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View Full Version : 63=64 and Head question

LGAFF
03-01-2008, 01:21 PM
I was dissapointed when I tried match my plenum to the TB, I have a 63MM DRM TB, and noticed that they did not port match the intake, it was 60MM. So I opened up the intake to 63MM. Dominic came over today so before he got here I matched up TB to the intake and there was still a difference. After remeasuring the intake, I measured the TB again....difference is the TB is actually 64MM.


Also Dominic and I noticed that the head surface at the IH was machined right at the lip, just slightly. Is this from the factory, I would assume so.

LGAFF
92 ZR1
#234
Jeffvette
03-01-2008, 04:48 PM
Also Dominic and I noticed that the head surface at the IH was machined right at the lip, just slightly. Is this from the factory, I would assume so.

LGAFF
92 ZR1
#234

They are slightly machine to eliminate any excess overlap creaed from bolting down the next piece. Same thing with the top of the injector housings, they are machined some.
Pete
03-02-2008, 12:28 AM
They are slightly machine to eliminate any excess overlap creaed from bolting down the next piece. Same thing with the top of the injector housings, they are machined some.


:iamwithst

Jeff,did you get my picture e-mails

Pete
Jeffvette
03-02-2008, 01:15 AM
:iamwithst

Jeff,did you get my picture e-mails

Pete

Yes I did Pete. Been shopping the items around.
XfireZ51
03-02-2008, 09:43 AM
I happened to bring my 63mm TB to Lee's place and it also measured 64mm. Hopefully, 2 more plenum runners and the TB opening finishes off my manifold/IH porting project. Next, its the cylinder head match.
LGAFF
03-02-2008, 11:57 AM
Quote:
Originally Posted by Pete
:iamwithst

Jeff,did you get my picture e-mails

Pete


Yes I did Pete. Been shopping the items around.


Jeff and Pete would you like to share with the rest of the class? With these two minds, sounds like something is brewing!

LGAFF
Pete
03-02-2008, 01:42 PM
Quote:
Originally Posted by Pete
:iamwithst

Jeff,did you get my picture e-mails

Pete


Yes I did Pete. Been shopping the items around.


Jeff and Pete would you like to share with the rest of the class? With these two minds, sounds like something is brewing!

LGAFF


We're working on the 454ci LT5 project.:thumbsup:

Pete
bradslt5
03-02-2008, 01:58 PM
wow , good luck you 2 .petes great head developement and jeffs expertise on the lt-5 sure to be a winner . i can smell the rubber burning now