Fly Weights

Bill Bogues · 11-28-2013, 07:14 PM

82 monte carlo 267 : 3170 in U/SA

goinbroke2 · 11-28-2013, 08:18 PM

Well, with a factor of 25.10! there's the 1960 falcon with a 144 6cyl at 2259#!

Can't see a 72 mustang getting this light, but a 250 6cyl is 2973# at 20.50. Of course it's rated at 145hp...and the 302 is 143 so why bother.

78 Fairmont 2.3, 22.69 at 2587#.

For 4 cyl's how about a 92 festiva at 1720#?

Pretty much all the fox platforms are around 2800-3100 with an 8 and so are the maveric/comets. The old falcons were around 2800 with v8's too.

House of Darts · 11-29-2013, 02:44 PM

To end the controversy the D4B is for the smaller bolt 273/4bbl motor. The LD4B is for the '66 273/4bbl that uses the modern LA motor heads. Both aluminum intakes have a CHRY part #. Must have the CHRY part # to be NHRA legal. The acceptance of the intakes was introduced by Chrysler/Mopar. What I don't understand from the info from NHRA is why they don't allow the LD4B on the '65 273/4bbl when you can use the swirl port 302 heads which are moderm LA design.

11-28-2013, 07:14 PM	#1
Bill Bogues Member Join Date: Apr 2005 Location: Bethany La. Posts: 323 Likes: 98 Liked 169 Times in 53 Posts	Re: Fly Weights 82 monte carlo 267 : 3170 in U/SA __________________ Bill Bogues 4696 STK

11-28-2013, 08:18 PM	#2
goinbroke2 Senior Member Join Date: Mar 2002 Location: NS CANADA Posts: 901 Likes: 1,700 Liked 404 Times in 158 Posts	Re: Fly Weights Well, with a factor of 25.10! there's the 1960 falcon with a 144 6cyl at 2259#! Can't see a 72 mustang getting this light, but a 250 6cyl is 2973# at 20.50. Of course it's rated at 145hp...and the 302 is 143 so why bother. 78 Fairmont 2.3, 22.69 at 2587#. For 4 cyl's how about a 92 festiva at 1720#? Pretty much all the fox platforms are around 2800-3100 with an 8 and so are the maveric/comets. The old falcons were around 2800 with v8's too.

11-29-2013, 02:44 PM	#3
House of Darts Member Join Date: Mar 2007 Posts: 346 Likes: 19 Liked 20 Times in 15 Posts	Re: Fly Weights To end the controversy the D4B is for the smaller bolt 273/4bbl motor. The LD4B is for the '66 273/4bbl that uses the modern LA motor heads. Both aluminum intakes have a CHRY part #. Must have the CHRY part # to be NHRA legal. The acceptance of the intakes was introduced by Chrysler/Mopar. What I don't understand from the info from NHRA is why they don't allow the LD4B on the '65 273/4bbl when you can use the swirl port 302 heads which are moderm LA design.