This is topic piston to valve clearence in forum Tech Talk at Northern California Ford Owners  .


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Posted by tincan (Member # 8270) on :
 
first of all im new here and would like to say hello. ok on to the good stuff, i have afr 185s with the stock cam and so far no clearence issues but i would like to upgrade cam but i first have to notch the pistons. if i dont it will hit, just curious if any one here has done it with just a rotory tool?? the heads are on a stock 1987 ho

thanks
 
Posted by porchstang (Member # 7937) on :
 
There is a tool you can use in place of a valve and it will cut the pocket perfect on the piston for you i belive that Herbert cams has it.
 
Posted by SmokinLX (Member # 1684) on :
 
quote:
Originally posted by porchstang:
There is a tool you can use in place of a valve and it will cut the pocket perfect on the piston for you i belive that Herbert cams has it.
I believe You are refering to the "isky" tool. I have AFR 185's and bought a shortblock off a member here and He used this tool to cut bigger relief's in My piston's. He said it was time consuming but it beat's spending money on new piston's.
 
Posted by tincan (Member # 8270) on :
 
thanks for the reply, i will look into this tool have any of you guys used it? im guessing you would have to remove all valves then put this tool in and bolt the head down and then cut then take the head off put tool in next hole bolt down and so on?
 
Posted by SmokinLX (Member # 1684) on :
 
quote:
Originally posted by tincan:
thanks for the reply, i will look into this tool have any of you guys used it? im guessing you would have to remove all valves then put this tool in and bolt the head down and then cut then take the head off put tool in next hole bolt down and so on?
You will have to put the cam in and then pull the head's and cut the piston & clay each cylender to check for clearance. FYI I have the F cam in Mine.
 
Posted by tincan (Member # 8270) on :
 
how do you like the f cam? the reason i ask is because when i put these heads on i lost a lot of low end torque and im trying to get some back.
thanks
 
Posted by SmokinLX (Member # 1684) on :
 
quote:
Originally posted by tincan:
how do you like the f cam? the reason i ask is because when i put these heads on i lost a lot of low end torque and im trying to get some back.
thanks
I have an AOD with a pretty big stall so it goes stright to 5000 rpm's when I put the loud pedal to the floor & it also pull's hard to 6500. I will go custom on My next build "dart block" but with a stockblock the F cam work's well and put's Me into block splitting power level with 12 #'s of boost & the F cam came in the shortblock that I purchased so I can't complain. I had the E cam before and this cam out perform's the E and idles alot smoother.
 
Posted by tincan (Member # 8270) on :
 
how big of a stall is it? 12#s of boost huh..im not running any boost, i guess thats why im having low end torque issues with these big heads on this stock bottom end
 
Posted by SmokinLX (Member # 1684) on :
 
quote:
Originally posted by tincan:
how big of a stall is it? 12#s of boost huh..im not running any boost, i guess thats why im having low end torque issues with these big heads on this stock bottom end
It's an edge 9.5 inch street/strip. What gear's You running? What intake? Manual or auto? I would think the stock cam would be Your best bet on the low end [Confused] ? I had the E cam in Mine before the boost with My AFR's and even with a shitty B&M converter & 373's and it had decent low end. What cam You going to go to & are You going to keep it NA?
 
Posted by tincan (Member # 8270) on :
 
its an automatic, stock converter, the intake is and edelbrock performer i just got 373s today but have not installed them im thinking its going to stay n/a. unless i can get a good deal on a s/c. the cam im not sure on which one to go with.

[ March 13, 2008, 10:34 PM: Message edited by: tincan ]
 
Posted by SmokinLX (Member # 1684) on :
 
quote:
Originally posted by tincan:
its an automatic, stock converter, the intake is and edelbrock performer i just got 373s today but have not installed them im thinking its going to stay n/a. unless i can get a good deal on a s/c. the cam im not sure on which one to go with.
You aer'nt going to get the performance You want with stock gear's & converter. I would recommend going to www.clickclickracing.com and reading up on what it is going to take to make that AOD live behind Your newfound power [Wink] , I would say at minimum You will need a 1 piece input shaft and a shift kit. Next get those gear's installed & contact Andre @ www.edgeracingconverters.com and He will set You up with a converter [burnout] . But 1st You are going to have to figure out if You are going to put a cam in it or not?

http://www.corral.net/forums/showthread.php?t=963147

Here is a decent thread with a similar combo to Your's and You should do a custom cam! If You can't afford to do everything at once then do the gear's, tranny mod's, and converter now & save for the cam down the road. You can't believe the difference you will feel when You put the edge converter in Your ride [Eek!] . Take care of the driveline before You do the cam [Wink] .
 
Posted by tincan (Member # 8270) on :
 
thanks smokinglx i appreciate all your help and all the info. i just went to talk to a guy about installing my gears and he said he would have time next weekend to put them in. i will take your advise about the tranny and and stall i will also try and find out more on the custom cam. looks like i have more homework to do........
 




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