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Username Post: LS3 in a 61 impala        (Topic#358688)
probelair 
Poster
Posts: 11

Reg: 11-01-19
11-02-19 04:47 PM - Post#2779401    

Just bought a really nice 61 has a 283. Probably next winter going to want to change that out for a LS3. How does the x frame handle the upgrade in horse power?

Thanks



 


56_Kruiser 
Valued Contributor
Posts: 2860
56_Kruiser
Loc: St. Augustine, Fl
Reg: 09-23-05
11-03-19 05:45 PM - Post#2779485    
    In response to probelair

I have an LS3 in mine. Link to my build thread below.

I suppose the answer to the question depends done in how you drive it. You going to our slicks on it, Dave down the quarter mile every weekend?

I'm sorry, I don't have an answer for you. I get on it once in a while, but not really all that hard. Been ok for me.

One thing you should know, some folks say you need to notch out the front cross member in order to get the engine low enough in front to achieve correct drive line angles. Some don't.



1956 Chevy
Vid of 61
61 Chevy


 
probelair 
Poster
Posts: 11

Reg: 11-01-19
11-03-19 06:02 PM - Post#2779487    
    In response to 56_Kruiser

Thanks Kruiser,

No i don't plan on hammering it every day but don't want to have on of those you should have asked moments.



 
DZAUTO 
Senior Member
Posts: 8735

Loc: Mustang, OK, USA
Reg: 12-25-99
11-03-19 07:19 PM - Post#2779494    
    In response to probelair

  • probelair Said:
Thanks Kruiser,

No i don't plan on hammering it every day but don't want to have on of those you should have asked moments.



Mmmmmmmmmmmmm, have you forgotten that these cars were once built with a 425hp/409? Or even the RPO Z11 pkg, and they handled the torque/power quite satisfactory?

Just one, of MANY, examples of a 409 abusing an X-frame chassis.
https://www.youtube.com/watch?v=EKazcUGtl8Q



 
rrausch 
"15th Year" Silver Supporting Member
Posts: 14106
rrausch
Loc: L.A, Cal. & St. Louis...
Reg: 04-07-03
11-03-19 09:35 PM - Post#2779501    
    In response to DZAUTO

Man alive the driver of that '62 can flat-out SHIFT that thing.

1953 210 Convertible, 261 with dual Carter YF 966S carbs, P.S., Remote Bendix P.B. Booster... shade-tree restoration about done.




 
pvs409 
"7th Year" Gold Supporting Member
Posts: 2612
pvs409
Loc: Sergeant Bluff, Iowa
Reg: 01-10-05
11-03-19 10:58 PM - Post#2779502    
    In response to DZAUTO

That 62 bubble top that DZAUTO posted has a stock rear end and a stock posi unit(with girdles and better axles). It is also running in NHRA legal D/S in that race with a original rebuilt 409 2-4 barrel motor.

A stroked 409 motor and 4 or 5 speed is to me far better than a LS3 that requires expensive computers to run it and all the other installation and operational issues.

The 409 or even a small block stroker motor is a bolt in.
or even a big block Chevy motor.
My 409 stroker motor in my 62 SS 409 Hardtop has 500 HP.

Paul



57 BelairHT 283/270hp 4 spd
62 ImpHT 327/300 4 spd
62 Imp CV SS 327/300HP 700R4 (sold)
62 Imp HT SS 409/482 stroker 4 spd
62 Imp SS 409 - 5 spd Convertible
http://paulstensland.com


 
Andy4639 
Frequent Contributor
Posts: 1384

Age: 59
Loc: Liberty, SC
Reg: 08-06-16
11-04-19 06:47 AM - Post#2779519    
    In response to pvs409

If your going for drivability go with the LS & 4L80E combo and have it tuned after installing it. You want regret it.
The quick and cold start's are great. No problems with finding gas on trips it's worth it and if you want to race it go for it.

I have the 6.0 & 4L80E in my 71 C 10 and love it. The thing has 425HP & 390 ft lbs of torque at the back wheels and is stock with only headers installed but it was tuned for the cheap unleaded gas. I don't have to worry about where my next tank of gas is coming from when on the road.


1956 Bel Air - LT-1/4l60
1964 SS Impala -350 crate/powerglide
1967 Ramp truck - 350/ 4 speed
1971 C 10 - 6.0 LS / 4l80e 4:10 gears 30 years owner
94 Elderado
2000 S-10
2008 LTZ Tahoe
2011 Treverse


Edited by Andy4639 on 11-04-19 06:51 AM. Reason for edit: No reason given.

 
DZAUTO 
Senior Member
Posts: 8735

Loc: Mustang, OK, USA
Reg: 12-25-99
11-04-19 07:11 AM - Post#2779522    
    In response to pvs409

  • pvs409 Said:
That 62 bubble top that DZAUTO posted has a stock rear end and a stock posi unit(with girdles and better axles). It is also running in NHRA legal D/S in that race with a original rebuilt 409 2-4 barrel motor.

A stroked 409 motor and 4 or 5 speed is to me far better than a LS3 that requires expensive computers to run it and all the other installation and operational issues.

The 409 or even a small block stroker motor is a bolt in.
or even a big block Chevy motor.
My 409 stroker motor in my 62 SS 409 Hardtop has 500 HP.

Paul





Contrary to the opinion of many people about getting away from earlier generation engines that do not have all the plumbing and wiring required for computer control-----------------I gotta go with Paul's machinery.
Even though I don't presently have an X-frame car, I identify with them 100%.

Open the hood of a 62-4 409 car with 2x4 carbs (or even a 59 Tri-carb car) and it is a thing of beauty. Open the hood of a car with all that spaghetti and plastic engine cover---------------and I can't get it closed fast enough!!!!!!!!!

As Paul mentioned above, a very healthy SB400 can be built to produce LOTS of torque/power, but they just ain't got the brutal grunt of a big W-motor. I don't say that because of what I've read or heard from others. I have personal experience. I have a 70 Chevelle (that's what is running with the 62 in the video) with a very strong SB400. That 62 would probably embarrass my 70 just about as bad.



 
64ss409 
Senior Member
Posts: 920

Loc: Montana
Reg: 12-04-02
11-04-19 11:36 AM - Post#2779530    
    In response to DZAUTO

Here is a video of my 340hp. I have been pounding this one since new. Ya, I lost this race, broke out.
Ron
340/409 1/8 mile

1964 SS 409/340 4 spd, bought new Oct '63 from Ken Boggs Chevrolet, Geraldine, Montana


 
DonSSDD 
Silver Supporting Member
Posts: 7196
DonSSDD
Loc: Nova Scotia, Canada
Reg: 08-21-01
11-04-19 12:52 PM - Post#2779533    
    In response to 64ss409

My 409 runs. 91 octane.

63 Pontiac Parisienne Sport Coupe(CDN Chev mechanically (409, 4 speed),62 Bel Air SC (sold), 59 El Camino (sold), 62 Bel Air SC(sold), 63 SWC Vette (sold),
Member #2194


 
beagrizzly 
"11th Year" Gold Supporting Member
Posts: 2095
beagrizzly
Age: 69
Loc: south texas
Reg: 08-04-12
11-04-19 01:13 PM - Post#2779539    
    In response to probelair

probelaire,
Here is some abuse for you. I don't think an LS3 will put out this much juice.

Griff

https://www.youtube.com/watch?v=NZ3vudppScQ

https://www.youtube.com/watch?v=NZ3vudppScQ

if you're gonna be a bear..................

1960 Biscayne (the 6T)
2005 Yukon XL
2007 GMC Sierra Classic 8.1
2009 Silverado
2011 Escalade ESV


 
Nitroholic 
"15th Year" Gold Supporting Member
Posts: 309
Nitroholic
Loc: Out West In SoCal
Reg: 05-08-03
11-04-19 01:31 PM - Post#2779540    
    In response to probelair

Unless you have a numbers matching unmolested survivor, don't let anyone scare you away from the LSx upgrade. You'll have very good reliability, drivability, more than ample performance for the street and you won't have to stop at every 3rd gas station.

The conversion is not rocket science and is even easier now that the after-market has caught up. Just make sure that you get the ECU and the DBW throttle pedal from the donor vehicle.

We did two about 10 years ago. A '62 Impala wagon with an LS1 and a '66 C-10 with the 5.3 truck motor. Both perform very well and for a bonus they get 20+ mpg on the highway with the A/C running.

'66 C-10 Short Fleetside Big Window



 
56_Kruiser 
Valued Contributor
Posts: 2860
56_Kruiser
Loc: St. Augustine, Fl
Reg: 09-23-05
11-04-19 02:12 PM - Post#2779543    
    In response to Nitroholic

It all depends on your interests and desires, between the LS and earlier engines.

In my '56, I ran a 350 with a B&M street blower for 20 years. Got tired of stopping at every gqas station.

Now has an LS1, and the heavy convertible will get22-24MPG on the highway, and starts right up. Love it.

As far as how it looks, it depends on the effort and cash you are willing to invest. I admit I am biased, but I think this one camem out fine:

Direct Link: https://photos.app.goo.gl/9yisXpGNuiaZ48HD6

1956 Chevy
Vid of 61
61 Chevy


Edited by 56_Kruiser on 11-04-19 02:19 PM. Reason for edit: No reason given.

 
Swifster 
Poster
Posts: 79

Loc: Bradenton, FL
Reg: 05-26-18
11-04-19 04:16 PM - Post#2779547    
    In response to DZAUTO

Don't let a little technology keep you from having fun. Just dress the engines up.



Tom

1963 Chevrolet ?
$121.00


 
probelair 
Poster
Posts: 11

Reg: 11-01-19
11-04-19 06:37 PM - Post#2779553    
    In response to Swifster

Thanks guys



 
beagrizzly 
"11th Year" Gold Supporting Member
Posts: 2095
beagrizzly
Age: 69
Loc: south texas
Reg: 08-04-12
11-05-19 11:43 AM - Post#2779602    
    In response to 56_Kruiser

Roger,
It looks just as good under the hood as it does on the beach!!

Griff.

I am actually thinking about using a set of 348 valve covers for my coil covers.

if you're gonna be a bear..................

1960 Biscayne (the 6T)
2005 Yukon XL
2007 GMC Sierra Classic 8.1
2009 Silverado
2011 Escalade ESV


 
56_Kruiser 
Valued Contributor
Posts: 2860
56_Kruiser
Loc: St. Augustine, Fl
Reg: 09-23-05
11-05-19 06:57 PM - Post#2779635    
    In response to beagrizzly

Thanks Griff.

348 valve covers. Neat idea. Not sure I've seen that. Be sure to post pics if you do.

1956 Chevy
Vid of 61
61 Chevy


 
ragtp66 
Contributor
Posts: 812
ragtp66
Reg: 12-09-07
11-07-19 05:58 PM - Post#2779749    
    In response to DZAUTO

Couple more pieces of eye candy
https://youtu.be/OfrNI9qSCK0

https://youtu.be/hLALBsuk2hU

https://youtu.be/hLALBsuk2hU

Toys:
1958 Impala 2dr Hardtop Under Construction
1966 Chevelle Malibu Convert M20/350 Aztec Bronze
1987 Sea Ray Pachanga 22
2002 Cadillac Escalade EXT Parts chaser
2007 Trailblazer SS -gone and missed


 


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