lower intake pro quo...

mustangmadman · 08-24-2003, 12:34 PM

anyone know the lower intake porthole dimensions for a stock intake?????

can they be ported to a bigger size?

tmoss · 08-25-2003, 07:37 AM

Yes, and properly done you get 15+HP - paste the link in my signature for more information. Here's the numbers...........

Stock upper intake runner size = 1.588 sqin.
(2-9/16" half circles, or 1 1/8" dia + .5"x1.185" rectangle)

Stock Lower intake opening @ head = .875" x 1.675" = 1.46 sqin.
Stock E7 Head intake runner = 1.05" x 1.90" = 1.995 sqin

Stock Lower intake port @ head = .875" x 1.675" = 1.46 sq in
Stock Lower Ported = 1.12" x 1.75" = 1.96 sqin
1.96/1.46 = 1.34 or a 34% increase in flow area.

mustangmadman · 08-25-2003, 09:49 AM

thanks for the response, i feel loved being in a group with such smart people

08-24-2003, 12:34 PM	#1
mustangmadman Registered Member Join Date: Aug 2003 Location: rochester, ny Posts: 31	lower intake pro quo... anyone know the lower intake porthole dimensions for a stock intake????? can they be ported to a bigger size?

08-25-2003, 07:37 AM	#2
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	Yes, and properly done you get 15+HP - paste the link in my signature for more information. Here's the numbers........... Stock upper intake runner size = 1.588 sqin. (2-9/16" half circles, or 1 1/8" dia + .5"x1.185" rectangle) Stock Lower intake opening @ head = .875" x 1.675" = 1.46 sqin. Stock E7 Head intake runner = 1.05" x 1.90" = 1.995 sqin Stock Lower intake port @ head = .875" x 1.675" = 1.46 sq in Stock Lower Ported = 1.12" x 1.75" = 1.96 sqin 1.96/1.46 = 1.34 or a 34% increase in flow area. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

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08-25-2003, 09:49 AM	#3
mustangmadman Registered Member Join Date: Aug 2003 Location: rochester, ny Posts: 31	thanks for the response, i feel loved being in a group with such smart people