[1Gary]

So your machinist has been in the game for what,30 yrs??.

Do you seriously think these guy in terms of engine building,it is their first rodeo??

How about guys on here that are machinists??. What,do just discount or ignore their advise because they are providing on this forum??.

Me??. Well let's see.I started messing with cars when I was 10 and I am 65 now........hummm how many yrs is that??.We have in our race operation been in business for about 40 yrs and 20 of it has been a very successful national win in 9.90 cars where last count/lost count involved 17 different cars.

So what I am about to say next is abit harsh but very true.Your running between us and your machinist and it's you that doesn't have clue that needs to listen to the advise given and learn.Big boy pants now if you own any........

[cdminter59]

I read the ad from the kit you bought on Ebay from Skip White. It does say it will have 10.3 compression ratio with 64cc heads. But to assemble the motor with the recommended amount of quench .035-.045 you would need to use a .015 head gasket. Nobody makes a .015 with a 4.165 bore for the 400 ci engine. The next available size is a .027 x 4.165 made by Cometic. With this gasket your quench will be .052 not ideal but will work. Your STATIC COMPRESSION RATIO will be 10.304 and your DYNAMIC EFFECTIVE COMPRESSION RATIO will be 9.051. This is too high to use pump gas. To use pump gas you need the DCR from 7.5-8.5. Here is an article that discusses Dynamic Compression Ratio. Dynamic CR

[lhmurphy]

Originally Posted by cdminter59

I read the ad from the kit you bought on Ebay from Skip White. It does say it will have 10.3 compression ratio with 64cc heads. But to assemble the motor with the recommended amount of quench .035-.045 you would need to use a .015 head gasket. Nobody makes a .015 with a 4.165 bore for the 400 ci engine. The next available size is a .027 x 4.165 made by Cometic. With this gasket your quench will be .052 not ideal but will work. Your STATIC COMPRESSION RATIO will be 10.304 and your DYNAMIC EFFECTIVE COMPRESSION RATIO will be 9.051. This is too high to use pump gas. To use pump gas you need the DCR from 7.5-8.5. Here is an article that discusses Dynamic Compression Ratio. Dynamic CR

All kinds of people use the .015 gasket and trust me, it will run on 93 octane...believe all the articles you want, I'm going to put my money with my guy who doesn't have time for forums bc he is busy building engines...good day

[lhmurphy]

Originally Posted by 1Gary

So your machinist has been in the game for what,30 yrs??.

Do you seriously think these guy in terms of engine building,it is their first rodeo??

How about guys on here that are machinists??. What,do just discount or ignore their advise because they are providing on this forum??.

Me??. Well let's see.I started messing with cars when I was 10 and I am 65 now........hummm how many yrs is that??.We have in our race operation been in business for about 40 yrs and 20 of it has been a very successful national win in 9.90 cars where last count/lost count involved 17 different cars.

So what I am about to say next is abit harsh but very true.Your running between us and your machinist and it's you that doesn't have clue that needs to listen to the advise given and learn.Big boy pants now if you own any........

Well Congrats on your wins and I'm done with this thread

[farmwalker]

I think you bought stuff and asked for opinions after the fact; then got mad because someone you know built something similar and it worked. But the fact of the matter is, you don't know it will work till you do it yourself. When you get this thing accually running then you can let us know if we know what we are talking about. But then, I guess we would have to take your word for it that you didn't change anything (heads, pistons etc.). Cuase, you've never fibbed to us before... Post #57

[lhmurphy]

I never fibbed...the motor I talked about earlier was a friends 350

[lhmurphy]

Originally Posted by 1Gary

So your machinist has been in the game for what,30 yrs??.

Do you seriously think these guy in terms of engine building,it is their first rodeo??

How about guys on here that are machinists??. What,do just discount or ignore their advise because they are providing on this forum??.

Me??. Well let's see.I started messing with cars when I was 10 and I am 65 now........hummm how many yrs is that??.We have in our race operation been in business for about 40 yrs and 20 of it has been a very successful national win in 9.90 cars where last count/lost count involved 17 different cars.

So what I am about to say next is abit harsh but very true.Your running between us and your machinist and it's you that doesn't have clue that needs to listen to the advise given and learn.Big boy pants now if you own any........

It's advice not advise and have a nice day

[farmwalker]

See this proves you don't know for sure what you are talking about, because all you can argue for sure on is spelling of advice not advise and argueing over the fact that you asked for opinions not help.

This is what you posted.

And also mister this motor has been running pretty good for the last 3 years and I never hear any pinging...I just posted so I could see how accurate these forums are and if I would really wanna join...so that's why I posted this to see how many people would chime in about compression and say it wouldn't run 15 minutes or idle smooth...looks like my test is done

So you said it was "this motor." Not "my friends motor."

But in post #66 You said, "I never fibbed...the motor I talked about earlier was a friends 350 "

[cdminter59]

When you finish your engine and get it running let us know what octane gas you end up using. By chance if it does have any problems with detonation take a look at Crowers mechanical roller cams. Find one with the intake valve closing at 50* this will bring your DCR down to an 8.2. Get a real cam instead of that thumpr that is all sound and show and no go. Check out this cam since you have the compression to use it. http://www.crower.com/camshafts/chev...-cam-277r.html

[lhmurphy]

Originally Posted by cdminter59

When you finish your engine and get it running let us know what octane gas you end up using. By chance if it does have any problems with detonation take a look at Crowers mechanical roller cams. Find one with the intake valve closing at 50* this will bring your DCR down to an 8.2. Get a real cam instead of that thumpr that is all sound and show and no go. Check out this cam since you have the compression to use it. Camshafts | Connecting Rods | Roller Lifters | Rockers | Crankshafts | Pushrods | Clutches

I appreciate it man...and the thumper cam outdid 4 popular flat rapper cams made by comp if you can find the article but I wil look into your cam some

[lhmurphy]

Originally Posted by farmwalker

See this proves you don't know for sure what you are talking about, because all you can argue for sure on is spelling of advice not advise and argueing over the fact that you asked for opinions not help.

This is what you posted.

And also mister this motor has been running pretty good for the last 3 years and I never hear any pinging...I just posted so I could see how accurate these forums are and if I would really wanna join...so that's why I posted this to see how many people would chime in about compression and say it wouldn't run 15 minutes or idle smooth...looks like my test is done

So you said it was "this motor." Not "my friends motor."

But in post #66 You said, "I never fibbed...the motor I talked about earlier was a friends 350 "

Bc I didn't, my friends 350 runs great and I clarified that...you don't know what you are talking about, you would if you could understand that my compression will run on pump gas..."this" motor referred to my friends...

[farmwalker]

What do you mean you didn't. Those were direct quotes from your posts. I just coppied and pasted them to show you that did say it was your mortor not your friends.

So why did you join this forum?? To get opinions of your build? Or to prove that we don't know what we are talking about?

[lhmurphy]

Also earlier a guy said my compression would be 10.6:1 which was clarified to be false...that's why I'm doubting some people's opinions

[lhmurphy]

Originally Posted by farmwalker

What do you mean you didn't. Those were direct quotes from your posts. I just coppied and pasted them to show you that did say it was your mortor not your friends.

So why did you join this forum?? To get opinions of your build? Or to prove that we don't know what we are talking about?

To find someone who would give me te correct numbers thus proving they know what they are talking about

[farmwalker]

To find someone who will give you the correct numbers... Or just the numbers you are looking for??