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Author Topic: Turbo-charging the 258 cu. in. engine  (Read 9205 times)

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Offline Elden Stenberg

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Turbo-charging the 258 cu. in. engine
« on: December 18, 2014, 04:00:48 PM »
Has anyone done or seen the 258 cu. in. engine turbo-charged? Have 2 headers for this engine and flipping 180 degs. and could fab. a mounting flange for the turbo. could put the inter-cooler in the front next to the radiator.
Using a 350 Holley carb and a HEI.
Stout motor anyway with only 12,000 miles on it!
Thanks for any help on this!
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Offline carnuck

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Re: Turbo-charging the 258 cu. in. engine
« Reply #1 on: December 18, 2014, 06:09:55 PM »
Same as doing a 4.0L
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Offline amchornet

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Re: Turbo-charging the 258 cu. in. engine
« Reply #2 on: December 18, 2014, 08:59:37 PM »
They sell a blower kit for the 4.0. That would be cool too.
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Joe Washburn
1976 hornet sedan 258 4.0 head mpfi
1985 eagle sedan 4.0 mpfi
1998 jeep grand

Offline matt1971

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Re: Turbo-charging the 258 cu. in. engine
« Reply #3 on: December 18, 2014, 09:26:18 PM »
Hi. Matt here. Check this out. Go to Gremlinx.com then click on feature stories then scroll down and click on 1971 Turbo Gremlin.
I own a 1979 AMC Pacer Limited Hatchback with a code C 258 2 bbl I-6 Motor and a torque command automatic transmission on the column. Alpaca Brown with a Tan Interior.
« Last Edit: December 18, 2014, 09:37:29 PM by matt1971 »
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Offline eaglefreek

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Re: Turbo-charging the 258 cu. in. engine
« Reply #4 on: December 18, 2014, 10:26:16 PM »
http://gremlinx.com/1971-turbo-gremlin/

A member here turbo charged his years ago, before the forum was started, but I don't think he posted much info on it. He wound up installing a V8.
The PPG AMC AMX was turbo charged. I remember seeing it at the Cleveland Grand Prix back in the 80's but it was fuel injected.


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1986 AMC Eagle Wagon 4.2L/4.0L head, AW4,NP242, Chrysler 8.25" rear.
1981 AMC Eagle Wagon As Seen On TV  Lost In Transmission


 

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Offline rollguy

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Re: Turbo-charging the 258 cu. in. engine
« Reply #5 on: December 19, 2014, 01:11:17 AM »
Quote from: eaglefreek on December 18, 2014, 10:26:16 PM
http://gremlinx.com/1971-turbo-gremlin/

A member here turbo charged his years ago, before the forum was started, but I don't think he posted much info on it. He wound up installing a V8.
The PPG AMC AMX was turbo charged. I remember seeing it at the Cleveland Grand Prix back in the 80's but it was fuel injected.


Believe it or not, it looks like it has a Mercedes Benz fuel injection system (fuel distributor and throttle body).
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1980 Eagle Turbodiesel Wagon (only 2 known to exist as of 2008)- 7-7-2011 Flight to it's new nest @ Rambler Ranch
1983 Eagle Wagon  Tan over Copper
1982 Eagle SX4 "ALTREGL"  (avatar photo)
1982 Eagle 4 Door Sedan  Copper over Satin Black
1985 Eagle Sport Wagon October 2007 ROTM (SOLD)
4 Biofuel powered Benzs ('98 E300, '82 300 CD, '82 300 TD (wagon), '80 240 D)
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Offline captspillane

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Re: Turbo-charging the 258 cu. in. engine
« Reply #6 on: December 19, 2014, 06:24:09 PM »
I have a meet each June. This past June 2014 a young guy showed up in his Eagle wagon with a new turbo unit that he had just installed. It was done well and fairly complicated. He had the advantage of his father owning a speed shop that often installed custom turbo units and custom exhausts.

Phil was there and he got quite a few pictures. Maybe he'll notice this post and put them here. My pictures are buried.
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Currently Inspected and Insured as of Jan 2013:
-1985 Eagle Station Wagon 258 T5 Stickshift
-1980 Eagle Station Wagon 258 Auto Fuel-injected with GM TBI

Minor Repairs Underway:
-1982 Eagle SX4 258 T5
-1981 Kammback 2.5L Iron Duke T5

Restoration Efforts Near Completion:
-1982 SX4- 401 NV3550
-1983 SX4- 4.5 MPI NSG370 (6 Speed)

Restoration Efforts Underway:
-1985 SW- 4.0 MPI AX15
-1982 SX4- 4.0 AW4
-1981 SX4- SD33T NV4500 (Turbodiesel 5 speed)

Future Rescue Efforts- '85 Maroon SW, '87 Limited SW, '84 Limited SW, '87 4 door Sedan, '81 2 door Sedan, '88 White SW, '77 4 door Hornet, '74 2 door Hornet, '79 Spirit AMX, '81 Kammback.

RIP- Red '81 SX4, '84 4dr Sedan, '84 SW, '81 SW, '80 Spirit, '83 SW, '83 4dr Sedan

Offline matt1971

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Re: Turbo-charging the 258 cu. in. engine
« Reply #7 on: December 19, 2014, 08:17:11 PM »
Hi. Matt here. I would love to see photos of that set up.
I just looked out the window. My 79 AMC Pacer is hibernating until spring. I fire up the 258 every couple of weeks.
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