ok, my dad is giving me a set of 305 TPI heads, and gonna be soon doing a LT1 cam swap, will these heads help me any, and if so what kind of gains can i expect with the cam and heads, then in a couple of months headers. Thanks in advance,

Kevin

Oh and one other thing will these heads bolt up with no problem.

 

305 tpi heads will help you a little.. i asked this question awhile back and from the knowledge i got is that with a little exhaust side porting .. prob about 10 hp differance or so with just the heads. with the cam swap prob about a total of 30-40 estmiating. it also depends on what rockers you are using. if you went with roller tip ones like i did 1.52 or 1.6 you would get a tad more than that.

good luck..

 

i dont know if this matter or not, but the head casting number is 14101081, its a standard port head, what about these, now

 

081 is the most common 305 TPI head; after 87. They're a good basis for a higher horsepower motor over the stock 187s. Just port the intake runners a bit, improve the line of sight in the exhaust ports and put some higher lift springs for the new cam.

 

adn don't forget a good valve job. the guys in the fastest street car association have proven in teh cheap street class that a low lift(limited to .490 at teh valve) stock casting(not allowed to mess with the head casting at all) can benefit greatly from a good valve job.

later
tim

 

can i change the heads with the motor still inthe car or do i need to pull the motor

 

Hey it's me ive been gone for a while but im back now. Any way you can leave the moter in the car.

 

yes you can do a cam and heads swap with the motor still in the car.