??? Milling heads, head gasket thickness, pushrod length ???
05-11-2002, 01:57 AM
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??? Milling heads, head gasket thickness, pushrod length ??? I have a Hammercam on the way.
I need to know what thickness to mill the head, what head gasket to run for around 11.0 compression ratio, and what length pushrod to order.
I need new valves so I was going to install Ferrea 2.02/1.55 valves. Opinions??
Thanks,
Eric
I need to know what thickness to mill the head, what head gasket to run for around 11.0 compression ratio, and what length pushrod to order.
I need new valves so I was going to install Ferrea 2.02/1.55 valves. Opinions??
Thanks,
Eric
05-11-2002, 04:29 AM
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Re: ??? Milling heads, head gasket thickness, pushrod length ??? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Amarillo3:
<strong>I have a Hammercam on the way.
I need to know what thickness to mill the head, what head gasket to run for around 11.0 compression ratio, and what length pushrod to order.
I need new valves so I was going to install Ferrea 2.02/1.55 valves. Opinions??
Thanks,
Eric</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">My heads are milled 30thous and I was going to go with .40 head gasket thickness.I am using 7.325 I believe pushrods.The shorter ones you know.That would have put me right at 11:1:1 compression or somewhere close.
<strong>I have a Hammercam on the way.
I need to know what thickness to mill the head, what head gasket to run for around 11.0 compression ratio, and what length pushrod to order.
I need new valves so I was going to install Ferrea 2.02/1.55 valves. Opinions??
Thanks,
Eric</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">My heads are milled 30thous and I was going to go with .40 head gasket thickness.I am using 7.325 I believe pushrods.The shorter ones you know.That would have put me right at 11:1:1 compression or somewhere close.
05-11-2002, 02:20 PM
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Re: ??? Milling heads, head gasket thickness, pushrod length ??? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Amarillo2:
<strong>Let's say I want to use the 7.35 pushrods and a readily acessible headgasket. What would I mill the heads to?
I'm going to try and get some pushrods from the classifieds section to save a little money and there are always some 7.35 around.
Eric</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What do you mean by readily accessible head gaskets?I would go 30thous and .40 on the head gaskets.
<strong>Let's say I want to use the 7.35 pushrods and a readily acessible headgasket. What would I mill the heads to?
I'm going to try and get some pushrods from the classifieds section to save a little money and there are always some 7.35 around.
Eric</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What do you mean by readily accessible head gaskets?I would go 30thous and .40 on the head gaskets.
05-11-2002, 05:41 PM
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Re: ??? Milling heads, head gasket thickness, pushrod length ??? I can dig it!
7.35 pushrods
30thous mill
.40 head gasket
that's the answer I needed
by readily acessible I meant like the NAPA head gasket for $13 bucks. I assume you can get them in that size for that price.
7.35 pushrods
30thous mill
.40 head gasket
that's the answer I needed
by readily acessible I meant like the NAPA head gasket for $13 bucks. I assume you can get them in that size for that price.
05-11-2002, 08:29 PM
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Re: ??? Milling heads, head gasket thickness, pushrod length ??? The Cam Base circle depends on it's lift...
Most likely the milling and smaller base lobe cancel each other out. But bringing the stock preload down will help control the valvetrain.
All depends on your cam lift really.
Most likely 7.350"s are the right way to go. If you go above .560 lift you might not need the shorter ones.
Most likely the milling and smaller base lobe cancel each other out. But bringing the stock preload down will help control the valvetrain.
All depends on your cam lift really.
Most likely 7.350"s are the right way to go. If you go above .560 lift you might not need the shorter ones.
05-12-2002, 12:38 AM
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Re: ??? Milling heads, head gasket thickness, pushrod length ??? Let's say I want to use the 7.35 pushrods and a readily acessible headgasket. What would I mill the heads to?
I'm going to try and get some pushrods from the classifieds section to save a little money and there are always some 7.35 around.
Eric
I'm going to try and get some pushrods from the classifieds section to save a little money and there are always some 7.35 around.
Eric
05-12-2002, 06:27 PM
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Re: ??? Milling heads, head gasket thickness, pushrod length ??? So how do I figure it all out so I can take it to the machine shop and have everything ready to go?
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05-12-2002, 07:51 PM
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Re: ??? Milling heads, head gasket thickness, pushrod length ??? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by MelloYellow:
<strong>The Cam Base circle depends on it's lift...
Most likely the milling and smaller base lobe cancel each other out. But bringing the stock preload down will help control the valvetrain.
All depends on your cam lift really.
Most likely 7.350"s are the right way to go. If you go above .560 lift you might not need the shorter ones.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Then he would have to have custom ones made correct?Everyone on here with milled heads runs the 7.35s.Unless they had some custom made which I have not seen but can be done.
<strong>The Cam Base circle depends on it's lift...
Most likely the milling and smaller base lobe cancel each other out. But bringing the stock preload down will help control the valvetrain.
All depends on your cam lift really.
Most likely 7.350"s are the right way to go. If you go above .560 lift you might not need the shorter ones.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Then he would have to have custom ones made correct?Everyone on here with milled heads runs the 7.35s.Unless they had some custom made which I have not seen but can be done.
05-13-2002, 07:26 PM
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Re: ??? Milling heads, head gasket thickness, pushrod length ??? The other info I'd need to chew.. What is stock lift again & stock cam base circle?
I 'think' stock base circle was 1.550", right?
But I forget the lift..
FWIW, my .566 CompCam had a 1.495"-1.500" base circle...
So, his cam would reduce his stock preload by .5 x.055, or -.027 Preload from stock. (Only half of the circle lifts the lifter at any time). So, he's +.030 preload with the shorter heads and -.027 preload with the cam base circle change. Pretty much evens things out.
The Q might be, do you really want to run stock preload at higher rpm's? and What is stock lifter preload from the factory?
CompCams prefers to see .025-.050 preload with Stock lifters to keep the higher rpm valvetrain under control.
Just my .02, feel free to correct.
<small>[ May 13, 2002, 07:28 PM: Message edited by: MelloYellow ]</small>
I 'think' stock base circle was 1.550", right?
But I forget the lift..
FWIW, my .566 CompCam had a 1.495"-1.500" base circle...
So, his cam would reduce his stock preload by .5 x.055, or -.027 Preload from stock. (Only half of the circle lifts the lifter at any time). So, he's +.030 preload with the shorter heads and -.027 preload with the cam base circle change. Pretty much evens things out.
The Q might be, do you really want to run stock preload at higher rpm's? and What is stock lifter preload from the factory?
CompCams prefers to see .025-.050 preload with Stock lifters to keep the higher rpm valvetrain under control.
Just my .02, feel free to correct.
<small>[ May 13, 2002, 07:28 PM: Message edited by: MelloYellow ]</small>
05-13-2002, 08:23 PM
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Re: ??? Milling heads, head gasket thickness, pushrod length ??? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Amarillo2:
<strong>Hammercam - 222/222 .566/.566 112 LSA</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I have no clue if it will fit.You may want to call a sponsor to be sure.
<strong>Hammercam - 222/222 .566/.566 112 LSA</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I have no clue if it will fit.You may want to call a sponsor to be sure.
