Dart 205 dyno numbers are in!!!
I dont want, nor mean to steal this thread, but I purchased Stage II Darts (which I was told was a 62cc) along with the G5X3 cam. And well, I was told to use .030" (to get 11.1 CR) gasket and flycut. But, if he can use unmilled Darts with that cam and stock gaskets to get 11.1 (which is where I would like to be) then shouldnt I just get stock gaskets as well? From my numbers, I get 11.65.1. CR.. WTF
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From: Was New Orleans, but swam to Baton Rouge
Originally Posted by waterbug1999
Not unless I missed it, but did you have to notch the pistons?
No notching here just bolted them on. Now the F15 cam has around .599 lift on each side. I think the Gx3 has around .610 or more which could be the difference and with a thinner gasket it would be close.
TECH Fanatic
Joined: Aug 2005
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From: Sunny London, UK
Just a FYI on this. I received my Dart 205's today and the stock GM 5.7L MLS gasket fits the chamber size exactly. I recall seeing that the chamber was larger on an earlier post. Perhaps dart has fixed this. These heads were shipped 24th March from summit after being on back order, so are probably part of the latest batch.
Finish is good, some casting flash here and there, nothing major.
I think Ill just bung them on and see what happens. Looks like around 11:1 on standard engine.
Finish is good, some casting flash here and there, nothing major.
I think Ill just bung them on and see what happens. Looks like around 11:1 on standard engine.
I am just curious, can you measure the chamber width? Mine came out at around 3.96", slightly large than the stock bore. I just went with the 6.0 GM MLS gaskets as the stock was slightly smaller than the chamber if I remember correctly. Patriot distributes this gasket with their heads as well.
When are you installing? With luck, mine will be on this weekend and I should have pushrods by middle of next week. And the weather is getting better after tomorrow as well.
When are you installing? With luck, mine will be on this weekend and I should have pushrods by middle of next week. And the weather is getting better after tomorrow as well.
Lift has little to do with it, its duration and valve events that matter. But my guess would be you would have to notch the pistons on a x3 with thinner gaskets.
Originally Posted by Sigforty
No notching here just bolted them on. Now the F15 cam has around .599 lift on each side. I think the Gx3 has around .610 or more which could be the difference and with a thinner gasket it would be close.
Installing Dart 225's this weekend with G5X3 on 114, as per Dart, GM head gasket #12498544.
I'm going to check valve clearance to see if i can mill. also told me to use Autolite 3934 Plugs,i'm going to cross ref. this to an NGK.
John
I'm going to check valve clearance to see if i can mill. also told me to use Autolite 3934 Plugs,i'm going to cross ref. this to an NGK.
John
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Verdad Gallardo TECH Fanatic
Joined: Aug 2005
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From: Sunny London, UK
Interesting the box says 62cc. If they are 64cc then thats fine. As for chamber width they are just under 4" so likely to be the same size as before then. I must admit I wasnt looking with a micrometer, just lined up the gasket on the head and it felt to the touch bang on.
Mine wont be on till later in the month.
Mine wont be on till later in the month.
The reason that I did was the Darts I have measured 3.96 on the chamber, the stock 5.7 gaskets measure 3.93 so I would have gasket hanging into the chamber. Now the gaskets are back from the bore taper at the top. Not sure which situation is better.
On The Tree
Joined: Sep 2005
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From: Detroit - suburbs
Sigforty - How's your doing? Any new et's? I spoke to Terry at Futral yesterday and your car came up in conversation - that promted me to ask you.
Vettenuts - Is your stuff together yet? I am feeling challenged as the king of procrastination. LOL
Vettenuts - Is your stuff together yet? I am feeling challenged as the king of procrastination. LOL
Thread Starter
11 Second Club
Joined: Jun 2005
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From: Was New Orleans, but swam to Baton Rouge
No new times yet!! I am waiting to get some time to hit the track. As far as driving everyday the car is getting alot better gas mileage on interstate. I was doing 29 to 30 while travelling at 75 mph.
Originally Posted by Malihoochie
Sigforty - How's your doing? Any new et's? I spoke to Terry at Futral yesterday and your car came up in conversation - that promted me to ask you.
Vettenuts - Is your stuff together yet? I am feeling challenged as the king of procrastination. LOL
Vettenuts - Is your stuff together yet? I am feeling challenged as the king of procrastination. LOL
Originally Posted by 1LOUD98
No he is right Terry,the other guy working there!Whats up with you Mike(this is Telly)
