Author Topic: 301 upgrade?  (Read 38911 times)

jjr

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  • Fort Worth, Texas
      • http://www.301garage.com
Re: 301 upgrade?
« Reply #40 on: December 26, 2013, 09:53:51 AM »

> Stop trying to make the motor out to be something it isn't...

 The stock 301T listed more torque than the 400 W72 engine did, and
was within spitting distance of the HP numbers.

 That, according to Pontiac, is what it was...
1979 10th Aniv 400/4spd
1980 Black SE 301NA
1980 Indy Turbo Pace 301T
1981 Turbo 301T
1981 Black SE 301T
1981 Daytona Pace 301T
www.301garage.com/forum/

81 Formula

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Re: 301 upgrade?
« Reply #41 on: December 27, 2013, 04:18:00 PM »
Stock vs Stock the two are about the same(turbo 301, vs 400   NA 301 vs 400 not even close).   For me the deciding factor for pulling the NA 301 and going with the 400 was the build options.   It would have cost a fortune to build the 301 to pull what even a mild build to the 400 would do.  I know, my first plan was to keep the 301 and build it....until I actually tried to get the parts list together to do it.  No aftermarket intake, nothing much you can do to the heads and no aftermarket heads etc.

301 is a good motor for what it was built to do,  mine did 118k miles and other than the garbage transmission it was bolted to from the factory I did not do much other than change the oil and plugs.   But it had no chance at being what I wanted the car to be when I started rebuilding it 19 years later.    If money was no object, then I could have bought a second car with a 400 in it,  or spent a fortune to custom build and fabricate parts for the 301 to make it what I wanted.    So far I have not hit the lottery so money is a factor  :)

As far as miles per gallon,  when new my 301 got 15 MPG if I was easy on it.   My fairly stout built 400 gets 11 MPG if I am easy on it with the 4 speed     A fair trade off for the extra power.  And lets be honest,  if you are really worried about gas mileage a second generation firebird is not the car for you!  :)

My end advise?   If it is an SE or a turbo, keep the 301 even if you don't care much for the engine.  If you are like me and your car is a run of the mill low option normal aspirated version, do whatever makes you happy.      Heck on an auction block my car is worth more as a restomod than it ever would be as an original.... Base interior, 301 NA, non tilt steering, non delay wipers, manual windows, no rear defog, no tach, no truck switch etc etc.   About the only options it came with were rally gauges, spoiler, and the "formula" package.
400 4-speed, 3.42 posi, performer rpm, hedman headers, comp cam, 6x heads.
Owned it since 1985, 2nd owner,, bought it with 23,000 miles on it.  Original engine and trans in storage.

Chuckles

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Re: 301 upgrade?
« Reply #42 on: December 27, 2013, 06:25:31 PM »
My end advise?   If it is an SE or a turbo, keep the 301 even if you don't care much for the engine.  If you are like me and your car is a run of the mill low option normal aspirated version, do whatever makes you happy.      Heck on an auction block my car is worth more as a restomod than it ever would be as an original.... Base interior, 301 NA, non tilt steering, non delay wipers, manual windows, no rear defog, no tach, no truck switch etc etc.   About the only options it came with were rally gauges, spoiler, and the "formula" package.

I can strongly agree with that. I have an '81 T/A that came equipped with the 301 N/A 4BBL. I feel it's worth way more with my 455 EFI/Turbo engine I stuffed into it. But, it's what I wanted. I am young and want brute power. =)

81turbo

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Re: 301 upgrade?
« Reply #43 on: January 25, 2014, 02:31:28 PM »
There is a reason the 301 had a short life.  It sucked.

What's your boggle, did you see your girlfriend climbing out of a turbo car one night? I've never had a problem running with 6.6's or Z28's back in the day.  My stock 301 is still running, where's your stock 400?

N PRGRES

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Re: 301 upgrade?
« Reply #44 on: January 27, 2014, 05:22:29 PM »
There is a reason the 301 had a short life.  It sucked.

What's your boggle, did you see your girlfriend climbing out of a turbo car one night? I've never had a problem running with 6.6's or Z28's back in the day.  My stock 301 is still running, where's your stock 400?
no but your wife loves the 400. Guess size does matter.
Dave

81 Trans Am

Re: 301 upgrade?
« Reply #44 on: January 27, 2014, 05:22:29 PM »

N PRGRES

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Re: 301 upgrade?
« Reply #45 on: January 27, 2014, 05:43:48 PM »
There is a reason the 301 had a short life.  It sucked.

What's your boggle, did you see your girlfriend climbing out of a turbo car one night? I've never had a problem running with 6.6's or Z28's back in the day.  My stock 301 is still running, where's your stock 400?
for the record I was referring to the 301 NA not the T. 
Dave

81 Trans Am

jayman2007

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Re: 301 upgrade?
« Reply #46 on: January 27, 2014, 07:48:43 PM »
The 301 is and was a good motor i pulled mine after driveing it for years with the 301. What i did was chnage the cam to the bigest  one i could get also put headers on and did my own porting on the heads and intake to clean them up bored it 10 over  got good power. Then built a 350 that was going to go in my camaro but needed new floors n such so droped it in the firebird instead. Still got the 301 as its numbers matching to the car for when i kill the 350.  gotta run 91 with octane boster  getting a bit expensive

Re: 301 upgrade?
« Reply #46 on: January 27, 2014, 07:48:43 PM »
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