Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
Sponsored by:
Sponsored by: Moser

two questions...

Thread Tools
 
Search this Thread
 
Old Oct 14, 2010 | 06:55 PM
  #1  
f100help's Avatar
f100help
Thread Starter
|
Senior User
Joined: Aug 2010
Posts: 121
Likes: 0
two questions...

I went to napa to get some spark plugs and they gave me the wrong ones. I went back and they showed that the spark plugs in the system showed a different type. The new ones were skinny, and the OEM? ones from napa were fat like a chevy... didnt know if this was a normal thing but just had me curious since they were sure i have different heads on the engine. New spark plugs are numbered 24... anyone have a clue on this?

also, ive been browsing the interwebs for info and ive heard mixed opinions about putting 351w headers on a 302... some say yes, some say no... i know model and type come into play but im just curious
 
Reply
Old Oct 14, 2010 | 07:05 PM
  #2  
79FordBlake's Avatar
79FordBlake
Posting Guru
Joined: Feb 2007
Posts: 1,735
Likes: 2
From: Wingo, Ky
Earlier 302s has 13/16 plugs. Later ones have 5/8 plugs.
 
Reply
Old Oct 14, 2010 | 07:20 PM
  #3  
merccougar93's Avatar
merccougar93
Senior User
Joined: Jun 2010
Posts: 328
Likes: 0
hmmmmmmm. the spark plugs in our 74 302 are 5/8......
 
Reply
Old Oct 14, 2010 | 07:25 PM
  #4  
maskedman's Avatar
maskedman
Senior User
Joined: Feb 2009
Posts: 308
Likes: 0
From: Southern NM
Autolite makes the "24" spark plug.It is a 14mm tapered seat plug with a reach of .460 in.A better plug is the 25 as it is a hotter range plug.Hope this helps.It is a 5/8 hex.
 
Reply
Old Oct 14, 2010 | 07:27 PM
  #5  
Flat_Ford's Avatar
Flat_Ford
Senior User
Joined: Aug 2010
Posts: 222
Likes: 0
i second what fordblake said...early 302's would use an autolite 45 while newer one i think sometime in the early-mid 80's would use the 24-25's
 
Reply
Old Oct 14, 2010 | 07:50 PM
  #6  
f100help's Avatar
f100help
Thread Starter
|
Senior User
Joined: Aug 2010
Posts: 121
Likes: 0
Originally Posted by Flat_Ford
i second what fordblake said...early 302's would use an autolite 45 while newer one i think sometime in the early-mid 80's would use the 24-25's
where is the block stamped at, as well as the heads... i guess i really need to find out what motor this is?
 
Reply
Old Oct 14, 2010 | 08:49 PM
  #7  
merccougar93's Avatar
merccougar93
Senior User
Joined: Jun 2010
Posts: 328
Likes: 0
i wonder if my heads were swapped at some points. I actually pulled them today to get them machined. Im curious if it has been rebuilt before we bought it a few months ago, because the lifters have absolutely no wear spot on them. Sorry bout the thread-jacking.
 
Reply
Old Oct 14, 2010 | 10:52 PM
  #8  
Flat_Ford's Avatar
Flat_Ford
Senior User
Joined: Aug 2010
Posts: 222
Likes: 0
the block is stamped above the starter..you'll probably have to remove it to see the casting number...but all that it can tell you is the block year...and i'm not sure about the heads but i want to say it's in the area under the valve covers. since the block is the easiest if it is stamped way off from the year your truck is i'd bet the heads are original to the block.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-1

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-2

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-3

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-4

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-5

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-6

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
story-7

Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

 Joe Kucinski
story-8

Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

 Michael S. Palmer
story-9

The Best F-150 Deal of Every Trim Level (XL through Raptor)

 Joe Kucinski
Old Oct 15, 2010 | 12:16 AM
  #9  
f100help's Avatar
f100help
Thread Starter
|
Senior User
Joined: Aug 2010
Posts: 121
Likes: 0
that makes sense. im going to have to replace the starter soon, so ill look at that when i do it. Kinda makes me mad that i dont have an all original...

Any thoughts on the headers? 351w on a 302?
 
Reply




All times are GMT -5. The time now is 01:59 AM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE