its cool to like diesels, cause that and pretending to be country is like, hip nowadays!!
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10-04-2012, 11:00 PM
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#21
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Stalker
Join Date: Aug 2004
Posts: 12,078
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Quote:
Originally Posted by zraffz
Since the LT4 came in the vets the oil pan is different and will not work.
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LT4s also came in some f bods, like some 96 SS cars
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10-04-2012, 11:02 PM
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#22
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Join Date: Sep 2006
Location: north jersey
Posts: 1,680
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I put a 92 vette lt1 in my trans am and it fit(using the corvette pan)
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10-05-2012, 02:12 AM
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#23
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Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,676
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Quote:
Originally Posted by sweetbmxrider
Yeah, looks like a 92-93 lt1.
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Not a 92, the fuel lines are on the wrong side for a 92.
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John
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10-05-2012, 02:17 AM
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#24
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Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,676
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Quote:
Originally Posted by V
LT4s also came in some f bods, like some 96 SS cars
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97 SS and 97 Firehawks.
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John
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10-05-2012, 06:39 AM
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#25
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Join Date: Dec 2004
Location: manchester, NJ
Posts: 1,775
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yea i know if you swap all sensors and hardwear it will work i was just tryen to see if if knew that because hes making it sound like hes pulling his old motor and dropping this one in plug and play and if its not the same year then he will have issues..
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97 Firebird Formula - 383LT1
15 Subaru WRX - 2.0L-turbo
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