I found a great deal on a 1985 se. with a stock s/c 3800. that runs as a weekend driver.

no problems are reported by the owner.

it has the 4-spd manual that came with the v6 fieros

I was wondering what time that it would run at the dragstrip (rear tires are 215 60r 15)

EDIT: im thinking somewhere in the area around low 14's assuming max hp at the flywheel is 230hp

[This message has been edited by AL87 (edited 08-27-2013).]

It'll run 9 sec flat if you rev it to 7500 on each shift

quote Originally posted by nitroheadz28: It'll run 9 sec flat if you rev it to 7500 on each shift

much like the "200hp" duke I had that I spun a connecting rod bearing on?
LOL^

But seriously, low 14's?

Closer to mid 13s

quote Originally posted by nitroheadz28: Closer to mid 13s

well... thats nice ^_^

I may be able to break 13 if I do a little work and bolt on a few things.

quote Originally posted by nitroheadz28: Closer to mid 13s

13.5-13.8 depending on driver...

Probably a few runs at 13.x then the transmission will explode..... I unfortunately am using the 4 speed too with my 3800 for the time being.

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86 Fiero GT 4spd - L67 swap: VS cam, GenV. Needs exhaust (ETA 9/13) Build Progress
98 GTP - Some mods

quote Originally posted by sco77: Probably a few runs at 13.x then the transmission will explode..... I unfortunately am using the 4 speed too with my 3800 for the time being.

i thought with all the reading from threads here, that the 4spd is where its at in concern with durability and gearing for the s/c 3800

That depends alot on how well you can shift.
Shock loading the trans will kill it.

My sons 85 GT
1. with a stock ser1 3800sc/4t60 / 3.33 gears / smaller pully / through the stock GT muffler ran 14 flat.
2. with the ser ll 3800Sc / 4T65 / 3.29 gears / zzp ported lim and blower case and TB / SS headers / ZZP mild cam , he ran, on a hot after noon, 13.45 @ 98 mph ( it didn't up shift out of 2nd) Than on a 2nd run he backed off to call up 3rd gear and it went 13.46 @ 101.

4speeds are fast in the 1/4. Even a stock pulley car should run a 12 if you give it some lunch at the line.

quote Originally posted by darkhorizon: 4speeds are fast in the 1/4. Even a stock pulley car should run a 12 if you give it some lunch at the line.

now sir... I was being modest, surely you arent seriously telling me the 4spd that comes from a stock v6 fiero
can hit the 12 second bracket... NOW I AM IN LUST...

If I can obtain ownership of this fiero, it will be all I'll ever need. <3

I'll be able to lay down the SPANK on most challengers without hesitation.

My thought though on this, is that the shifting is cable controlled. doesnt that mean shifting will be slow, and clunky compared to something that is direct... like say... a tko500? my friend in his "stock" 91 mustang would shift so fast, the front suspension wouldnt have enough time to drop in between the gears... and he ran a low 13 at the track...

I know if I were to shift the trans, without sparing it any grief, I would get the time you speak. but at the same time...
I dont want to be ripping through transmissions...

My best run with the 4 speed manual was a 12.6. Was in 2002 so I don't remember mph and what not. 3.0" pulley, 1.9:1 rockers, self ported blower, throttle body and exhaust manifolds, 160 thermostat. Everything else stock.Stock PCM from bonneville, no programmers were available back then. Run was on 245/60r14 cooper cobras, 1.7 60'. 1200 rpm launch. 91 octane. Next trip to the track I scattered the differential all over the track, still have the two stripped spider gears. The other two were launched through the case and were picked up in pieces.

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10.263 @ 134.44MPH - 1.49 60'
Billet 6262 Precision turbo, PT1001 intercooler, ST1 cam, 130lb springs, comp pushrods, HV3, ARP Rod bolts, otherwise stock L36.


Old M90 XP Cam time -
11.425 @115.60
1.543 60'

If I can hit 14.4 @ 94 in a 3800 NA and a 4 speed at 2600 ft. in 90 degree weather, you should be at or under 12.7ish.

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Build thread for my 88 + 3800NA swap

I went 12.6@108 with just a 3.4 pulley good intake and exhaust on the 4speed with all season tires. I broke 3 of the 4 speeds. Two were stripped gears in 3rd. Be careful.

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Turbo 3800 E85 F23 5spd spec5
11.17@132.6

quote Originally posted by Justinbart: I went 12.6@108 with just a 3.4 pulley good intake and exhaust on the 4speed with all season tires. I broke 3 of the 4 speeds. Two were stripped gears in 3rd. Be careful.

is it the slamming into the gear, or is it the dumping of the clutch pedal that does the stripping?

question: is the getrag without a doubt better? I'd rather have the gearing of the 4spd and not slam into gear and dump the clutch all the time, over the getrag's 5spd (if the getrag is stronger)

This thread is pointless, cause if you try to post a good time in the quarter (which is possible as stated before) you're going to be leaving your trans in pieces on the way down in short order. Doesn't matter if its the Muncie or Getrag, both will blow with the 3800 with clutch dumps and speed shifting soon enough.

quote Originally posted by nitroheadz28: This thread is pointless, cause if you try to post a good time in the quarter (which is possible as stated before) you're going to be leaving your trans in pieces on the way down in short order. Doesn't matter if its the Muncie or Getrag, both will blow with the 3800 with clutch dumps and speed shifting soon enough.

Which is why you should use the 4t65hd - you can beat it senseless and it keeps coming back for more.

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84 NB, 3800SC, E-85, VS Cam, 3.0 Pulley, 4T65E-HD, HP Tuners, AEM Wideband, Regal GS Gauges, S-10 Brake Booster. 1/4 mile -12.05 at 111.7mph

quote Originally posted by nitroheadz28: Doesn't matter if its the Muncie or Getrag, both will blow with the 3800 with clutch dumps and speed shifting soon enough.

THAT IS WHAT I WANTED TO READ^^^^^^^^^^

I dont plan on beating it senseless if I get it, I know how to drive these old transmissions to preserve them for longevity.
just ease into each gear and let the clutch out easily. AND THEN STOMP THE ACCELERATOR once its in gear.

I just want to be able to drop it down a gear for someone who thinks a girly stock looking 85 notchback is nothing but a 4banger,
and run them until they feel hard pressed or impossible to catch me.

You can do that with the 4spd no problem. I run 13.4-13.5 @104 105 mph in the qtr mile...

With any abuse any transmission will break. Guy I bought my old GTP from blew trans on light mods.

Its the age and abuse factor... you pay to play...

I want to run a turbo I know transmission will be next factor hate to lose the manual but I'll go which ever is recommended which tends to be auto.

But you aren't asking for 12's 11's or lower

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3800 SC/IC Formula whines more than your girl...
08 Cobalt SS TC - ZZP tuned, K&N SRI, 6k HID's 13.31@107
07 HHR - Wifes (tried to have her get the SS)