Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

4 Pages V  1 2 3 > »   
 Reply to this topicStart new topic
> 95 ' F I Chevy 4.3 Ltr, How much power can you get from this engine
flmont
post Feb 17 2016, 10:56 PM
Post #1


Senior Member
***

Group: Members
Posts: 879
Joined: 21-October 08
From: Tucson,Az
Member No.: 9,676
Region Association: Southwest Region
I have a 95' 4.3 Ltr FI engine that needs rebuilt,..what kind of power can U get from these engine's with factory ECU,..and spider FI system..?? Thanks
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mueller
post Feb 17 2016, 11:12 PM
Post #2


914 Freak!
***************

Group: Members
Posts: 17,146
Joined: 4-January 03
From: Antioch, CA
Member No.: 87
Region Association: None
I'd think asking that question on a truck forum that the motor came from you'd get more answers. Can the ecu be chipped or reprogrammed ¿

Are you willing to change the pistons rods or heads?

$500 rebuild budget or 3 times that amount¿
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
messix
post Feb 18 2016, 12:46 AM
Post #3


AKA "CLUTCH KILLER"!
*****

Group: Members
Posts: 6,995
Joined: 14-April 05
From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada
Member No.: 3,931
Region Association: Pacific Northwest
it depends on what version you have.

you will need to look here to figure out what engine you have https://en.wikipedia.org/wiki/General_Motor...C2%B0_V6_engine

then with less accessories and less restrictive exhaust you might add 10-15% in hp

also note how low these engines make their power, these are designed for torque to be used in trucks.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jsaum
post Feb 18 2016, 09:47 AM
Post #4


Senior Member
***

Group: Members
Posts: 530
Joined: 12-June 07
From: Everett, WA
Member No.: 7,809
Region Association: None
My boat has the marine 4.3 it makes 205hp.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
matthepcat
post Feb 18 2016, 10:37 AM
Post #5


Meat Popsicle
***

Group: Members
Posts: 1,462
Joined: 13-December 09
From: Saratoga CA
Member No.: 11,125
Region Association: Northern California
Just build it to GMC Syclone/Typhoon specs with a turbo for best power.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
mgp4591
post Feb 18 2016, 10:48 AM
Post #6


914 Guru
*****

Group: Members
Posts: 5,380
Joined: 1-August 12
From: Salt Lake City Ut
Member No.: 14,748
Region Association: Intermountain Region
QUOTE(matthepcat @ Feb 18 2016, 09:37 AM) *

Just build it to GMC Syclone/Typhoon specs with a turbo for best power.

And then a really strong trans to handle the torque and hp - that'd be a monster in the right chassis!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jmill
post Feb 18 2016, 01:47 PM
Post #7


Green Hornet
****

Group: Members
Posts: 2,449
Joined: 9-May 08
From: Racine, Wisconsin
Member No.: 9,038
Region Association: Upper MidWest
Go to the S10 Forums. Lots of high performance goodies are available for that engine (check Summit and JEGS). You can easily get 260 HP. I had one in an S10 Blazer. The turbo'd aluminum block GNX version would be insane in a teener.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
messix
post Feb 18 2016, 02:37 PM
Post #8


AKA "CLUTCH KILLER"!
*****

Group: Members
Posts: 6,995
Joined: 14-April 05
From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada
Member No.: 3,931
Region Association: Pacific Northwest
QUOTE(jmill @ Feb 18 2016, 11:47 AM) *

Go to the S10 Forums. Lots of high performance goodies are available for that engine (check Summit and JEGS). You can easily get 260 HP. I had one in an S10 Blazer. The turbo'd aluminum block GNX version would be insane in a teener.

Gnx has the Buick 3.8


Not the same engine
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
jmill
post Feb 18 2016, 06:45 PM
Post #9


Green Hornet
****

Group: Members
Posts: 2,449
Joined: 9-May 08
From: Racine, Wisconsin
Member No.: 9,038
Region Association: Upper MidWest
QUOTE(messix @ Feb 18 2016, 02:37 PM) *


Gnx has the Buick 3.8


Not the same engine


Well dang. I thought the were based off the same block. My bad.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bulldog9
post Feb 18 2016, 07:21 PM
Post #10


Senior Member
***

Group: Members
Posts: 705
Joined: 21-August 13
From: United States
Member No.: 16,283
Region Association: MidAtlantic Region
QUOTE(jmill @ Feb 18 2016, 08:45 PM) *

QUOTE(messix @ Feb 18 2016, 02:37 PM) *


Gnx has the Buick 3.8


Not the same engine


Well dang. I thought the were based off the same block. My bad.


Yeah, totally different engine. The 3.8 is a V-6 that dates back to the 60's as a 90degree V-6. A very stout motor...... The 4.3 is derived from the 350 V-8 minus two cylinders. Low rev, high torque. IMO, the 3.8 used in the GNX is a much better motor, even NA. In its later years was roller rocker and lifters, very smooth great Fuel Economy and an easy 200K. One benefit of the 4.3 was the plug and play of Pistons, Connecting Rods, Lifters, Rockers, Bearings, Timing chain, valves from the 350.....

I'd love to get my hands on one of the old Buick or Olds all aluminum V-8's. I had one in an Opel GT project years ago........ Back then they were all over the place. Now, impossible to find.... Ah the good old days.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mike Bellis
post Feb 18 2016, 07:34 PM
Post #11


Resident Electrician
*****

Group: Members
Posts: 8,345
Joined: 22-June 09
From: Midlothian TX
Member No.: 10,496
Region Association: None
I would go with a 5.7L V8 and reap the benefit of cheaper parts and more power.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
spaceshuttle
post Feb 18 2016, 09:32 PM
Post #12


Member
**

Group: Members
Posts: 73
Joined: 25-November 06
From: SouthCarolina
Member No.: 7,258
QUOTE(Mike Bellis @ Feb 18 2016, 06:34 PM) *

I would go with a 5.7L V8 and reap the benefit of cheaper parts and more power.


Here ya go.

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
flmont
post Feb 18 2016, 10:02 PM
Post #13


Senior Member
***

Group: Members
Posts: 879
Joined: 21-October 08
From: Tucson,Az
Member No.: 9,676
Region Association: Southwest Region
Yea I know about the v8's,...but I have the 6 if I could build close to 300HP,..i would be happy with that, but I do want FI,....Otherwise its the subie EZ30R ...not sure what kinda pwr that can reach stk is 240 or so,..
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
spaceshuttle
post Feb 18 2016, 10:10 PM
Post #14


Member
**

Group: Members
Posts: 73
Joined: 25-November 06
From: SouthCarolina
Member No.: 7,258
QUOTE(flmont @ Feb 18 2016, 09:02 PM) *

Yea I know about the v8's,...but I have the 6 if I could build close to 300HP,..i would be happy with that, but I do want FI,....Otherwise its the subie EZ30R ...not sure what kinda pwr that can reach stk is 240 or so,..


Look again. That is a 6. 4.3 Chevy. Confident that it will be over 450HP

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mike Bellis
post Feb 18 2016, 10:19 PM
Post #15


Resident Electrician
*****

Group: Members
Posts: 8,345
Joined: 22-June 09
From: Midlothian TX
Member No.: 10,496
Region Association: None
QUOTE(spaceshuttle @ Feb 18 2016, 08:10 PM) *

QUOTE(flmont @ Feb 18 2016, 09:02 PM) *

Yea I know about the v8's,...but I have the 6 if I could build close to 300HP,..i would be happy with that, but I do want FI,....Otherwise its the subie EZ30R ...not sure what kinda pwr that can reach stk is 240 or so,..


Look again. That is a 6. 4.3 Chevy. Confident that it will be over 450HP


But how much did you spend on it?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
spaceshuttle
post Feb 18 2016, 10:21 PM
Post #16


Member
**

Group: Members
Posts: 73
Joined: 25-November 06
From: SouthCarolina
Member No.: 7,258
QUOTE(Mike Bellis @ Feb 18 2016, 09:19 PM) *

QUOTE(spaceshuttle @ Feb 18 2016, 08:10 PM) *

QUOTE(flmont @ Feb 18 2016, 09:02 PM) *

Yea I know about the v8's,...but I have the 6 if I could build close to 300HP,..i would be happy with that, but I do want FI,....Otherwise its the subie EZ30R ...not sure what kinda pwr that can reach stk is 240 or so,..


Look again. That is a 6. 4.3 Chevy. Confident that it will be over 450HP


But how much did you spend on it?


(IMG:style_emoticons/default/av-943.gif) Way too much but it sure is fun! I had the engine and thought it would be fun in a 1750lb. car
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mike Bellis
post Feb 18 2016, 10:29 PM
Post #17


Resident Electrician
*****

Group: Members
Posts: 8,345
Joined: 22-June 09
From: Midlothian TX
Member No.: 10,496
Region Association: None
QUOTE(spaceshuttle @ Feb 18 2016, 08:21 PM) *

Look again. That is a 6. 4.3 Chevy. Confident that it will be over 450HP

(IMG:style_emoticons/default/av-943.gif) Way too much but it sure is fun! I had the engine and thought it would be fun in a 1750lb. car

Might be fun and all but a V8 will make more power for less money.

So it all depends on your budget...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
flmont
post Feb 18 2016, 10:33 PM
Post #18


Senior Member
***

Group: Members
Posts: 879
Joined: 21-October 08
From: Tucson,Az
Member No.: 9,676
Region Association: Southwest Region
I think 300-350 HP is about right for a 914,..being I have the engine a supposed vortec at 200hp should'nt take much to get 250 275,..,..the subie engines are around 1500.00 plus all the ECU expense,..at near 2500.00 from outfront,..hell 4 k already,..and I
have all that already for 250.00 bucks
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
spaceshuttle
post Feb 18 2016, 10:33 PM
Post #19


Member
**

Group: Members
Posts: 73
Joined: 25-November 06
From: SouthCarolina
Member No.: 7,258
QUOTE(spaceshuttle @ Feb 18 2016, 09:21 PM) *

QUOTE(Mike Bellis @ Feb 18 2016, 09:19 PM) *

QUOTE(spaceshuttle @ Feb 18 2016, 08:10 PM) *

QUOTE(flmont @ Feb 18 2016, 09:02 PM) *

Yea I know about the v8's,...but I have the 6 if I could build close to 300HP,..i would be happy with that, but I do want FI,....Otherwise its the subie EZ30R ...not sure what kinda pwr that can reach stk is 240 or so,..


Look again. That is a 6. 4.3 Chevy. Confident that it will be over 450HP


But how much did you spend on it?


(IMG:style_emoticons/default/av-943.gif) Way too much but it sure is fun! I had the engine and thought it would be fun in a 1750lb. car



I do have another one that I broke the crank in. I have a set of the little Brody aluminum heads and it has a kickin little .600 cam. If you are interested, I would sell you some of the parts. It made 300 with just the heads and the cam.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
flmont
post Feb 18 2016, 10:35 PM
Post #20


Senior Member
***

Group: Members
Posts: 879
Joined: 21-October 08
From: Tucson,Az
Member No.: 9,676
Region Association: Southwest Region
Mike,..your car is 325 HP are u happy with that,..and with the handeling,..of course your set up is more than stk,..I know..
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

4 Pages V  1 2 3 > » 
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 1st June 2024 - 04:16 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...