68 camaro stock no get up and go - Team Camaro Tech
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post #1 of 25 (permalink) Old Aug 31st, 08, 06:08 PM Thread Starter
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68 camaro stock no get up and go

good afternoon, i have a 68 camaro orginal everything 327 2 barrel carb w/power glide transmission, i have had the engine rebuilt as well as the transmission, my problem is the car lacks passing power, in otherwards once in a while when you press the gas pedal to the floor it will kick in but mainly she takes her time getting up to speed and doesnt have any kick.

I think this is a carb problem, as if the vacumm advance isnt kicking in or something i suppose, what do you think? im not trying to race or anything at all, after all its only a 2bb carb but still there should be some kind of passing power,

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post #2 of 25 (permalink) Old Aug 31st, 08, 08:07 PM
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Re: 68 camaro stock no get up and go

What's it have for gears? The 327 2bbl and powerglide came with something like 2.76 gears. It wasn't a quick car when it was new.
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post #3 of 25 (permalink) Old Aug 31st, 08, 08:36 PM
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Re: 68 camaro stock no get up and go

Quote:
Originally Posted by knightmoose View Post
good afternoon, i have a 68 camaro orginal everything 327 2 barrel carb w/power glide transmission, i have had the engine rebuilt as well as the transmission, my problem is the car lacks passing power, in otherwards once in a while when you press the gas pedal to the floor it will kick in but mainly she takes her time getting up to speed and doesnt have any kick.

I think this is a carb problem, as if the vacumm advance isnt kicking in or something i suppose, what do you think? im not trying to race or anything at all, after all its only a 2bb carb but still there should be some kind of passing power,
Sounds like it is doing what it was intended to do.Move the 68 down the road..thats about it.Vac advance does not kick in at wot.it lays back and allows the mechanical advance curve to take over total ign timing.I have made some mods to my 68 camaro to enhance performance over stock oem application.Your 327 would like a 700r4 auto trans.The deep 1st gear ratio of 3.06/1 would crutch your low torque and give you more range options and deliver more mpg at e-way speed with a lockup converter feature.All this..and still retain the 2 bbl carb.

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post #4 of 25 (permalink) Old Aug 31st, 08, 09:06 PM
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Re: 68 camaro stock no get up and go

I had same situation with 2bb 327, Powerglide transmission, and 2.73 gears. I decided for some easy, affordable upgrades. Here are some of them:

Swapped the Powerglide (1.76 first gear) for a TH350 (2.52 first gear).

Swapped the stock 210 hp heads (1.72 intake valves) for World S/R heads (1.94 intake valves) (similar to 275 hp 327 Camaro option).

Swapped the original intake/exhaust for 4bb carb, Edelbrock Performer intake, headers, and x-pipe with Dynomax turbo mufflers.

Cam change, gear change, Eaton Posi are other options you might consider. If you keep the 2.73 axle gears, a 700r4 transmission would improve take off, but its overdrive gear might give you pretty low rpms on the highway with a 327 (I welcome any other thoughts on this....)

1968 327 sport coupe. Son of original owner.

Last edited by mike p; Aug 31st, 08 at 09:10 PM. Reason: Clarity
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post #5 of 25 (permalink) Old Aug 31st, 08, 09:35 PM Thread Starter
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Re: 68 camaro stock no get up and go

i understand what you are all saying, i have done many modifications to my 67 camaro but this 68 that i own is all original with protecto plate, im not saying that the car should be fast what i am saying is even with the pedal to the floor it doesnt kcik in at all, every car has some sort of kick when stomping on the pedal, im not saying the car will go fast or anything but it should be able to push it into gear thus i feel i have a carb problem because once in a while it does work

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post #6 of 25 (permalink) Old Aug 31st, 08, 09:51 PM
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Re: 68 camaro stock no get up and go

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Originally Posted by knightmoose View Post
ii am saying is even with the pedal to the floor it doesnt kcik in at all, every car has some sort of kick when stomping on the pedal,
Are you telling us that sometimes when you're cruising along and stomp the gas, the car downshifts to first "passing" gear and sometimes it doesn't?

That would be a problem of sorts then.

There is a linkage attached to the carb, it runs back under the throttle rod, to a bellcrank that crosses the back of the engine and then another rod down to a lever on the transmission. The whole mess should move when you press the gas, to tell the trans how much power you are asking for.

It should kick down to first when you floor it. Certainly at 40, maybe at 50 also. Not much faster than that, it'll run out of rpms.

That linkage should be checked to make sure it's working properly, and adjusted properly.





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post #7 of 25 (permalink) Old Aug 31st, 08, 09:54 PM
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Re: 68 camaro stock no get up and go

Quote:
Originally Posted by knightmoose View Post
good afternoon, i have a 68 camaro orginal everything 327 2 barrel carb w/power glide transmission, i have had the engine rebuilt as well as the transmission, my problem is the car lacks passing power, in otherwards once in a while when you press the gas pedal to the floor it will kick in but mainly she takes her time getting up to speed and doesnt have any kick.

I think this is a carb problem, as if the vacumm advance isnt kicking in or something i suppose, what do you think? im not trying to race or anything at all, after all its only a 2bb carb but still there should be some kind of passing power,
Do a tune up (plugs cap rotor wires filter) and advance the timing.
Even a 327/210hp powerglide with 2.73 rear gears should have a little V8 punch to it.
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post #8 of 25 (permalink) Old Sep 1st, 08, 08:04 AM
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Re: 68 camaro stock no get up and go

Sounds like it's not downshifting into "passing gear" as we used to call it back in the good ole days. At say 40 MPH and you manually shift down into low, does it seem to have some get-up-and-go then? If so, then do what Jim says.

Quote:
Originally Posted by JimM View Post
There is a linkage attached to the carb, it runs back under the throttle rod, to a bellcrank that crosses the back of the engine and then another rod down to a lever on the transmission. The whole mess should move when you press the gas, to tell the trans how much power you are asking for.

It should kick down to first when you floor it. Certainly at 40, maybe at 50 also. Not much faster than that, it'll run out of rpms.

That linkage should be checked to make sure it's working properly, and adjusted properly.

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2004 Pontiac GTO - lots of mods
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post #9 of 25 (permalink) Old Sep 1st, 08, 08:59 PM Thread Starter
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Re: 68 camaro stock no get up and go

yes its as jim says i think there is a linkage problem, the car runs great engine totally rebuilt electric ignition eben the original transmission was rebuilt, what i am saying is just that its not down shifting or what ever it wont push at all i will have to check the linkage out, i notice the spring etc, this has to be something simple, thats why i think its a carb problem once in a while it does kick in when stomping on the pedal other wise you have to wait for some time to catch up to speed,

the tarnsmission is a power glide everything automatic what are you guys saying by wait until she gets to 40mph then manually do it? at 40 i have no problem speeding up its getting up to 40 that is the slow part lol, are you guys saying get her to 40mph then down shift manually like to d2 or something?

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post #10 of 25 (permalink) Old Sep 2nd, 08, 04:39 AM
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Re: 68 camaro stock no get up and go

Yes, cruising at 40 mph and going to WOT should force a downshift just as if you manually shifted to first and go to WOT. The results should be the same.

If the trans is not downshifting, then an adjustment should be checked and made, if needed.
Remove the air cleaner.
Have an assistant hold the throttle to the floor.
Observe throttle plates to make sure they are open fully. if not, shorten the linkage rod at the carb attachment.
If throttle is adjusted, make sure it returns to idle/closes.
Hold throttle open.
Bottom linkage rod on carb is for PG kickdown. Can the rod be pulled forward?
If rod can be pulled, needs adjustment. Release throttle, pull off k/down linkage, open throttle to WOT.
Pull k/down rod forward; you will feel resistance on the last 1/2 inch of travel. This is the 'kickdown' portion.
The front oval of the k/down rod should match the front of carb stud, as in slip over it. If not, adjust the length of the k/down rod to match.
Close throttle, attach k/down rod, attach spring, go to WOT, and does throttle return? Make sure it returns.
Reinstall air cleaner.

Test drive. Stop sign to WOT, trans should upshift at about 5000 rpm/60 mph, depending upon rear gear ratio. Cruise at 30-45 mph, WOT, should downshift.

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post #11 of 25 (permalink) Old Sep 2nd, 08, 06:25 PM
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Re: 68 camaro stock no get up and go

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Originally Posted by mike p View Post
If you keep the 2.73 axle gears, a 700r4 transmission would improve take off, but its overdrive gear might give you pretty low rpms on the highway with a 327 (I welcome any other thoughts on this....)
By all means..a low torque 327 might struggle at low e-way speed in od..locked up.This could be corrected by manually selecting D3 for those driving conditions.I am thinking more like 70 mph on the flat interstate..the v8 327 with mild cam timing should be happy with the low rpm,s.Now 50 mph cruise and inclines or a heavy head wind may require the manual selection.I think the more ranges available..allows you to find the sweet spot the engine wants to operate in under varying conditions and road speeds.

George
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post #12 of 25 (permalink) Old Sep 2nd, 08, 10:49 PM
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Re: 68 camaro stock no get up and go

Dont just wind up the advance on the timing..u can end up doing damage bu over advancing the total
A couple slightly lighter springs on the counterweights makes a suprisingly more peppy and responsive stock engine

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post #13 of 25 (permalink) Old Sep 3rd, 08, 06:05 AM
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Re: 68 camaro stock no get up and go

at 40 i have no problem speeding up its getting up to 40 that is the slow part lol, are you guys saying get her to 40mph then down shift manually like to d2 or something?[/QUOTE]

I think thats the key we need to help him.
If you are having a problem getting to 40 mph its not the trans or linkage it may be thats all the power its got or some light tweeking to tune related things may be needed. Check your advance and base timming. If you have points still, adjust those to spec first. If you have little power after that and no other symptoms you may have a carb problem. Start with just the basic tune stuff first. A little rich or lean can cost you alot of power!
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post #14 of 25 (permalink) Old Sep 4th, 08, 10:40 PM Thread Starter
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Re: 68 camaro stock no get up and go

yes its the getting up to 40mph to begin with that is slow after no biggie crusing at 90-100 lol, i dont have points when the engine was redone i also had it converted to MSD, its not missing or anything, i think i have a carb problem i really do

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post #15 of 25 (permalink) Old Sep 4th, 08, 10:43 PM Thread Starter
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Re: 68 camaro stock no get up and go

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Originally Posted by Everett#2390 View Post
Yes, cruising at 40 mph and going to WOT should force a downshift just as if you manually shifted to first and go to WOT. The results should be the same.

If the trans is not downshifting, then an adjustment should be checked and made, if needed.
Remove the air cleaner.
Have an assistant hold the throttle to the floor.
Observe throttle plates to make sure they are open fully. if not, shorten the linkage rod at the carb attachment.
If throttle is adjusted, make sure it returns to idle/closes.
Hold throttle open.
Bottom linkage rod on carb is for PG kickdown. Can the rod be pulled forward?
If rod can be pulled, needs adjustment. Release throttle, pull off k/down linkage, open throttle to WOT.
Pull k/down rod forward; you will feel resistance on the last 1/2 inch of travel. This is the 'kickdown' portion.
The front oval of the k/down rod should match the front of carb stud, as in slip over it. If not, adjust the length of the k/down rod to match.
Close throttle, attach k/down rod, attach spring, go to WOT, and does throttle return? Make sure it returns.
Reinstall air cleaner.

Test drive. Stop sign to WOT, trans should upshift at about 5000 rpm/60 mph, depending upon rear gear ratio. Cruise at 30-45 mph, WOT, should downshift.
what do you mean by "WOT" ?

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