TBIThrottle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.
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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?
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.
__________________ '91 Camaro RS 305 TBI TH700R4 NOW TOTALED OUT
Moroso Air Filter, 4-Wire Heated O2 sensor, MSD GM Blaster Coil, Holley Blue Fuel Pump with Moroso Upgraded Spring, LT1 cam, BBK Underdrive Pulleys, Energy Suspension Tranny Mount, B&M Downshift Kit, B&M Transpak, B&M Drain Plug Kit, B&M Trick Shift fluid, Moroso 20lb radiator cap, Milodon 160* thermostat, Edelbrock Victor Water Pump,
Earl's Hyperfirm Stainless Brake lines,
Summit 1900 Stall Converter,
B&M Flexplate, AC Rapid Fire plugs,
Flowmaster Cat-Back Exhaust, Jet Fan Switch, 40-Below Water Weter,
Ultimate TBI mods, Tuning by TBIChips.com, Spoon Performance sway bar set, Removed EGR,
Removed Cat. Conv., Removed Smog Pump
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?
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.
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
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
__________________ '91 Camaro RS 305 TBI TH700R4 NOW TOTALED OUT
Moroso Air Filter, 4-Wire Heated O2 sensor, MSD GM Blaster Coil, Holley Blue Fuel Pump with Moroso Upgraded Spring, LT1 cam, BBK Underdrive Pulleys, Energy Suspension Tranny Mount, B&M Downshift Kit, B&M Transpak, B&M Drain Plug Kit, B&M Trick Shift fluid, Moroso 20lb radiator cap, Milodon 160* thermostat, Edelbrock Victor Water Pump,
Earl's Hyperfirm Stainless Brake lines,
Summit 1900 Stall Converter,
B&M Flexplate, AC Rapid Fire plugs,
Flowmaster Cat-Back Exhaust, Jet Fan Switch, 40-Below Water Weter,
Ultimate TBI mods, Tuning by TBIChips.com, Spoon Performance sway bar set, Removed EGR,
Removed Cat. Conv., Removed Smog Pump
Originally posted by chevypower 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
Look here for part #98214. They are springs for a LT1/Z28. You can also buy that springs in a kit part # VSA 3 by clicking here.
I have been looking at those springs for a while now. I have not used them, but they look like they'll work. You can probably search here on the board with those part numbers or something. But that seems like the best deal on springs that I can find.
Originally posted by chevypower Yea, the '92 & '93 has a different cam, the '94 & '95 had there own and then the '96 and '97 had there own too.
What is the difference between the '92 & '93, the '94 & '95, and the '96 and '97?
I saw a LT1 cam for sale from a 1996 Corvette LT1 with Only 40K Miles. Is that good? What are the specs of a 96 LT1 cam? Below are some pics.
And what piece is it that you have to cut off? I have a 1989 305 TBI. So I can use my stock hydraulic lifters, rods, and rocker arms? Would that be a good cam to get? And what is the maximum amount of miles on a LT1 cam you wouldn't wanna go over?
Originally posted by BadBlue91RS 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.
OOPS,, didn't mean to quote you, but, is there any other differences between the different year cams other than lift specs? How much lift can a 1989 305 TBI take?
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.
__________________ 1991 Camaro RS, 305 TBI, 700R4 2.73's
Custom exhaust w/ Dynomax Ultra Flo muffler, no cat, Hypertech stage II chip, Hypertech 176* fan switch, Hypertech 160* thermostat, K&N filter, Acell 8MM wires, and NKG Plugs.
NEWLY ADDED! Redn**k Line Locks! (no rear brakes )
Best Run To Date: 15.29@91.4
Originally posted by BadBlue91RS 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.
Can I still use my stock hydraulic lifters and rocker arms and rods? What is the tip that I have to shave off? And is there any other modifications that I have to do to get this cam to work?
Do I have to use a special timing set or anything? What timing set do I need for a LT1 cam in my 305 TBI block?
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
__________________ '91 Camaro RS 305 TBI TH700R4 NOW TOTALED OUT
Moroso Air Filter, 4-Wire Heated O2 sensor, MSD GM Blaster Coil, Holley Blue Fuel Pump with Moroso Upgraded Spring, LT1 cam, BBK Underdrive Pulleys, Energy Suspension Tranny Mount, B&M Downshift Kit, B&M Transpak, B&M Drain Plug Kit, B&M Trick Shift fluid, Moroso 20lb radiator cap, Milodon 160* thermostat, Edelbrock Victor Water Pump,
Earl's Hyperfirm Stainless Brake lines,
Summit 1900 Stall Converter,
B&M Flexplate, AC Rapid Fire plugs,
Flowmaster Cat-Back Exhaust, Jet Fan Switch, 40-Below Water Weter,
Ultimate TBI mods, Tuning by TBIChips.com, Spoon Performance sway bar set, Removed EGR,
Removed Cat. Conv., Removed Smog Pump
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.
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???
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
will the stock LO3 springs be ok for the LT1cam ???
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?
As far as I know, no, the only way to delete the optispark from an LT1 is to buy a complete stand-alone optispark delete ignition system, like this:
Originally posted by Farfire70 Shifty, did you ever get that tech article typed up on the LT1 swap?
Yes I did. Check out the common TBI mods sticky at the top. There is a link to it there.
Quote:
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?
There are now a couple of options to deleting the opti. The opti direct sells for about 500 or 600 and compleely cures any ignition related problems associated with the opti.
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?
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.
Originally posted by MrDude_1 since it was a b!tch to find because everyone just linked to this thread:
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?
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
Not sure what exaclty you are asking but the LT1 cams in the f-bods did change over their tenure. I am assuming you looked at that web page with the green backround? The vette (y-body) cams were identical to the f-body cams.
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
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?
I really suggest you do read, all the "stiky" treads on top of the TBI + TPI board and the tgo "thech articles". Before posting and making statements like you did.
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.
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?
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.
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?
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.
, didn't mean to quote you, but, is there any other differences between the different year cams other than lift specs? How much lift can a 1989 305 TBI take? 
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