i have a stock lt1 cam, what would it take to drop it in my 305 tbi engine, does it need to be modified? or will it slide right in?

 

as far as mods to the camshaft you will need to push the dowel pin in,the proper depth
best way to do it is to get a timing sprocket for your tbi engine place the gear on the cam
and tap the pin flush with the sprocket face with a small center punch and hammer.
other than that just reassemble,some say you need to retune the car but i did not and it ran fine a little hesitant off idle.if it is bad you can prolly buy a modded chip from someone on ThirdGen.Org
also check the play in your factory distributor if it moves up and down too much you should replace it!

 

alright thanks for your help. im wondering, at what point does my factory tbi become a bottleneck, it has a performer intake on it already but im wondering the capabilities of the tbi itself, does anyone know the cfm rating on it? are there any junkyard throttle bodies that will bolt up and flow some more? and how much hp do you think the stock one can support? im kinda new to the tbi's and since this is my winter beater car, i really dont want to spend much on it. if anyone could help out id appreciate it, thanks

 

There is a sticky post on the TBI forum over at thirdgen.org that walks you thru the LT1 cam upgrade process.

As far as HP, dont even bother trying to get any power out of it. Its a daily driver type of engine with decent TQ and gas mileage, but it was never meant to be a power producer.

Stock CFM for the two barrel TBI is about 450-500 cfm. There are 670 cfm upgrade throttle bodies, but you wont need them on a 305. The fuel becomes the issue first. Two injectors cant feed 8 cylinders as well as 8 injectors can.

Change the exhaust to a 3" cat back, and call it done.

 

thanks for the advise, well like i said, this is the "beater" car and to be honest i dont care all that much about it. is there a way to throw a little more fuel into it? im also thinking about doin a 100 or so shot on er'. ill check out thirdgen tho, thanks.

 

adjustable regulator
350 injectors
if you search over at Thirgen.Org you will find MANY,MANY posts and write ups.

 

yup i did this last night, third gen is definitly helpful.. thanks guys i appreciate it. i will get video of the beast up here sooner or later. i promse it will get a laugh out of you.