when is a head too big?
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I didn't say anything was junk. I am a big fan of aluminum heads. I was just saying most aftermarket aluminum castings are considerably stronger than OEM ones and anyone that got the money should spring for them, really it's a better investment if you got the cash.
--Alan
Hush up Alan, you hafta spend your money on a trans because those lame ported stockers of yours killed it!
AFRs may well be too much for a stock cube motor. Personally, I'd buy/build a killer short block first, either 355 or 383, and have a long lived core to put good stuff on later.
AFRs may well be too much for a stock cube motor. Personally, I'd buy/build a killer short block first, either 355 or 383, and have a long lived core to put good stuff on later.
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Thanks for the smart *** coment aba lol. I agree with you completely stock ported heads can kick some serious ***. But he says he has the cash to spend then he should do it cuz once you go fast your only going to continue to go faster. So why not have a cylinder head that is ready for it. I would agree a 355 or 383 would be a real good investment for a set of bigger afr's. But even the basic afr head is a cnc'd port and you can upgrade the the fully cnc'd ported head with a bowl finish. I would like to see any machinist try to port to the accuracy of a cnc machine it cant be done.
Thanks for the smart *** coment aba lol. I agree with you completely stock ported heads can kick some serious ***. But he says he has the cash to spend then he should do it cuz once you go fast your only going to continue to go faster. So why not have a cylinder head that is ready for it. I would agree a 355 or 383 would be a real good investment for a set of bigger afr's. But even the basic afr head is a cnc'd port and you can upgrade the the fully cnc'd ported head with a bowl finish. I would like to see any machinist try to port to the accuracy of a cnc machine it cant be done.
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I never said they werent. What im getting after is to just get a cylinder head right out of the box ready to rock. You wont need to do any crazy port work to make them work they are ready to be bolted on and ran. I dont if what your getting after is that LPE flow better than afr? So whats the flow numbers on an LPE factory head right out of the box.
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Verdad Gallardo I wouldn't doubt the LPE worked heads outflowing the out of the box AFRs. They are a very good head. I would like to see what they could do with some Brodix, AFR, or Dart heads.
I was being a wise *** in my post, but the problem with your thinking is that I've yet to see an aftermarket head give better results without a bunch of port work $$$$ done to them...For the majority of us a properly ported set of stockers will work fantastic...I still think that the LPEs are one of the best out there, and I've had mine for almost 13 years...If I had the money I'd rather spend it elsewhere where it would do more good...Just my .02...
--Alan
--Alan
Yea LPE does a nice job! Al the headporter at LPE reworked my heads. He told me the cnc program for the stock lt-1 head is over 15yrs old. It is amazing LPE had technology other shops are just now catching up to. AL hand ported my heads because he said that he could open them up more by hand than cnc. Also since the cnc program is outdated there are improvements that can be made. It does not warrant them to spend the money to keep on the cnc r&d for the LT-1. Especially with all of the LS-x stuff that keeps them busy. Although, the last time I spoke to Tom Cress he said they worked on 7 LT-1's the weeek prior!
--Alan
Hush up Alan, you hafta spend your money on a trans because those lame ported stockers of yours killed it!
AFRs may well be too much for a stock cube motor. Personally, I'd buy/build a killer short block first, either 355 or 383, and have a long lived core to put good stuff on later.
AFRs may well be too much for a stock cube motor. Personally, I'd buy/build a killer short block first, either 355 or 383, and have a long lived core to put good stuff on later.
I almost missed your post Paul
...Damn heads cost me a trans...
--Alan
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I dont know fergy. I couldnt find a flow sheet on the LPE site. He did have some generic specs but they werent much to get enough info from. I did check the AI site and they had some sheets but theyre 200cc head would be out flowed by AFR's 195's easily at less lift to. I do agree with aba though its amazing your 13 year old LPE's are still going strong and what you have run 11.2's is very respectable numbers. The LPE's sound like a good head
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Launching!
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From: New Ulm, MInnesota
Thanks for the smart *** coment aba lol. I agree with you completely stock ported heads can kick some serious ***. But he says he has the cash to spend then he should do it cuz once you go fast your only going to continue to go faster. So why not have a cylinder head that is ready for it. I would agree a 355 or 383 would be a real good investment for a set of bigger afr's. But even the basic afr head is a cnc'd port and you can upgrade the the fully cnc'd ported head with a bowl finish. I would like to see any machinist try to port to the accuracy of a cnc machine it cant be done.
I agree as well last year i put N20 to her, and with almost 400HP to the wheels, its still not enough
thanks everyone for all the feedback...keep it coming!
I dont know fergy. I couldnt find a flow sheet on the LPE site. He did have some generic specs but they werent much to get enough info from. I did check the AI site and they had some sheets but theyre 200cc head would be out flowed by AFR's 195's easily at less lift to. I do agree with aba though its amazing your 13 year old LPE's are still going strong and what you have run 11.2's is very respectable numbers. The LPE's sound like a good head
and most guys wont notice.Reader has to try and make sure he compares apples to apples and even then you need to understand there are many ways to fluff the numbers and many shops are willing to do just that. As has been stated too flow isn't everything, the only reason we talk about it is is is a cheap and easy test compared to the only real test which is the track.
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Most AFR fans will tell you their flow bench is "happy" to say the least particularly on their under 210cc heads. Also check bore sizing some aftermarket heads are published using a 4.155 bore(.030" over 400 smallblock) where shops like AI publish 4.030" bore numbers. One LT1 specialty shop even uses a 4.060" bore though that is not that common on street LT1s, good for numbers though and most guys wont notice.
Reader has to try and make sure he compares apples to apples and even then you need to understand there are many ways to fluff the numbers and many shops are willing to do just that. As has been stated too flow isn't everything, the only reason we talk about it is is is a cheap and easy test compared to the only real test which is the track.
and most guys wont notice.Reader has to try and make sure he compares apples to apples and even then you need to understand there are many ways to fluff the numbers and many shops are willing to do just that. As has been stated too flow isn't everything, the only reason we talk about it is is is a cheap and easy test compared to the only real test which is the track.
A head is too big when you cant find a hat or helmet to fit it!
An AFR 195 is not too big for a stock bottom end car as long as it is cammed correctly.And has all the supporting mods.
I have a 250CC head on a 383 that peaks at 6700 rpm. And makes pretty good power.
David
An AFR 195 is not too big for a stock bottom end car as long as it is cammed correctly.And has all the supporting mods.
I have a 250CC head on a 383 that peaks at 6700 rpm. And makes pretty good power.
David
