Cylinder heads |
Post Reply |
Author | |
ericeugene
New Member Joined: 16-December-2008 Status: Offline Points: 1 |
Post Options
Thanks(0)
Posted: 16-December-2008 at 7:46PM |
I have a 71 Toruno 500 w/ a 302 that was bone stock when I got it. I have put new intake, carb, headers and noticed when I went to put new spark plugs in, the autolite 45 were too big, the 25 series fit the heads. I was told that 1977 or so was when Ford made the heads that take the smaller diameter spark plugs. Can anyone shed some light on this? Should I get the casting number to see exactly what I have?
Thanks, Eric.
|
|
starsky76
Senior Member Joined: 28-March-2008 Location: vegas Status: Offline Points: 1385 |
Post Options
Thanks(0)
|
Someone must have swapped out the heads or probably the whole motor for a later model one.If you can post the head numbers and block numbers I can tell you what year it is.There's not a lot of difference on the late model stuff,you could probably just get an early 80's 302 plugs and would be fine.
|
|
ilyes
Senior Member Joined: 09-January-2010 Location: Philadelphia PA Status: Offline Points: 3782 |
Post Options
Thanks(0)
|
sorry to hijack, but i need some info i can't find on google I wanna know what's the max lift on 302 stock heads?
I have to get a new came this week end, and i'm lookking for something with 512/512 or 496/520 lift.
Is it gonna be ok, or i should expect clearence issues?
|
|
Blueoval76
Senior Member Member of the Stroker Club Joined: 20-February-2010 Location: Sussex WI Status: Offline Points: 698 |
Post Options
Thanks(0)
|
Llyes, from what I was told at my performance shop .550 lift is the max on a stock late model 302 but that is really pushing it. The .512 should be fine but your springs may not handle the lift as worn springs are weaker at higher lift rates.
Jesse Edited by Blueoval76 - 07-July-2010 at 2:13PM |
|
68 Galaxie Wagon 390/auto/2.70
03 Bonneville some mods |
|
ilyes
Senior Member Joined: 09-January-2010 Location: Philadelphia PA Status: Offline Points: 3782 |
Post Options
Thanks(0)
|
thanks, i'm still not sure if i will run these on my heads, it depends of the money i have and where i will move. If i can, i was thinking of GT40P heads, i know they can take the lift, but i wasn't sure for the stock ones.
In case i put the cam with my current heads, it will be for less than 2 months
|
|
Blueoval76
Senior Member Member of the Stroker Club Joined: 20-February-2010 Location: Sussex WI Status: Offline Points: 698 |
Post Options
Thanks(0)
|
|
|
68 Galaxie Wagon 390/auto/2.70
03 Bonneville some mods |
|
ilyes
Senior Member Joined: 09-January-2010 Location: Philadelphia PA Status: Offline Points: 3782 |
Post Options
Thanks(0)
|
thanks for the tips, and yep, the cam i'm gonna run will not work with stock springs
|
|
Post Reply | |
Tweet |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |