Pennock's Fiero Forum
  Technical Discussion & Questions
  spec change for swap

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
spec change for swap by sledcaddie
Started on: 10-04-2013 05:16 PM
Replies: 9 (131 views)
Last post by: Raydar on 10-05-2013 01:12 AM
sledcaddie
Member
Posts: 318
From: Lincoln, NE USA
Registered: Aug 2011


Feedback score: N/A
Leave feedback

Rate this member

Report this Post10-04-2013 05:16 PM Click Here to See the Profile for sledcaddieSend a Private Message to sledcaddieEdit/Delete MessageReply w/QuoteDirect Link to This Post
So, I read lots about swaps from 2.8 to the 3.4. The block is identical and all manifolds, etc just bolt right up? Also, is it really worth the cost? What's the horsepower of the 2.8 compared to that of the 3.4? Does the 3.4 push you into your seat?
IP: Logged
PFF
System Bot
hiwil88formula
Member
Posts: 617
From: San Antonio, Texas
Registered: Oct 2001


Feedback score:    (12)
Leave feedback

Rate this member

Report this Post10-04-2013 05:21 PM Click Here to See the Profile for hiwil88formulaClick Here to Email hiwil88formulaSend a Private Message to hiwil88formulaEdit/Delete MessageReply w/QuoteDirect Link to This Post
Yes everything bolts right up from the 2.8. As far as HP diff go, the factory 3.4 is rated at 160 hp, the 2.8 is rated at 135-140 hp. Torque is the biggest improvement with the 3.4 swap. I really enjoy driving mine, and it is also the cheapest swap around. I plan on getting mine dyno'd this weekend.
IP: Logged
trotterlg
Member
Posts: 1378
From: WA
Registered: Aug 2011


Feedback score: (2)
Leave feedback

Rate this member

Report this Post10-04-2013 05:26 PM Click Here to See the Profile for trotterlgClick Here to Email trotterlgSend a Private Message to trotterlgEdit/Delete MessageReply w/QuoteDirect Link to This Post
Isn't the starter on the wrong side? Larry
IP: Logged
dobey
Member
Posts: 11572
From:
Registered: Sep 2001


Feedback score: N/A
Leave feedback





Total ratings: 371
User Banned

Report this Post10-04-2013 05:31 PM Click Here to See the Profile for dobeySend a Private Message to dobeyEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by trotterlg:

Isn't the starter on the wrong side? Larry


Yes, but easily fixed with a drill and tap.
IP: Logged
trotterlg
Member
Posts: 1378
From: WA
Registered: Aug 2011


Feedback score: (2)
Leave feedback

Rate this member

Report this Post10-04-2013 05:50 PM Click Here to See the Profile for trotterlgClick Here to Email trotterlgSend a Private Message to trotterlgEdit/Delete MessageReply w/QuoteDirect Link to This Post
So I guess it is not "identical". Larry
IP: Logged
NetCam
Member
Posts: 1490
From: Milton, Ontario, Canada
Registered: Mar 2012


Feedback score: N/A
Leave feedback

Rate this member

Report this Post10-04-2013 07:09 PM Click Here to See the Profile for NetCamClick Here to visit NetCam's HomePageSend a Private Message to NetCamEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by trotterlg:

So I guess it is not "identical". Larry


Yes, of course.... the dreaded "Almost identical"
IP: Logged
dobey
Member
Posts: 11572
From:
Registered: Sep 2001


Feedback score: N/A
Leave feedback





Total ratings: 371
User Banned

Report this Post10-04-2013 10:08 PM Click Here to See the Profile for dobeySend a Private Message to dobeyEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by trotterlg:

So I guess it is not "identical". Larry


Technically, no two blocks are "identical," even if they are both 2.8s out of Fieros. Slight variations in how the tools interact with the castings during machining, and various tolerance ranges, result in minor differences for every engine block ever produced. If you want to be pedantic about it.

The main differences between the 2.8 Fiero block and the 3.4 Camaro block is that the starter mount holes were machined on the other side, and the bore is larger on the 3.4.
IP: Logged
sledcaddie
Member
Posts: 318
From: Lincoln, NE USA
Registered: Aug 2011


Feedback score: N/A
Leave feedback

Rate this member

Report this Post10-04-2013 11:19 PM Click Here to See the Profile for sledcaddieSend a Private Message to sledcaddieEdit/Delete MessageReply w/QuoteDirect Link to This Post
So, you listed the horsepower, but stated the torque was the biggest change. What is the torque rating for both engines? Thanks for everyone's input.
IP: Logged
n7vrz
Member
Posts: 521
From: Dixon Springs, TN
Registered: Dec 2010


Feedback score: (1)
Leave feedback

Rate this member

Report this Post10-04-2013 11:32 PM Click Here to See the Profile for n7vrzClick Here to Email n7vrzSend a Private Message to n7vrzEdit/Delete MessageReply w/QuoteDirect Link to This Post
The torque for the L44 2.8 L engine in the Fiero is rated at 170 lb-ft.
The torque for the L32 3.4 L used in the Camaro and Firebird was 200 lb·ft.
IP: Logged
Raydar
Member
Posts: 38538
From: Carrollton GA. Out in the... country.
Registered: Oct 1999


Feedback score:    (11)
Leave feedback





Total ratings: 451
Rate this member

Report this Post10-05-2013 01:12 AM Click Here to See the Profile for RaydarClick Here to Email RaydarSend a Private Message to RaydarEdit/Delete MessageReply w/QuoteDirect Link to This Post
When I was breaking in my 3.4, my only real observation was that the 3.4 was the engine that the Fiero should have come with, right out of the box.
That was before I pulled it back out to build it up. (First rule of hotrodding... If "more" is enough, then "too much" is just right.)

What makes it "worth the cost" is if your 2.8 has given up the ghost.
It's not really any more expensive to rebuild and swap in a 3.4 than it is to rebuild a 2.8.
And any mods that will work for a 2.8 will work even better for a 3.4.

[This message has been edited by Raydar (edited 10-05-2013).]

IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock