NASCAR Tri-Y dimensions

[hoffman900]

Can anyone share?

Looking for primary diameter / lengths (and steps), secondary lengths / diameters (some seem to step or taper?), choke, and collector size. Typical port length would be helpful too.

I can see some of them from eBay postings, but missing a few critical dimensions.

Thanks

[maxracesoftware]

Can anyone share?

Looking for primary diameter / lengths (and steps), secondary lengths / diameters (some seem to step or taper?), choke, and collector size. Typical port length would be helpful too.

I can see some of them from eBay postings, but missing a few critical dimensions.

Thanks

i got these various Specs off eBay a long time ago ,
placed them into PipeMax v4.70 installation-included simulation File named :
NASCAR_year_2014_2015_2016_new_Specs_SBC358_9000RPM_880HP_540TQ_SolidRollerCam.PMW

Nascar lightweight stainless exhaust headers for the Ford engine with D3 cylinder heads
from top Nascar team.
These are Tri-Y headers with 1.850" tubes off the head then step up to 2"
and step to into the Tri-Y with 2.250"
Tri-Y pipes and 3 1/2" merge collectors.
In great condition, a couple very minor dings, and only weigh 20lbs.
Primary 1 7/8" - 2 1/8" Try-Y 2 1/8" x 2 3/8" x 2 5/8"' Collector 2 5/8"x 2 3/4" x 3 1/2"
________________________________________________________________________

SB2 ProFab Stainless Headers
Primary 1 7/8" - 2"
Tri-Y 2" x 2 1/4"
Collector 2 1/4"x 2 3/4" x 3 1/2"

Toyota TRD ProFab Inconel Headers
Primary 1 7/8" - 2 1/8"
Tri-Y 2 1/8" x 2 3/8" x 2 1/2"'
Collector 2 1/2"x 2 3/4" x 3 1/2"

Chevy R07 FWRC Inconel Headers
Primary 1 7/8" - 2.00"
Try-Y 2.00" x 2 1/4"
Ext. 2 1/4 x 2 3/8"
Collector 2 1/2"x 3.00" x 3 1/2"
________________________________________________________________________


NASCAR ELSTON STAINLESS STEEL TRI-Y EXHAUST HEADERS W/ COLLECTORS 1.875"-2"-2.125" HEADER SET.
THESE HEADERS ARE 1.875" PRIMARY TUBES STEPPED TO 2.00" THEN STEPPED TO 2.125" INTO THE "Y" PIPES,
2.500" AT THE REAR OF THE "Y" PIPES WITH EXTENSION TUBES ALL LEADING TO A 3.500" OUTLET
THRU A TRI-Y COLLECTOR


NASCAR PRO-FAB STAINLESS STEEL TRI-Y EXHAUST HEADERS W/ COLLECTORS 1.875"-2.000"
THESE HEADERS ARE 1.875" PRIMARY TUBES STEPPED TO 2.00" INTO THE "Y" PIPES,
2.375" AT THE REAR OF THE "Y" PIPES ALL LEADING TO A 3.500" OUTLET

[hoffman900]

Thanks, Larry. That helps a lot. Just need some lengths too.