Thread: My first build

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Originally Posted by green machine

i am currently driving a 1993 gmc sierra 1500 regular cab long box 2 wheel drive with a 305 CI in it. I have recentley bought a 350 CI TBI used. It would be nice if it was sitting at about 400 hp, how can i get it there? what pistons would you go with? what camshaft ratio? should i get new heads or machine the old ones? How do i go about building a 400hp motor?

This will be an exercise in futility that will leave you broke with a bad attitude. Curb weight of your truck is 4001 lbs. Figuring you and a buddy weigh 350 together, that puts the weight of the truck at 4,351 lbs. By the time you spend money on engine, converter, trans and rear end upgrades, you're gonna be very upset when some Ricky Racer in an 1800 cc Honda with a $500 boneyard turbo setup hands you your azz on a plate.

Begin with a lighter vehicle, like maybe an S10/S15. My son drove a '72 Chevy Luv truck with a bone-stock (no headers either) 455 Olds/TH400 in it when he was in high school. It went low 13's with a stock converter through a narrowed Olds rear w/3.90 gears hung on leaf springs.

Your reference to "camshaft ratio" tells me that you know little about building any kind of motor, so you will need to upgrade your education before you begin adding soup to anything. Begin with some books by David Vizard.