Stock 302 Numbers
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Junior User
Joined: May 2003
Posts: 67
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From: Raeford, NC
Stock 302 Numbers
Correct me if I am wrong but a stock 2BBL 302, 1984, is only putting out about 140HP right. Does anyone know what I will get if I replace the stock intake and carb with a Edelbrock performer dual plane intake and Holley 4150 4BBL??
Elder User
Joined: Mar 2006
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would think you would see some nice gains honestly, we have changed several vehicles over from a stock carb and intake to a 4 barrel and edelbrock intake and they where all very pleased. Some even already had a 4 barrel and still said it was a noticable difference.
Senior User
Joined: Jan 2003
Posts: 387
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From: Calgary
My '72 302 is rated at 133 hp. Things that I have done to it to improve performance are;
-Put in a Summit cam with 204º/.448" intake, 214º/.472" exhaust. This still gives a smooth idle but the increased lift made a noticable difference in low and midrange torque.
-Installed long tube headers and 2 1/4" exhaust with turbo mufflers. Made a little increase in torque and power. Louder
-Pertronix point replacer and high output coil. Little increase in power...starts and runs better.
-Edelbrock performer intake and 1406 carb. Not much increase in power but starts and runs way better. Look nicer.
Overall it feels pretty strong. Would anyone know what this combination should put out.
-Put in a Summit cam with 204º/.448" intake, 214º/.472" exhaust. This still gives a smooth idle but the increased lift made a noticable difference in low and midrange torque.
-Installed long tube headers and 2 1/4" exhaust with turbo mufflers. Made a little increase in torque and power. Louder
-Pertronix point replacer and high output coil. Little increase in power...starts and runs better.
-Edelbrock performer intake and 1406 carb. Not much increase in power but starts and runs way better. Look nicer.
Overall it feels pretty strong. Would anyone know what this combination should put out.
Super Moderator
Joined: Apr 2004
Posts: 34,493
Likes: 2,809
What about compression ratio? Some of these motors had 8.somethings. How about 9.5 to start? 10.25 is a nice number.
Compare your setup to a mid '80s 4bbl Mustang GT motor. 200 or so HP, not sure if they got to 225 until they went to EFI.
Compare your setup to a mid '80s 4bbl Mustang GT motor. 200 or so HP, not sure if they got to 225 until they went to EFI.
