PRC 5.3L, 62cc, stage 2.5, will this cam fit?
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PRC 5.3L, 62cc, stage 2.5, will this cam fit?
2.02/1.575 valves,
will this cam fit without having to flycut?
236*-240*-.631"-.610", 111+2 lsa
i have done research, have called, but still feel compelled to ask you guys for input/feedback/ideas.
thanks in advance for your time.
will this cam fit without having to flycut?
236*-240*-.631"-.610", 111+2 lsa
i have done research, have called, but still feel compelled to ask you guys for input/feedback/ideas.
thanks in advance for your time.
Last edited by jegten; 09-14-2007 at 01:23 AM.
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I dont think you'll find anyone guessing anything bigger then 228 on a 112 would work. serioiusly, stick with the first cam and just suck it up and flycut. if you put in a smaller cam just to save a couple hundy (after spending all this money so far) you'll be shooting yourself for it later. several sponsors rent the nec. equipment to do the job. in the end. it'll cost you about $200 if you do it yourself. not too bad since it'll allow you to have a KILLER setup with the great quench, SCR, DCR and great power cam. see my sticky at the top of the forum and you'll see its not that bad at all.
chris
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Originally Posted by Irocss85
I dont think you'll find anyone guessing anything bigger then 228 on a 112 would work. serioiusly, stick with the first cam and just suck it up and flycut. if you put in a smaller cam just to save a couple hundy (after spending all this money so far) you'll be shooting yourself for it later. several sponsors rent the nec. equipment to do the job. in the end. it'll cost you about $200 if you do it yourself. not too bad since it'll allow you to have a KILLER setup with the great quench, SCR, DCR and great power cam. see my sticky at the top of the forum and you'll see its not that bad at all.
chris
chris
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I just got my custom cam today from Patrick G and the final specs were 231/233 .613/.594 111+2lsa. I have the same exact heads. I would go custom. But flycutting is not a bad idea either. I wish I would of found a truck to take my car to the shop to go get it done. I would've stick w/ my vindicator cam. Oh well.
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well, this setup is supposed to fit the MS3 with about .080/.070" clearance.
hmm...
i was thinking about the flycutting, but i just finished this a little over a month ago.
well, i guess i don't mind especially if i get what i want.
hmm...
i was thinking about the flycutting, but i just finished this a little over a month ago.
well, i guess i don't mind especially if i get what i want.
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Originally Posted by Irocss85
patrick thinks that cam will clear? I'd be curious to see the clearance #s when you check. post them up for those heads/what gasket/and that cam.
chris
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Originally Posted by Irocss85
how much is what you gotta find out by measuring. then rechecking once your cut is done.
I think you can reuse cometics, they say you can. I have never done it though.
yes new head bolts if you have GM head bolts and all the fluids again.
I think you can reuse cometics, they say you can. I have never done it though.
yes new head bolts if you have GM head bolts and all the fluids again.
is there a "standard" amount to cut so you can have a good start, as opposed to cut a little, then check however one checks, then cut,....makes sense?
as i write this, i am convincing myself of this.
like you said, after all this time and money...
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ok, it's happening!
flycutting, milling heads to 60cc to increase my SCR to 11.63 or so, going with the 236/240 cam.
i would like to keep the stock gears. can i get away with it? or will i need to change them?
will i loose a lot in the lower rpms? or just a little.
thanks,
flycutting, milling heads to 60cc to increase my SCR to 11.63 or so, going with the 236/240 cam.
i would like to keep the stock gears. can i get away with it? or will i need to change them?
will i loose a lot in the lower rpms? or just a little.
thanks,
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thanks, Iroc!
i know i did a whole lot of research for the HT, and felt initially i was really pushing the envelope by going with it...though am very happy with it, i want more.
i know i did a whole lot of research for the HT, and felt initially i was really pushing the envelope by going with it...though am very happy with it, i want more.
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well, i got to cam in today after its delivery was "rescheduled".
installed it, and put some things together. then, decided to check PTV.
also, i took the heads to the shop to get milled at angle, so they are now 59cc.
i am not 100% sure, but-
exh. ~.160"
int. ~. 50"
i am tired now, but will check it all over again tomorrow.
i am hoping my measurements on the intake are wrong, but, don't think so.
will have to flycut just the intake.
i turned the engine a handful of times, it seemed fine.
Iroc - your thoughts?
installed it, and put some things together. then, decided to check PTV.
also, i took the heads to the shop to get milled at angle, so they are now 59cc.
i am not 100% sure, but-
exh. ~.160"
int. ~. 50"
i am tired now, but will check it all over again tomorrow.
i am hoping my measurements on the intake are wrong, but, don't think so.
will have to flycut just the intake.
i turned the engine a handful of times, it seemed fine.
Iroc - your thoughts?
Last edited by jegten; 09-13-2007 at 06:06 PM.
#19
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yep, if that is accurate, def. have to cut the intake. you did the dial indicator method as described right? and you tested in multiple places right? as in, 10btdc, 7btdc, 4btdc, 2btdc, 2atdc, 5atdc, I think the one I did had the tightest place at 2 or 4 after top dead center. but every cam will be a bit different. so need to test.
oh, and the exh. looks too much clearance to be accurate. I could be wrong, but check it again at multipule places jut to be sure. if you dont have a dial indicator (thought you said earlier you do?) you can just mark the damper, make a pointer to to mark, and start turning little bit at a time, then test, turn, test, turn test turn test......... all the way around
oh, and the exh. looks too much clearance to be accurate. I could be wrong, but check it again at multipule places jut to be sure. if you dont have a dial indicator (thought you said earlier you do?) you can just mark the damper, make a pointer to to mark, and start turning little bit at a time, then test, turn, test, turn test turn test......... all the way around
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thanks, iroc,
i did not really do that many places. actually, i was not able to find the instructions to use the dial indicator. and yes, i do have one.
yeah, i did think that exh. was a little too much, but, it is more than .120".
thanks for the instructions with the damper. i understand. but...the "test" part of it, not quite.
i did not really do that many places. actually, i was not able to find the instructions to use the dial indicator. and yes, i do have one.
yeah, i did think that exh. was a little too much, but, it is more than .120".
thanks for the instructions with the damper. i understand. but...the "test" part of it, not quite.