lt-1 swap questions
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Joined: Aug 2005
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lt-1 swap questions
new to the site wuts up every1. got a lt-1/97fbody swap going on.
HERE IS THE BACKSTORY: about 5 years ago i got my 1st taste of an fbody in a 305 t/a gta and have been hooked ever since. car handled great but the engine was lacking IMO and it had this funky 9 bolt disc rear in it that no1 made parts for.
i told myself if the motor ever died id do it a little justice. about 1 year later it pooped on me. 1st thing was that rear that the clutch packs had worn out on. ended up going to a 7.5 disc rear out of another fbody. next was the rear suspension it got koni adjustable shocks, a new panhard bar, which is by far the best 100 bux i ever spent and IMO the best suspension mod one can do to their fbody, new poly bushings, new poly endlinks, kept the stock sway bar in b/c all the aftermarket ones were the same diameter as the stocker, and subframe connectors. also when i swapped in the new motor i also used ploy engine and tranny mount.
i decided to go with a lt-1 swap after it was all said and done.
had a good job going at the time and started the swap, motor is in, exhaust is done, fuel lines are done, powersteering lines, computer flashed, harness done, oil cooler was setup and mounted. all was going good until i got laid off and after a string of crappy jobs, fast foward 4 years and i have a decent job and like to pick up where i left off.
END BACKSTORY
unlike be4 when i was paying some1 to do the labor and research i have to do it all myself now. i am not mechanically inept so don't take it that way, i just didn't have the time but the cash be4? now that i have substantially less cash, i suppose i will have to make time
1st thing is the radiator: is the stock rad adequate to cool the lt-1? next, is there any special way to hook up the hoses b/c of the reverse flow heads on the lt-1? also a little FYI the tranny cooler in the rad is getting plugged and i am going with an external cooler.
next is the oil pressure sending unit: to hook up the stock guage in my bird, can i just splice into the lt1 sending unit and the guage will work or do i have to remove the lt-1 unit and use the original sender? FYI the fuel cutoff has been bypassed
next is the coolant temp guage sending unit: i am assuming it is the sending unit screwed into the passenger side head. can i splice into that or rig up something to make the firebird unit screw in?
next is the throttle linkage: any tips on that?
next is the tranny: for cash constraints(i know it will bite me in the *** later) but i went with the 700r4. i hear summit sells a little lockup kit for these so is that sufficient then?
also as above on the linkage any tips for the tv cable?
the egr bypass: from a little reading i hear there is blockoff kits for sale on ebay. i removed the metalhose from the back of the intake and from around the motor and that air pump.
ok on the back of the intake next to the metal hose there is a large round object next to it with vacuum hoses on it as well as a 2 wire connector, is this also part of the egr and hence removed and blocked off?
last is the tb coolant bypass i notice 1 end plugs into the intake and the line runs into the tb and another kinda goes around and such. is this as simple as unscrewing the 2 nipples and putting plugs in? als which side is the feed and which the return?
sorry about the lengthy post i will keep them shorter in the future. thanx for reading.
HERE IS THE BACKSTORY: about 5 years ago i got my 1st taste of an fbody in a 305 t/a gta and have been hooked ever since. car handled great but the engine was lacking IMO and it had this funky 9 bolt disc rear in it that no1 made parts for.
i told myself if the motor ever died id do it a little justice. about 1 year later it pooped on me. 1st thing was that rear that the clutch packs had worn out on. ended up going to a 7.5 disc rear out of another fbody. next was the rear suspension it got koni adjustable shocks, a new panhard bar, which is by far the best 100 bux i ever spent and IMO the best suspension mod one can do to their fbody, new poly bushings, new poly endlinks, kept the stock sway bar in b/c all the aftermarket ones were the same diameter as the stocker, and subframe connectors. also when i swapped in the new motor i also used ploy engine and tranny mount.
i decided to go with a lt-1 swap after it was all said and done.
had a good job going at the time and started the swap, motor is in, exhaust is done, fuel lines are done, powersteering lines, computer flashed, harness done, oil cooler was setup and mounted. all was going good until i got laid off and after a string of crappy jobs, fast foward 4 years and i have a decent job and like to pick up where i left off.
END BACKSTORY
unlike be4 when i was paying some1 to do the labor and research i have to do it all myself now. i am not mechanically inept so don't take it that way, i just didn't have the time but the cash be4? now that i have substantially less cash, i suppose i will have to make time
1st thing is the radiator: is the stock rad adequate to cool the lt-1? next, is there any special way to hook up the hoses b/c of the reverse flow heads on the lt-1? also a little FYI the tranny cooler in the rad is getting plugged and i am going with an external cooler.
next is the oil pressure sending unit: to hook up the stock guage in my bird, can i just splice into the lt1 sending unit and the guage will work or do i have to remove the lt-1 unit and use the original sender? FYI the fuel cutoff has been bypassed
next is the coolant temp guage sending unit: i am assuming it is the sending unit screwed into the passenger side head. can i splice into that or rig up something to make the firebird unit screw in?
next is the throttle linkage: any tips on that?
next is the tranny: for cash constraints(i know it will bite me in the *** later) but i went with the 700r4. i hear summit sells a little lockup kit for these so is that sufficient then?
also as above on the linkage any tips for the tv cable?
the egr bypass: from a little reading i hear there is blockoff kits for sale on ebay. i removed the metalhose from the back of the intake and from around the motor and that air pump.
ok on the back of the intake next to the metal hose there is a large round object next to it with vacuum hoses on it as well as a 2 wire connector, is this also part of the egr and hence removed and blocked off?
last is the tb coolant bypass i notice 1 end plugs into the intake and the line runs into the tb and another kinda goes around and such. is this as simple as unscrewing the 2 nipples and putting plugs in? als which side is the feed and which the return?
sorry about the lengthy post i will keep them shorter in the future. thanx for reading.
Last edited by mrfbody; Aug 13, 2005 at 08:29 PM.
Member
Joined: Nov 2001
Posts: 356
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From: Colorado Springs, CO
Car: 84 Trans Am
Engine: 350
Transmission: 700R4
Axle/Gears: 3.73
Welcome to the board. While this is the engine swap board if you look at the top of the page there a link that says LTx and LSx, that is the best place to look and ask questions about an LT1 swap, also the search feature is awesome and chances are most if not all of the answers to your questions can be found with a search. Once again welcome and good luck with the swap. 
Thread Starter
Junior Member
Joined: Aug 2005
Posts: 51
Likes: 0
topic re-posted in right forum. admin, plz delete thread here.
gee, other than the incorrect forum/topic/thread.
thanx for nothing. i have used the search feature and pulled up about 200 hits of stuff that has nothing to do with what i am looking for.
i was hoping if peeps had done this be4, they might know off the top of their head and help a guy out.
honestly, other than swapping in a ferrari motor i am sure almost every question on here has been asked be4 at some point and yet i get the hard time.
gee, other than the incorrect forum/topic/thread.
thanx for nothing. i have used the search feature and pulled up about 200 hits of stuff that has nothing to do with what i am looking for.
i was hoping if peeps had done this be4, they might know off the top of their head and help a guy out.
honestly, other than swapping in a ferrari motor i am sure almost every question on here has been asked be4 at some point and yet i get the hard time.
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