4.1 liter in 84 regal

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MrSony

Geezer
Nov 15, 2014
6,867
6,837
113
Des Moines, Iowa

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Oct 14, 2008
8,847
7,820
113
Melville,Saskatchewan
It has the improved 205 ft/lbs of the Olds 260 over the 3.8 with 20 extra HP, best of both worlds for an economy engine. I would add 2" duals and 3.42 gears minimum. Both did wonders to the Oldz 260 in my 88 CSC. I get very good in town mileage. I am putting a stock junkyard 2004R back in for highway mileage, should see 25 mpg easy. What trans is in the car?
 

bobby frillou

Not-quite-so-new-guy
Sep 4, 2017
15
0
1
It has the improved 205 ft/lbs of the Olds 260 over the 3.8 with 20 extra HP, best of both worlds for an economy engine. I would add 2" duals and 3.42 gears minimum. Both did wonders to the Oldz 260 in my 88 CSC. I get very good in town mileage. I am putting a stock junkyard 2004R back in for highway mileage, should see 25 mpg easy. What trans is in the car?
Turbo 350
 

88ss408

Master Mechanic
Feb 25, 2007
281
34
28
baie st anne n.b
Nice. I did not know that the real got the 4.1 I thought that only the leaders and bigger cars got them.
with a little bit of work it should get along well.
 

pagrunt

Geezer
Sep 14, 2014
9,340
15,897
113
Elderton, Pa
Nice. I did not know that the real got the 4.1 I thought that only the leaders and bigger cars got them.
with a little bit of work it should get along well.
My brothers lightly optioned '82 G.P. he had in the '90's had the 4.1 (until he killed it by adding too much oil checking it on a steep hill-he is far from a car guy.)
 

bobby frillou

Not-quite-so-new-guy
Sep 4, 2017
15
0
1
Anyone know where I can find a under hood wiring schematic for my 84. A lot of lose wiring not going to anything. Trying to get it right. Also any other wiring diagrams would be useful for futher reference. Thanks in advance
 

liquidh8

Comic Book Super Hero
I'll be building up a 4.1 in the future to replace my 3.8.
 

Slowpoke

G-Body Guru
Dec 23, 2016
610
1,261
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Here is the vacume diagram incase anyone needs it.
 

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