302 Build
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302 Build
I am in the process of building a 302 for my pickup and was wondering what kind of hp/tq I could hope to make with my combination of parts. It started as a stock 1980 2 barrel and is receiving the following upgrades:
•Edelbrock 1405 600 cfm carb
•Flowtech long tube headers
•Edelbrock performer dual plane intake
•Rebuilt GT40 P heads
•Edelbrock performer plus cam with .270/.280 duration and .448/.472 lift, 112 lsa
Bottom end is completely stock.
EDIT!: Tore the motor apart today to begin building it and the bottom end is not stock, it has performance flat top pistons and forged rods.
•Edelbrock 1405 600 cfm carb
•Flowtech long tube headers
•Edelbrock performer dual plane intake
•Rebuilt GT40 P heads
•Edelbrock performer plus cam with .270/.280 duration and .448/.472 lift, 112 lsa
Bottom end is completely stock.
EDIT!: Tore the motor apart today to begin building it and the bottom end is not stock, it has performance flat top pistons and forged rods.
Last edited by Marshall1324; Apr 27, 2021 at 10:58 PM.
Logistics Pro
Joined: Aug 2014
Posts: 3,556
Likes: 850
For a truck, I wouldn't go with the GT40-P heads, because they are better flow for higher RPM HP.
Get heads that will match your cam, that will give you best torque for your truck.
Also, you may have issues with GT40-P heads due to spark plug angle and headers not fitting them, as they are different than GT40 and other stock heads.
Depending on your budget, either get aftermarket aluminum, or port yourself E7s.
Get heads that will match your cam, that will give you best torque for your truck.
Also, you may have issues with GT40-P heads due to spark plug angle and headers not fitting them, as they are different than GT40 and other stock heads.
Depending on your budget, either get aftermarket aluminum, or port yourself E7s.
Thread Starter
|
New User
Joined: Apr 2021
Posts: 3
Likes: 0
For a truck, I wouldn't go with the GT40-P heads, because they are better flow for higher RPM HP.
Get heads that will match your cam, that will give you best torque for your truck.
Also, you may have issues with GT40-P heads due to spark plug angle and headers not fitting them, as they are different than GT40 and other stock heads.
Depending on your budget, either get aftermarket aluminum, or port yourself E7s.
Get heads that will match your cam, that will give you best torque for your truck.
Also, you may have issues with GT40-P heads due to spark plug angle and headers not fitting them, as they are different than GT40 and other stock heads.
Depending on your budget, either get aftermarket aluminum, or port yourself E7s.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
And double the chances of blown head gaskets and broken crank too. The 1980-85 302's had the lightest blocks and weakest cranks of al of them. Thin decks made for poor head sealing issues. And the early 50 oz/in cranks ? I've seen two that broke in half in stock applications.
Cargo Master
Joined: Oct 2020
Posts: 2,657
Likes: 776
And double the chances of blown head gaskets and broken crank too. The 1980-85 302's had the lightest blocks and weakest cranks of al of them. Thin decks made for poor head sealing issues. And the early 50 oz/in cranks ? I've seen two that broke in half in stock applications.
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