1991 5.8L engine internals?
Thread Starter
|
Freshman User
Joined: Jan 2009
Posts: 30
Likes: 0
1991 5.8L engine internals?
I will be acquiring a 5.8L from a 1991 Bronco to install in my 77 F150 EFI and all. I would like to know what to expect for longevity of this engine. Mileage is unknown. My main question is does this engine have cast pistons? I thought the first year for hyperutectic (spelling?) pistons was 1992, anyone know for sure? The reason I ask is if I mod this engine ie GT40 heads and a cam, non-roller I assume, can I expect the pistons to live through it?
Thanks
Matt
Thanks
Matt
Senior User
Joined: Sep 2007
Posts: 144
Likes: 0
From: Garage Floor
It doesnt matter what the piston is made of, itll be fine with the combo you list. Its only when you start throwin a good bit of boost or nitrous at em that the cast and hyper pistons start havin issues. For a HCI motor you can rest assured that itll be ok. As for the rest, the rods are STOUT from the factory. Im almost down puttin together a 12:1 compression 393 stroker for my 90 mustang that is using stock truck 351 rods with ARP studs and im not loosin any sleep. Tear the motor down, inspect it for odd wear patterns and if you have time and $, rebuild it while its out using the stock parts and itll be ready to rock!!! Good luck with it!
Matt
Matt
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
As far as I know the only 5.8 to get anything but cast pistons was the Lightning and even then they was only hypereutectic. Even so there is nothing to worry about in this motor at lower power levels(under 450hp) unless you get into boost or wind it up past 6500 rpm.
Thread Starter
|
Freshman User
Joined: Jan 2009
Posts: 30
Likes: 0
Thanks for the replies. I will probably use it in stock form for a while. I forgot about the head bolt side differences from 5.0 to 5.8, my plan of getting junkyard Gt-40s from an explorer is foiled without paying to have the bolt holes enlarged.
Anyone have any experience with an Explorer roller cam added in an otherwise stock 5.8?
Anyone have any experience with an Explorer roller cam added in an otherwise stock 5.8?
Senior User
Joined: Sep 2007
Posts: 144
Likes: 0
From: Garage Floor
You could do the work yourself on enlarging the holes, or find someone local with a drill press and pay them...sometimes all it takes is a good meal or a case of beer!
Matt
Matt
Trending Topics
Postmaster
Joined: May 2008
Posts: 2,703
Likes: 3
From: La Vergne, TN
Thanks for the replies. I will probably use it in stock form for a while. I forgot about the head bolt side differences from 5.0 to 5.8, my plan of getting junkyard Gt-40s from an explorer is foiled without paying to have the bolt holes enlarged.
Anyone have any experience with an Explorer roller cam added in an otherwise stock 5.8?
Anyone have any experience with an Explorer roller cam added in an otherwise stock 5.8?
and besides having someone drill out the bold holes shouldnt cost much.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
That's what is in the '94+ 5.8 motors, but you'll need some expensive linkbar lifters to put in it the older non-roller block. Besides the Crane 444232 flat tappet is much better suited to the 5.8 and yes it is SD friendly.
Thread
Thread Starter
Forum
Replies
Last Post
Freddie Murphy
1987 - 1996 F150 & Larger F-Series Trucks
16
Oct 20, 2015 12:46 PM
Ecarlton1991
1987 - 1996 F150 & Larger F-Series Trucks
4
Aug 14, 2011 06:20 PM
rockcrawler_101
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
8
Nov 16, 2009 04:03 PM
ckchevyman26
1987 - 1996 F150 & Larger F-Series Trucks
2
Aug 18, 2003 11:45 AM
