Head Gasket Questions..technical help please.
Thread Starter
Pro
Joined: Mar 2010
Posts: 701
Likes: 2
From: Lewisville TX
Head Gasket Questions..technical help please.
FYI BUILD INFO:
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Alright I have most of my 403 stroker build on the way but down to a few smaller but critical decisions.
I am shooting for about 11.5-11.6 static compression to reach just under 8.7 dynamic compression. From what i have gathered these numbers are safe to shoot for. I live in texas and 93 octage is readily available so that should help as well. I am in Dallas Texas with an elevation of 755ft as well, so that thins out the air just a hair, not exactly like Denver but not sea level either.
I have 65cc heads with 4.005" bore and 4.000" stroke. Intake valve closes at 73.5 (intake duration 234).
I am waiting to get the deck height of the pistons once the engine block is measured, so that will determine some things.
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Questions
How important is the bore of the head gasket compared to the bore of the cylinder and head. The stock LS2 Head gasket is .020 larger than the stock bore of 4.000"?
Also who makes the best head gasket for something like this. If the deck clearance is ZERO then i may have more options including stock but if it is at around .010 then i would be looking at a thinner aftermarket gasket, like Cometic?
What's the safest Dynamic compression ratio you can ran without worry.
____________________________
Alright I have most of my 403 stroker build on the way but down to a few smaller but critical decisions.
I am shooting for about 11.5-11.6 static compression to reach just under 8.7 dynamic compression. From what i have gathered these numbers are safe to shoot for. I live in texas and 93 octage is readily available so that should help as well. I am in Dallas Texas with an elevation of 755ft as well, so that thins out the air just a hair, not exactly like Denver but not sea level either.
I have 65cc heads with 4.005" bore and 4.000" stroke. Intake valve closes at 73.5 (intake duration 234).
I am waiting to get the deck height of the pistons once the engine block is measured, so that will determine some things.
_________________________
Questions
How important is the bore of the head gasket compared to the bore of the cylinder and head. The stock LS2 Head gasket is .020 larger than the stock bore of 4.000"?
Also who makes the best head gasket for something like this. If the deck clearance is ZERO then i may have more options including stock but if it is at around .010 then i would be looking at a thinner aftermarket gasket, like Cometic?
What's the safest Dynamic compression ratio you can ran without worry.
Safety Car
Joined: Jan 2004
Posts: 4,974
Likes: 14
From: Pinellas Park Fl
St. Jude Donor '08-'09 & '12, '14
Check out this page from Jegs
http://www.jegs.com/webapp/wcs/store...Term=245-C5751
Cometic can custom make a set
http://www.cometic.com/custom.aspx
Cometic Gasket, Inc.
8090 Auburn Road
Concord, OH 44077
(800) 752-9850 Call Toll Free
(440) 354-0777 Order / Tech Line
(440) 354-0350 Fax
http://www.jegs.com/webapp/wcs/store...Term=245-C5751
Cometic can custom make a set
http://www.cometic.com/custom.aspx
Cometic Gasket, Inc.
8090 Auburn Road
Concord, OH 44077
(800) 752-9850 Call Toll Free
(440) 354-0777 Order / Tech Line
(440) 354-0350 Fax
Thread Starter
Pro
Joined: Mar 2010
Posts: 701
Likes: 2
From: Lewisville TX
http://www.byunspeed.com/product_inf...oducts_id=6397
Thinking about this one actually should pretty much be the one i need to get my compression pretty close to 11.4 and dynamic would be 8.48. Might leave a little on the table but rather be safe I think than risk too much compression.
Thinking about this one actually should pretty much be the one i need to get my compression pretty close to 11.4 and dynamic would be 8.48. Might leave a little on the table but rather be safe I think than risk too much compression.
