|
Author
|
Topic: Minimum pistion to valve clearance for 289/ afr 165's?
|
ga289stocker
Gearhead Posts: 129
From: Sugar Hill, Ga
Registered: May 2006
|
posted 08-15-2006 12:00 PM
 
I have a 289 and am switching from stock cast heads to afr 165's
I have flat top pistons and trying to determine which head gasket to use. Is there a rule of thumb distance that you should not go below in terms of clearance between piston's and valves? Thanks for any input...
------------------
289 A code 4v, 4spd, stock heads 3.55 open, best et 14.44 @97.29http://i22.photobucket.com/albums/b320/ga289stocker/yard2.jpg
|
cracing
Gearhead Posts: 640
From: Saltillo Miss. USA
Registered: Jan 2002
|
posted 08-15-2006 05:00 PM
289, I think different people have differing views on your question. Some folks say .060 is OK, I keep my intakes no less than .080, & exhaust no less than .100, but thats me AND on a fat motor.Remember to check it in the overlap position. BC
|
ga289stocker
Gearhead Posts: 129
From: Sugar Hill, Ga
Registered: May 2006
|
posted 08-16-2006 03:01 PM
If i use say a .039 compressed gasket would i have enough clearance? I'd like to get back a little compression if possible w/o milling the heads. ------------------
289 A code 4v, 4spd, stock heads 3.55 open, best et 14.44 @97.29http://i22.photobucket.com/albums/b320/ga289stocker/yard2.jpg
|
f100cleveland
Gearhead Posts: 505
From: St. James, MN
Registered: Sep 2004
|
posted 08-16-2006 10:38 PM
Have you checked your actual piston to valve clearance yet? We can't tell you if a certain thickness gasket will be safe unless you can tell us what the clearance is? Your cam is basically what determines your clearance. ------------------
1982 Ford F100 2wd Shortbox. Powered by a 357 Cleveland w/ stuffed closed chamber 4v's and a Funnelweb. Full Roller c-6 trans with Art Car trans brake, custom 4200 JPT converter, a Gear Vendors Overdrive and 4.86 geared Detroit Locker equipped 9" rear. 336.6 RWHP @ 7000 rpm and 358.2 RWTQ @ 4500 rpm.
1982 F100 351c 4v 1977 F150 460 Burnout Truck
|
