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#1
12-26-2003, 02:37 PM
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how hard would you have to make the tranny shift to get it to chirp into 3rd? i have an 80 TA with a 455 making about 350-400hp and a lot of torque. i'm also going to be putting in 3.42 gears. would something like a stage 2 shift kit do it?
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______________________________ 1980 Special Edition Trans Am 1975 2 bolt 455, 6X-8 heads, summit 2802 cam, stock intake, edelbrock 600cfm. TH350 trans and converter out of a 78 TA, 10 bolt posi rear with 3.42 gears, 225/70-15 tires. |
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#2
12-26-2003, 02:37 PM
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how hard would you have to make the tranny shift to get it to chirp into 3rd? i have an 80 TA with a 455 making about 350-400hp and a lot of torque. i'm also going to be putting in 3.42 gears. would something like a stage 2 shift kit do it?
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______________________________ 1980 Special Edition Trans Am 1975 2 bolt 455, 6X-8 heads, summit 2802 cam, stock intake, edelbrock 600cfm. TH350 trans and converter out of a 78 TA, 10 bolt posi rear with 3.42 gears, 225/70-15 tires. |
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#3
12-26-2003, 03:15 PM
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Even without a shift kit, the way to get a really hard 2-3 shift is to use all flat (no wavy) steels in the direct clutch and to disable the 2-3 accumulator in the valve body. I did this once and it shifted way too hard for my tastes. Spun the outer ring on the harmonic balancer it shifted so hard. I put a wavy in the direct clutch but left the 2-3 accumulator disabled and now it's just to my liking.
The 2-3 accumulator is in the valve body. You can remove the valve body, pull the 2-3 accumulator piston and stuff out, drill and tap the feed hole to accept a small set screw or something for a plug then reassemble it all. Unfortunately, to remove the wavy steel from the direct clutch the trans needs to be removed and partly disassembled. Almost forgot - I use a 6-friction direct clutch from a '70 Cadillac 472 trans. 455 Pontiac transmissions even had only 5. Some Olds 455's had 6. More frictions makes shifts firmer even with low line pressure from original line pressure springs. That in turn reduces thrust on the crank thrust bearing due to lower line pressure pushing the converter forward. Mike |
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#4
12-26-2003, 05:49 PM
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With my 400 and E-heads I get a 3rd gear chirp. That's gears! I run 3:55's, shift kit, stall, & some other stupid stuff. But it can be done cheaply & fun.
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#5
12-26-2003, 07:25 PM
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Run a manual and you shouldn't have a chirp problem with any gear
 I dont think the little 400 has the balls to chirp my 5th gear though, does every other gear without a hitch... something to work on though 
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'71 Holden HQ Monaro - 3850lbs race weight, 400c/i - 11.4 @ 120 '66 Pontiac GTO - 389, 4 speed street cruiser |
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#6
12-26-2003, 09:39 PM
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Other than the obvious question of why.....
Prepare to see more broken drive line and suspension parts (especially u-joints and ring gears), as well as an increase in tranny maintenance. My low 10 second GTO doesn't chirp third, when driving normally, and it works just fine....You tell 'em I'm comin' and Hell's comin' with me, ya hear? Hell's comin' with me! |
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#7
12-27-2003, 09:09 AM
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Why? I'll tell you why, Bruce.....he wants to impress his buddies.
 I say build it to run low 12's on pump gas and still be docile enough to let your grandmother drive it to church and to hell with your buddies. 
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Just a blind squirrel looking for a nut. |
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#8
12-27-2003, 09:37 AM
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Only person that's going to impress is the guy who sells tires. He'll be able to buy a new Mercedes every year for his wife that way....
You tell 'em I'm comin' and Hell's comin' with me, ya hear? Hell's comin' with me! |
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#9
12-28-2003, 09:42 AM
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Why would you want to chirp 5th gear?Its an overdrive gear..Been watching fast and furious too many times??
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#10
12-28-2003, 02:19 PM
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by weak64:
Why would you want to chirp 5th gear?Its an overdrive gear..Been watching fast and furious too many times?? <HR></BLOCKQUOTE>Uhhhhhhhhhhhh, we're talking th400's here...they only have 3 gears.
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Just a blind squirrel looking for a nut. |
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#11
12-28-2003, 03:19 PM
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Put some donut spares on the rear, with a stock converter. Chirps won't be a problem. A 2-3 shift in a 400 that is that brutal is not a good thing. 1st- you lose et. 2nd the sunshaft and center support will suffer. Any clutch in any transmission should apply as quickly as possible with NO feel. It is not possible because of variables in engine torque troughout the powerband in a daily driver. A smooth snappy shift is what you really want.
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A Government big enough to give you everything you want is strong enough to take everything you have. - Jefferson  "If ever a time should come, when vain and aspiring men shall possess the highest seats in Government, our country will stand in need of its experienced patriots to prevent its ruin." - Samuel Adams Right and wrong doesn't need facts all the time. -Lighthouseman ("lawyer") Starnes Performance Automatics www.Starnesperformance.com |
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#12
12-28-2003, 08:51 PM
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75' Grand Am, stock 200hp 455, th400 with B&M stage 1 shift kit and 3.73:1 gears. Chirp into second and third no problem if I flog it, it might impress somebody, but it sure is hard on parts. Firm shifts are good, brutal shifts are not.
Never trust a fart. They sometimes suprise you. http://community.webshots.com/user/motornoggin
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Never trust a fart. They sometimes suprise you. http://community.webshots.com/user/motornoggin http://motornoggin.smugmug.com/ |
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#13
12-29-2003, 07:57 AM
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Uh refering to krisr, thank you.
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#14
12-29-2003, 05:14 PM
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Hard shifts are bad news for rear ends......I have been through a few and Im sure the "chirps" are the culprit.
If its a daily driver I wouldnt recomend a shift kit that shifts hard enough to chirp the tires. Very hard on drive shaft,u-joints,rear end gears and axles. Colin
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"It is foolish and wrong to mourn the men who died. Rather we should thank God that such men lived."- General George Patton "Perpetual peace is a futile dream."-General George Patton "I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them."-Thomas Jefferson "Any society that would give up a little liberty to gain a little security deserves neither and will loose both."-Benjamin Franklin |
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#15
12-30-2003, 12:49 PM
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You're just looking for a "chirp" into third? If I were you I'd be looking into laying stripes in third
. I've got a '69 GP with a 350hp 400. Only mods are 1 5/8" headers, 2 1/4" exhaust, Performer intake, Holley 750cfm 4160 carb, and a TransGo shift kit; everything else is 100% stock. This combo definitely chirps the tires in 3rd. Here's how I found out: I was bored one day and decided to give the all the high schoolers something to look at. I was stopped at the light in front of the school. Light turned green and I floored it. Smoked the tires shifting into second and they spun about two full rotations shifting into third. (By the way, I ran out of gas about 3 blocks later - 1 block from my house - a near empty tank of gas definitely can help you make a "chirp"). Needless to say, it took several hours for that grin to leave my face. This car will also spin the tires all the way up to 45mph where it will stop accelerating but it'll keep spinning the tires. Man I love that car. |
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#16
12-30-2003, 02:48 PM
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Hey, No. 1 Prince!
Mongo's No. 1 Bull**** Meter just broke after pegging into the red too hard. Next? 
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Just a blind squirrel looking for a nut. |
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#17
12-30-2003, 03:02 PM
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__________________
 SIGPIC]http://forums.performanceyears.com/forums/image.php?type=sigpic&userid=139862&dateline=12616 03096[/SIGPIC]http://www.youtube.com/watch?v=iJrDl3nRNCM http://www.youtube.com/watch?v=Fvywdocl4GA http://ultimategto.com/icongraf/65headtitle.jpg |
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#18
12-30-2003, 03:13 PM
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 frittering and wasting the hours in an off hand way.... 1969 GTO, 455ci, 230/236 Pontiac Dude's "Butcher Special" Comp hyd roller cam with Crower HIPPO solid roller lifters, Q-jet, Edelbrock P4B-QJ, Doug's headers, ported 6X-8 (97cc) heads, TKO600, 3.73 geared Eaton Tru-Trac 8.5", hydroboost, rear disc brakes......and my greatest mechanical feat....a new heater core. 
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#19
12-30-2003, 03:20 PM
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by the_no1prince:
Smoked the tires shifting into second and they spun about two full rotations shifting into third.<HR></BLOCKQUOTE> Saw that while inside the car driving did ya? Fellas....... He's good...  Fist fulla bullets and a chest fulla teflon.... -Biggee Smalls |
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#20
12-30-2003, 04:56 PM
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I had a cheap set of tires like that once
2003 NSCA/NMCA A/M World Champ- 1966 GTO #421
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66 GTO Nostalgia Super Stock/Street Legal Car 421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99 Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
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