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Big Bore GT Block Finally Here!

#1 User is offline   srk1959 

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Posted 18 November 2009 - 03:21 PM

Thanks to Dan Schoneck I have upgraded to a Darton big bore block. I guess 358 cid with stock stroke is the common displacement. Now I just need more $$$$.

When I bought my GT500's I was going to leave them stock but when Ford decided to build 20K plus of them I figured I might as well have some fun!

So technically this is Ford's fault then. :hysterical:

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This post has been edited by srk1959: 19 November 2009 - 02:46 PM

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#2 User is offline   JimC 

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Posted 18 November 2009 - 03:25 PM

View Postsrk1959, on Nov 18 2009, 03:21 PM, said:

Thanks to Dan Schoneck I have upgraded to a Dart Engineering big bore block. I guess 358 cid with stock stroke is the common displacement. Now I just need more $$$$.

When I bought my GT500's I was going to leave them stock but when Ford decided to build 20K plus of them I figured I might as well have some fun!

So technically this is Ford's fault then. :hysterical:

:happy feet: :happy feet:
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#3 User is offline   VNMOUS1 

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Posted 18 November 2009 - 03:32 PM

View Postsrk1959, on Nov 18 2009, 05:21 PM, said:

Thanks to Dan Schoneck I have upgraded to a Dart Engineering big bore block. I guess 358 cid with stock stroke is the common displacement. Now I just need more $$$$.

When I bought my GT500's I was going to leave them stock but when Ford decided to build 20K plus of them I figured I might as well have some fun!

So technically this is Ford's fault then. :hysterical:




Niiiiiize.


bj
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#4 User is offline   samg 

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Posted 18 November 2009 - 03:38 PM

View Postsrk1959, on Nov 18 2009, 06:21 PM, said:

Thanks to Dan Schoneck I have upgraded to a Dart Engineering big bore block. I guess 358 cid with stock stroke is the common displacement. Now I just need more $$$$.

When I bought my GT500's I was going to leave them stock but when Ford decided to build 20K plus of them I figured I might as well have some fun!

So technically this is Ford's fault then. :hysterical:


Sweet mother in heaven -- you have to go all the way with it now....
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#5 User is offline   srk1959 

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Posted 18 November 2009 - 03:47 PM

View PostVNMOUS1, on Nov 18 2009, 05:32 PM, said:

Niiiiiize.


bj



Thanks BJ !

I have one on order for you too! JK! :hysterical:

You and your car are too fast the way it is! :D
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#6 User is offline   srk1959 

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Posted 18 November 2009 - 03:50 PM

View Postsamg, on Nov 18 2009, 05:38 PM, said:

Sweet mother in heaven -- you have to go all the way with it now....



It's starting to look like I might have to!

We will see, it is getting pointless trying to keep it how it is. I think there is a cage and harness in my future.
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#7 User is online   68fastback 

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Posted 18 November 2009 - 06:13 PM

Wow! Steve, that's one sweet beefy block ...awesome!!

Are those siamesed sleeves? ...or a one piece core of some kind? ??
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#8 User is offline   BlackVert 

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Posted 18 November 2009 - 07:31 PM

Congrats! Can't wait to see how this one turns out!
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#9 User is offline   500 SNKE 

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Posted 18 November 2009 - 08:28 PM

View Postsrk1959, on Nov 18 2009, 03:21 PM, said:

Thanks to Dan Schoneck I have upgraded to a Dart Engineering big bore block. I guess 358 cid with stock stroke is the common displacement. Now I just need more $$$$.

When I bought my GT500's I was going to leave them stock but when Ford decided to build 20K plus of them I figured I might as well have some fun!

So technically this is Ford's fault then. :hysterical:


:rockon: :rockon:
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#10 User is offline   csx2396 

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Posted 19 November 2009 - 09:23 AM

View Post500 SNKE, on Nov 18 2009, 11:28 PM, said:

:rockon: :rockon:

Does anyone know what headgaskets they are using and if there our any problems between cylinder walls because of thinness
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#11 User is offline   BEEKAY GT500 

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Posted 19 November 2009 - 09:43 AM

View Postsrk1959, on Nov 18 2009, 03:21 PM, said:

Thanks to Dan Schoneck I have upgraded to a Dart Engineering big bore block. I guess 358 cid with stock stroke is the common displacement. Now I just need more $$$$.

When I bought my GT500's I was going to leave them stock but when Ford decided to build 20K plus of them I figured I might as well have some fun!

So technically this is Ford's fault then. :hysterical:


i better not follow this thread... :cry:
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#12 User is offline   HARLEYDEALER 

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Posted 19 November 2009 - 09:46 AM

View Postcsx2396, on Nov 19 2009, 12:23 PM, said:

Does anyone know what headgaskets they are using and if there our any problems between cylinder walls because of thinness

Think I'll be sitting this one out for a while, looks thin to me also, really thin and what bout the heads, I would like to see larger combustion chambers with larger valves, then we would be talking. I had larger exhaust valves installed in mine but 1 mm was the largest Fox Lake could go, due to no room. Bill

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#13 User is offline   esc 

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Posted 19 November 2009 - 01:02 PM

"So technically this is Ford's fault then. hysterical.gif "



We can rationalize almost anything if we dwell on it long enough. So far, I have rationalized about 15k in additional parts for my GT500. And I know, compared to many others, this is a drop in the bucket! :huh:
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#14 User is offline   srk1959 

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Posted 19 November 2009 - 01:47 PM

View Post68fastback, on Nov 18 2009, 08:13 PM, said:

Wow! Steve, that's one sweet beefy block ...awesome!!

Are those siamesed sleeves? ...or a one piece core of some kind? ??


I honestly didn't even really get a chance to check it out that good. My Service writer has been off and the block came in towards the end of yesterday. I am working the service desk right now, tomorrow I will have more time and will post up some of the details.
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#15 User is offline   dans776 

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Posted 19 November 2009 - 02:18 PM

Thanks Steve
Also the sleeve conversion is done by darton, You were close Steve:) The bore is now going to be 3.70 versuse 3.552, So realistically you are only losing .148 thou difference inbetween the cylinders. I know of a couple mod motors using the boss mod blocks with 3.7 bore running 88mm turbos at over 30lbs of boost with no issues. We are going todo a couple other things also to aid in head gasket seal. Cometic makes a specific gasket for these sleeves. Also as far as the cylinder heads go, there is really no mods that need to be done to the combustion chamber when going to these sleeves and also the gt heads flow good enough they dont need larger valves and no one makes a exhaust valve with the same back cut as stock so when you switch the exhaust valves to aftermarket valves they actually flow less with a bigger valve. Just making the bore bigger helps the heads out tremendously.
Also even on a 800hp motor the extra cubes will be worth 65hp. Its not cheap but when is hp at this level.

Dan

P.s Steve did you post a pic of the Billet crank yet?:)
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#16 User is offline   JimC 

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Posted 19 November 2009 - 02:20 PM

View Postesc, on Nov 19 2009, 01:02 PM, said:

"So technically this is Ford's fault then. hysterical.gif "



We can rationalize almost anything if we dwell on it long enough. So far, I have rationalized about 15k in additional parts for my GT500. And I know, compared to many others, this is a drop in the bucket! :huh:


Depends on haw many part you will /can/ want to use from your current engine.
If you are going all new 15K will get you started but plan on dropping a some where close to 25 to 30k+ any labor or shop time.

They’re not cheep; but you will have a far better engine they what you started with.
You will learn the old saying is so very true
"If you want to play, you gots to pay".
Pay till it hurts :banghead: :cry:
Then go have fun! :hysterical:
What the heck you only live once. :happy feet:
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#17 User is offline   srk1959 

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Posted 19 November 2009 - 02:44 PM

View Postdans776, on Nov 19 2009, 04:18 PM, said:

Thanks Steve
Also the sleeve conversion is done by darton, You were close Steve:) The bore is now going to be 3.70 versuse 3.552, So realistically you are only losing .148 thou difference inbetween the cylinders. I know of a couple mod motors using the boss mod blocks with 3.7 bore running 88mm turbos at over 30lbs of boost with no issues. We are going todo a couple other things also to aid in head gasket seal. Cometic makes a specific gasket for these sleeves. Also as far as the cylinder heads go, there is really no mods that need to be done to the combustion chamber when going to these sleeves and also the gt heads flow good enough they dont need larger valves and no one makes a exhaust valve with the same back cut as stock so when you switch the exhaust valves to aftermarket valves they actually flow less with a bigger valve. Just making the bore bigger helps the heads out tremendously.
Also even on a 800hp motor the extra cubes will be worth 65hp. Its not cheap but when is hp at this level.

Dan

P.s Steve did you post a pic of the Billet crank yet?:)



Thanks Dan for clearing up the Dart vs Darton....oops! Shows you how new I am to this block! I will post up some pic's of the crank tomorrow and like I said in my previous post I might actually get more than a couple of minutes to look it over!

I modified the original post so I don't confuse any more people than I probably have!

This post has been edited by srk1959: 19 November 2009 - 02:47 PM

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#18 User is offline   HARLEYDEALER 

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Posted 19 November 2009 - 03:20 PM

"Also as far as the cylinder heads go, there is really no mods that need to be done to the combustion chamber when going to these sleeves and also the gt heads flow good enough they dont need larger valves and no one makes a exhaust valve with the same back cut as stock so when you switch the exhaust valves to aftermarket valves they actually flow less with a bigger valve."
Dan, I believe you have something on you lips, OH it's B.S.! Were did you ever come up with the flow charts supporting what you said, again B.S. Show me the charts and we will talk! Bill
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#19 User is offline   srk1959 

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Posted 20 November 2009 - 01:26 PM

Well I was doing a search on Darton Sleeves. Seems they are pretty popular and have done Ford GT blocks. Here is a link to a short article I found. I just keep learning new stuff since I got my GT500's.

http://www.theddddir...ase.php?item=63
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#20 User is offline   sbornitz 

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Posted 20 November 2009 - 06:12 PM

Can't wait to make a trip down to Milwaukee. Hopefully we can catch up before next spring.
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