Tech / General EngineIs your car making a strange sound or won't start? Thinking of adding power with a new combination? Need other technical information or engine specific advice? Don't see another board for your problem? Post it here!
Welcome to ThirdGen.org!
Welcome to ThirdGen.org.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!
well today i went out and pulled the valve cover to fix a rocker tapping, well i found the cylnder its tapping and tighten them down, they never catch just keep tightning, so i then decide that i now need to take them off to get screw in studs, damit.
well i go to run the casting numbers to see what kidn of heads they are to see if they are worth being worked over since i have 3 other pairs of heads. i copy this number donw
899883
J2472
GM
6
what do you all make of this, by the way this is the passenger side head and did i copy it down right or what.
please help me. thanks
__________________
looking for a V6 or V8 , from 83-92 camaro or 85-92 bird, body must be good, paint condition doesn't matter, it just MUST BE A MANUAL, and must be around $1,500
"899883" doesn't show up at www.mortec.com Check the casting number carefully and with a good light. An '8' can look like a '3', and vice versa.
If you determine the heads are not worth a lot of work, you have the option of driving the stud back down and cross-drilling/pinning the stud, of removing the stud and tapping for a screwed repair stud. Screwed studs are about a dollar apiece. Roll pins are dirt cheap, but will require a long (aircraft) drill and either a TiN coated or carbide drill to penetrate the hardedned stud. Depending on the locations, you might not even be able to get a drill (even an angle drill) into the space necessary to drill the stud boss. Personally, the tapping method is my preference.
If you tap for a screwed stud and decide to work the heads over, you can use the same threads for good replacement studs after boss machining.
__________________ Later,
Vader
- - - - - - - - - - - - - - - - - - "Everything should be made as simple as possible, and not one step simpler."
What are you running them on 350? The 993 aren't just Made in Mexico crate heads, they came on production vehicles also. I have a set off a 73 3/4 ton truck 4-bolt 350.
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
Oh yeah the 993's that came on production vehicles are decent smog heads. They flow amongst the best smog heads, the only problem is they have 74cc chambers.
__________________ LT1 headed LG4 305 beast! Comp Solid lifter XS-262-10S, 1.6 Roller Rockers, 10.2:1, Holley 4160 600cfm, modded Weiand 7502 intake to fit LT1 heads____ Custom cylinder head cooling. Weiand 8208 Short Water Pump____TH-350 3 series 3.73 with 2 series posi and spacer____ Hedman Hedders 1 5/8 headers and Y-pipe 3in Exhaust, Dynomax 3" Bullet muffler ____Moroso Ultra 40 Wires ACCEL HEI Super Coil ____Competition Engineering 3120 Bolt-on SFC's____Homemade: Wonderbar, solid tie rod sleeves, Aluminum LCA and Panhard Rod with spherical rod ends, alternator and PS bracket, Strut tower brace, and Decoupling torque arm with telescoping link.
3000lbs
"The liberty of a democracy is not safe if the people tolerate the growth of private power to a point where it becomes stronger than their democratic State itself. That, in its essence, is Fascism - ownership of government by an individual, by a group or by any controlling private power."
-FDR
"If this were a dictatorship, it'd be a heck of a lot easier, just so long as I'm the dictator."
-- President George W. Bush
During a photo-op with Congressional leaders on 12/18/2000.
