FAQ - LT1 Cam related questions ALLGOHERE
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Car: 92 RS, 02 Tacoma, 2 73 Porsche 914s
LT1 Cam related questions ALL GO HERE
Please, if you have any LT1 Cam swap related questions. DO A SEARCH or post here.
DO NOT START A NEW THREAD.
This will eventually contain every question and answer relating to the topic, so use this post please. Thank you.
Also, if you know the answer is in another thread or find it after posting your question here... POST A LINK TO IT HERE. Thank you.
Just trying to clean up redundant topics...
Thanks for your help in making Thirdgen better.
DO NOT START A NEW THREAD.
This will eventually contain every question and answer relating to the topic, so use this post please. Thank you.
Also, if you know the answer is in another thread or find it after posting your question here... POST A LINK TO IT HERE. Thank you.
Just trying to clean up redundant topics...
Thanks for your help in making Thirdgen better.
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Car: 91 RS
Engine: LO3
Transmission: T-5
duration and lsa
i followed a link that shifty had posted in another thread about lt1 cam specs. my cam is a 95 z28 cam. the spec sheet read as follows: dur-230/208, lift-450/460, and lsa-116. my question is, is the 230 correct, or is it a typo? and is the 116 lsa correct?
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Car: '89 Formula, '97 Z28, '88 Formula 350
Engine: 305 TBI(LO3)
Transmission: TH700R4(MD8)
LT1 Cam Specs '94-'95
I'm a member a http://www.fbody.com and own a '97 Z28. Everyone over there says '94-'95 cams are as follows....... Dur:203intake & 208exhaust, Lift:.450intake & .460exhaust, Lobe Sepration:116. This is with 1.5 rocker arms.
I just got a '94 Z28 cam myself. Check out http://www.f-body.org for more info, there full of info on 1st, 2nd, 3rd and 4th gen F-bodys.
I just got a '94 Z28 cam myself. Check out http://www.f-body.org for more info, there full of info on 1st, 2nd, 3rd and 4th gen F-bodys.
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duh i didnt use the rite search terms. here are the specs for the cam i have in my 305:
GM 205 207 447 459 477 490 117 LT1 stock ('96)
Since i dont know anything about cams I assume that this is better then the peanut cam it cam with?
GM 205 207 447 459 477 490 117 LT1 stock ('96)
Since i dont know anything about cams I assume that this is better then the peanut cam it cam with?
Last edited by Z28GEN3; 01-09-2004 at 07:08 PM.
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Car: '89 Formula, '97 Z28, '88 Formula 350
Engine: 305 TBI(LO3)
Transmission: TH700R4(MD8)
Yea, the '92 & '93 has a different cam, the '94 & '95 had there own and then the '96 and '97 had there own too.
Last edited by chevypower; 01-10-2004 at 10:31 PM.
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Are the distributer gears the same on the '96 LT1 camshafts as they are on the stock cams? I tryed to drop in my distributor but it doesnt want to fully seat on the manifold and the holddown clamp wont reach that hi up.
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Car: 92RS
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Transmission: 700R4
Yes the gears are the same. Your oil pump shaft is driven by the end of the distributer shaft,and the slot on the pump shaft is not lined up with the tang on the dissy shaft. Turn the oil pump shaft alittle (the right direction) and the distributer should fall in all the way.
Good luck
Good luck
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Car: 96 Silverado/99 Suburban
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Found a thread with QUITE A BIT of useful info. Here's the link! Any questions about it please post them here...
https://www.thirdgen.org/techbb2/sho...hreadid=217507
Bruce (90RS305)
https://www.thirdgen.org/techbb2/sho...hreadid=217507
Bruce (90RS305)
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Car: '89 Formula, '97 Z28, '88 Formula 350
Engine: 305 TBI(LO3)
Transmission: TH700R4(MD8)
What springs to use with LT1 cam in LO3?
I need to know what springs to use with my LT1 cam swap? Its going in my LO3. I would like to spend as little as possiable as I'm building a 388SBC for the car now. The LT1 cam was gave to me for only $15 shipping. So I figiured what the he||, why not try it. I talked to http://www.tbichips.com and he said he would burn a chip for the LT1 cam eqiupped LO3 for $44. Then we could datalog if need be(I feel sure it would). Someone please help on the springs though. Some part #'s would be really nice. Thanks, Bobby
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Car: 1991 Camaro RS
Engine: Briggs & Straton
Transmission: Centrifical Clutch
94-95 has .450/.460 lift and 96-97 has .449/.462 I Believe...don't quote me on that.
As for 92-93...I have no idea.
As for 92-93...I have no idea.
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Car: 1991 Camaro RS
Engine: Briggs & Straton
Transmission: Centrifical Clutch
People say that the stock GM heads CAN be good for up to .480 lift but most people won't go much past .460 on stock heads. Thats what makes the LT1 cam so great for our cars...they're right at the maximum lift and have great tuneability.
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Car: '89 Formula, '97 Z28, '88 Formula 350
Engine: 305 TBI(LO3)
Transmission: TH700R4(MD8)
BadBlue91RS,
So your saying that the LO3(305 TBI) springs will be good with the LT1 cam? I hope so. I don't want to put much money in the 305 as I have a 388 in the shop being put together now.
Thanks, Bobby
So your saying that the LO3(305 TBI) springs will be good with the LT1 cam? I hope so. I don't want to put much money in the 305 as I have a 388 in the shop being put together now.
Thanks, Bobby
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Car: 86 Z28
Engine: 305
Transmission: 700r4
Axle/Gears: TBD
Originally posted by Berlinetta
could you pass emissions with an LT1 cam?
could you pass emissions with an LT1 cam?
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Car: '02 Z06
Engine: L33 5.7
Transmission: T56
Axle/Gears: Stock IRS
i know over at jegs they have this
# 270-114142
Serious performance for modified 305 5-spd. & 350 w/3.73-up.
Adv. Duration: 272º/284º
Gross Lift: .454''/.480''
Series: 2050
and its smog legal
# 270-114142
Serious performance for modified 305 5-spd. & 350 w/3.73-up.
Adv. Duration: 272º/284º
Gross Lift: .454''/.480''
Series: 2050
and its smog legal
#20
okay, I'm picking up a lt1 cam and plan to put it in as soon as the weather heats up. I need to know all the parts I'm going to need along with the tools to do a full swap. Also, are there any parts i should replace since i have 90,000 on the car? What's the best way to go if i want to get this done in under 250 excluding the cam? Is that too low or enough to fund the project? Also, can any write up a small how-to for me? I'm going to be taking an engine apart for the first time so I'm interested in all the help I can get.
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Car: 1988 iroc-z all stock for now
Engine: LB9 305
Transmission: 700R4 3.42 posi rear
LT1 cam in tpi
i have a comp cams LT1 cam and wanted to now how easy is the installation into the 305, the specs on the cam are 212-218* 488-495" lift also would it benefit from freer flowing heads and intake???
#23
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Originally posted by chevypower
BadBlue91RS,
So your saying that the LO3(305 TBI) springs will be good with the LT1 cam? I hope so. I don't want to put much money in the 305 as I have a 388 in the shop being put together now.
Thanks, Bobby
BadBlue91RS,
So your saying that the LO3(305 TBI) springs will be good with the LT1 cam? I hope so. I don't want to put much money in the 305 as I have a 388 in the shop being put together now.
Thanks, Bobby
will the stock LO3 springs be ok for the LT1cam ???
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by _max_
will the stock LO3 springs be ok for the LT1cam ???
will the stock LO3 springs be ok for the LT1cam ???
#26
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Car: 90 T/A
Engine: hopefully an LT1
Transmission: 700r4
so if an LT1 cam works in the standard small block can I use the small cap hei on an LT1 engine to delete the optispark?
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Car: 1991 Chevy Camaro
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3.42
Originally posted by Dave Sigman
so if an LT1 cam works in the standard small block can I use the small cap hei on an LT1 engine to delete the optispark?
so if an LT1 cam works in the standard small block can I use the small cap hei on an LT1 engine to delete the optispark?
http://www.hawksthirdgenparts.com/in...?v=1&pid=21192
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Originally posted by Farfire70
Shifty, did you ever get that tech article typed up on the LT1 swap?
Shifty, did you ever get that tech article typed up on the LT1 swap?
Originally posted by Dave Sigman
so if an LT1 cam works in the standard small block can I use the small cap hei on an LT1 engine to delete the optispark?
so if an LT1 cam works in the standard small block can I use the small cap hei on an LT1 engine to delete the optispark?
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Car: 1988 Camaro Sport Coupe
Engine: 305 TBI
Transmission: 700R4
this may be rediculous but shifty on your write up im assuming you pulled the engine out of the car, can you do this swap without having to pull the engine? if so how are you able to slide the cam in from the correct angle without hitting the radiator or anything like that. and do 1.6 rockers with this cam make a good combo?
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Car: 1991 Chevy Camaro
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3.42
Here's the thread on how to do it:
https://www.thirdgen.org/techbb2/sho...hreadid=262466
Yes, you have to remove the radiator and move the AC condensor aside (the piece in front of the radiator). But, no, you do not have to remove the engine. You would definetely have to change the springs to run an LT1 cam and 1.6 RRs. The stock springs can just barely handle the LT1 cam, so adding 1.6 RR is going to require some more serious valve springs. I couldn't tell you what kind, though.
https://www.thirdgen.org/techbb2/sho...hreadid=262466
Yes, you have to remove the radiator and move the AC condensor aside (the piece in front of the radiator). But, no, you do not have to remove the engine. You would definetely have to change the springs to run an LT1 cam and 1.6 RRs. The stock springs can just barely handle the LT1 cam, so adding 1.6 RR is going to require some more serious valve springs. I couldn't tell you what kind, though.
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Car: 89 RS
Engine: 305 TBI 215,000+
Transmission: T-5
Originally posted by MrDude_1
since it was a b!tch to find because everyone just linked to this thread:
since it was a b!tch to find because everyone just linked to this thread:
john
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Car: '90 RS
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Originally posted by frogmanjohn
on the chart of cams for the lt1 up there the bottom 2 show 93-96 lt1/lt4. with different lifts than the above ones. what is the dif between the 93 y-body and the bottom 2 cams?
john
on the chart of cams for the lt1 up there the bottom 2 show 93-96 lt1/lt4. with different lifts than the above ones. what is the dif between the 93 y-body and the bottom 2 cams?
john
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Car: 1983 Trans-Am
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Re: FAQ - LT1 Cam related questions ALLGOHERE
so If im using 1.6 RR with mine, any springs you guys could suggest?
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Car: 89 Firebird Formula
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Re: FAQ - LT1 Cam related questions ALLGOHERE
Sorry to bring this thread back but i was just told this:
Only problem you will have is the stock LT1 cam and all LT1 cams are all roller cams. Your GM TBI engine is a hydraulic flat tappet so you would need to buy the spider and OEM roller lifters if you block as the bosses for the roller lifter retainer spider. If not you would just be better off with a cheapie Wolverine flat tappet camshaft kit or a cheap COMP flat tappet cam kit with new flat tappet lifters
I dont need to change anything right?
Only problem you will have is the stock LT1 cam and all LT1 cams are all roller cams. Your GM TBI engine is a hydraulic flat tappet so you would need to buy the spider and OEM roller lifters if you block as the bosses for the roller lifter retainer spider. If not you would just be better off with a cheapie Wolverine flat tappet camshaft kit or a cheap COMP flat tappet cam kit with new flat tappet lifters
I dont need to change anything right?
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Car: 91 Trans am
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Re: FAQ - LT1 Cam related questions ALLGOHERE
Sorry to bring this thread back but i was just told this:
Only problem you will have is the stock LT1 cam and all LT1 cams are all roller cams. Your GM TBI engine is a hydraulic flat tappet so you would need to buy the spider and OEM roller lifters if you block as the bosses for the roller lifter retainer spider. If not you would just be better off with a cheapie Wolverine flat tappet camshaft kit or a cheap COMP flat tappet cam kit with new flat tappet lifters
I dont need to change anything right?
Only problem you will have is the stock LT1 cam and all LT1 cams are all roller cams. Your GM TBI engine is a hydraulic flat tappet so you would need to buy the spider and OEM roller lifters if you block as the bosses for the roller lifter retainer spider. If not you would just be better off with a cheapie Wolverine flat tappet camshaft kit or a cheap COMP flat tappet cam kit with new flat tappet lifters
I dont need to change anything right?
There is also a "search" feature on the top, to use besfore making any new post on subjects that have already been disscussed many times. Enjoy assimilating the great information on TGO.
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Re: FAQ - LT1 Cam related questions ALLGOHERE
I read the sticky's. thats why i plan on doing this swap. That wasnt my statement. That was someones statement to me.
So i was just checking. I guess the guy that said it is a performance shop owner and wanted to make sure he was wrong so i can laugh at him.
So i was just checking. I guess the guy that said it is a performance shop owner and wanted to make sure he was wrong so i can laugh at him.
#38
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Car: '90 RS
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Re: FAQ - LT1 Cam related questions ALLGOHERE
Sorry to bring this thread back but i was just told this:
Only problem you will have is the stock LT1 cam and all LT1 cams are all roller cams. Your GM TBI engine is a hydraulic flat tappet so you would need to buy the spider and OEM roller lifters if you block as the bosses for the roller lifter retainer spider. If not you would just be better off with a cheapie Wolverine flat tappet camshaft kit or a cheap COMP flat tappet cam kit with new flat tappet lifters
I dont need to change anything right?
Only problem you will have is the stock LT1 cam and all LT1 cams are all roller cams. Your GM TBI engine is a hydraulic flat tappet so you would need to buy the spider and OEM roller lifters if you block as the bosses for the roller lifter retainer spider. If not you would just be better off with a cheapie Wolverine flat tappet camshaft kit or a cheap COMP flat tappet cam kit with new flat tappet lifters
I dont need to change anything right?
This was true for some of the truck 305 TBI motors. All the passenger car versions (b-body and F-body) were roller set-ups.
#39
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Car: 89 Firebird Formula
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Re: FAQ - LT1 Cam related questions ALLGOHERE
Lol the guy still dont believe me. but thanks for the response. just have to order the valve seals and the cam is ready for install.
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Car: 1990 Camaro RS
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Re: FAQ - LT1 Cam related questions ALLGOHERE
Can anyone answer the question as to whether the car'll pass smog with an LT-1 cam swap?
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Re: FAQ - LT1 Cam related questions ALLGOHERE
You will be fine. As long as you leave all your pollution equipment intact.
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Re: FAQ - LT1 Cam related questions ALLGOHERE
So my motor is almost all apart and ready for the cam. Dont know if i missed read or it wasnt posted. I ordered the springs you had listed but what retainers should i use? Would stock ones suffice?
#43
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Re: FAQ - LT1 Cam related questions ALLGOHERE
i put a big cam in my 97 SS last year. Now im thinking about putting the LT1 cam in my 91 RS. I'd prob reuse my lt1 springs too if they will work fine.
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Re: FAQ - LT1 Cam related questions ALLGOHERE
What is Comp talking about when they say the LT1 heads need machining for certain cams? I thought just the springs needed to be changed.
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