Stock 305 buildups?

I was wondering if you people thought that it was a good Idea to build up the stock 305 in my monte carlo? I want a daily driver that gets half decent mileage, will take most stock 5.0's and GSR's. I need ideas because the summers coming up and I need to decide what I'm gonna do. any ideas would be huge.

- Port the heads
- Intake
- Carb
- Cam
- Headers
- Free Flow Exhaust


About all I can think of that will help the 305. If I'm not mistaken you have a '80 Monte Carlo? Those years made no power, I've got a '83 Malibu w/a 305 and it makes about 140hp.

You'll need extensive work to the motor to keep up with 5.0's and GSR's. And at that point it wont be economical. The 305 wasn't designed with performance in mind, unlike the Ford 5.0.

If you want speed and economy, go for the 350. For $2000 you can get a GM Warranteed 350 4-bolt main with enough mods to make near 280hp/330tq.

Thanks man I was just wondering if it would worthwhile before I went on the long search for a good 350. The only good one I've found for a reasonable price is about 8 hours away

Yeah, if you don't already have a 305, don't bother with one. A 350 will give you much better performance, and it will probably even be cheaper.

Originally posted by RedNeck383
- Port the heads
- Intake
- Carb
- Cam
- Headers
- Free Flow Exhaust


About all I can think of that will help the 305. If I'm not mistaken you have a '80 Monte Carlo? Those years made no power, I've got a '83 Malibu w/a 305 and it makes about 140hp.

You'll need extensive work to the motor to keep up with 5.0's and GSR's. And at that point it wont be economical. The 305 wasn't designed with performance in mind, unlike the Ford 5.0.

If you want speed and economy, go for the 350. For $2000 you can get a GM Warranteed 350 4-bolt main with enough mods to make near 280hp/330tq.

Nicely put.....but now I don't have anything to say:eek:

The only other sugestion is to get some 305 torquer heads. They have a 170 cc intake runner and a 1.94 in intake valve, wich is quite big for a 305.

Actually, the 302 ford wasnt permormance oriented either. Sure they have the short stroke , but the heads make really good anchors and door stops. You put performance heads on either engine they will run.

Actually, I was thinking about the Torquer II heads myself maybe 20 minutes after I posted my post.... but got distracted and forgot to edit. Oh well, yeah the Torquer II heads would help out the 305.


Well the Ford 302 in comparison to the Chevy 305, stock for stock... the Ford 302 is a much better motor... True, in the later years the 305 got better but I Fords got the 5 liter motors covered.

You are the man.

Originally posted by MetalGod
You are the man.


Only sometimes... :)

You really should try porting your intake base at the heads side about 2 inches in. this will siamese the whole manifold, thus double the airflow. Use a large cam around 226 or bigger on duration and around .470 + lift with a 106 deg lobe sep. Now you must use a tight lobe sep for everything to work right. not the wide pattern normally found in fi and stuff. So far i have had really good luck with the siamesing. Everyone that i ever mentioned this to said the car would NOT start. When i got the car together today, the car started on the first piston that fired. If , if i lose some bottom end, i will stall it hence i was going to put a 3000 rpm in it anyway.lol. What good is 25 more ft lbs of torque if a forth gen camaro ss is going to wipe ur @$$ at the other end. I will test the trap speed again and see if i had gained any.

..... thats not a bad idea at all....


good thinking!


you get my seal of approval for fresh thinking.... and .. that is....


ummm


THIS! > :alien2: <



Seriously, i never thought of porting the intake manifold to match...

Dude please wait untill i check my trap speed first. I dont know if i lost power yet. all i need is a belt now. I will test it. i port them in a completely different place than ur speed shops do. Guess im not afraid to try something. thanks , i want to be creative. i will let you know how it runs. Is ur car tpi?

... you talking about my Nova? :confused:


I wish it was fuel injected... but thats way out of my budget...

All i've got is a nice Carb up top to dump plenty of fuel.

You will need air with that fuel. No this will not work on carb cars.

Originally posted by MetalGod
You will need air with that fuel. No this will not work on carb cars.



... Yeah, i've got the air part covered... Nice intake, Heads and a big Cam....



What wont work on carb. cars? Porting the intake/heads?

Originally posted by MetalGod
You really should try porting your intake base at the heads side about 2 inches in. this will siamese the whole manifold, thus double the airflow. Use a large cam around 226 or bigger on duration and around .470 + lift with a 106 deg lobe sep. Now you must use a tight lobe sep for everything to work right. not the wide pattern normally found in fi and stuff. So far i have had really good luck with the siamesing. Everyone that i ever mentioned this to said the car would NOT start. When i got the car together today, the car started on the first piston that fired. If , if i lose some bottom end, i will stall it hence i was going to put a 3000 rpm in it anyway.lol. What good is 25 more ft lbs of torque if a forth gen camaro ss is going to wipe ur @$$ at the other end. I will test the trap speed again and see if i had gained any.


WOAH...A degree lsa!???:confused: That's pretty extreme, don't you think? I am running a 110 right now and my car lopes A LOT. Idle is pretty damn rough on my 110. I used to run a 114 on my first hydro cam, and then a 112 on my second. Moved down to the 110 only when I put in the solid. I would also think that a 106 would have problems starting and staying alive...Got any sound clips? I bet it sounds like a top fuel:D

The Ford 302 heads are not great but better than Chevy 305 heads. Thing that seperates the 2 blocks the most is Ford's use of a roller cam with a much better profile than any Gm cam through the 80's and reduced friction. While GM stayed with a flat tappet cam until the LT-1.

I think you should just go 350 shopping unless you got a real hard-on for the 305 though

aH, Gm's had roller since 1987. My 87 Iroc has a roller cam.

I ran a crane 100082 cam in my 305 formula and all the mods were a 1989 corvette chip. The specs were 226 @ .050,.470 lift and 106 lobe sep andground 5 degees advanced. Yes it idled like a stock car @ 500. very rough. around 6 inches of vacuum. it did run a bit better. i still have the cam. i am going to put it in my iroc