I plan on swapping to torquer SR 305 heads, edelbrock intake, and a bigger cam should i keep TBI or get a street avenger or regular holley carb? ive heard people say they never got the TBI running right after major mods...what do you all think?

 

Well, if you get either of those carbs, you'll eleminate your computer and thus need a vacuum advance distributor.

 

i know ill need a new intake, distributer, AFPR and some minor fuel lines mods...

 

Stay with TBI, and learn to burn chips. Most likely that is what I am going to be doing with my new setup. I will post my results with using the stock chip on a heavily modified 305 TBI in a few weeks. I am just hoping that the car will be drivable until I get good at burning chips.

 

Got emissions? Gotta stay EFI.

I think if I had TBI, I'd learn to burn chips...much less mess/hassle than dialing in a carb, IMO.

BWAAHAAHAAA, looks like I'm promoting TBI.

No vote, not necessay.

You mean you'd actually do what the majority says? I say we all do a write in for a Paxton...hahahahahahah spend your money.

 

CARB 100%....

Stock TBI's dont make power IMO.....burning chips for those things is annoying & useless.....you want power, go carb or go at least to a TPI....

But your best bet is carb.....get rid of that TBI

 

I always ask myself why so many EFI guys "carb it" to solve their problems. Keep the EFI. Gas mileage and any hope of passing emissions will go to hell with a carb. And its more expensive and more of a hassle to convert to carb than it would be to upgrade your existing TBI system (note, by this time your induction system will be able to support more horsepower then you'll ever have). Its another popular misconception that TBI is the big thing holding those cars back. Same goes for the guys with LG4/L69 engines who think the ccc q-jet is the problem. Whats holding you back is the *****y cam, the *****y heads, and that dinky exhaust system. I'd start their before i slap a carb on my motor......

 

I'm not gonna hand you an answer like the rest of these guys will. I'll just give you the methods to make your decision. So...

<confucious says>

Depends on what you're after (speed or drivability?), how you drive the car (transportation or fun?), and how much money you want to spend. You can't really expect good advice if no one knows these things. They're just gonna put down an opinion based on how they think everyone elses' car should be.

As much as the debates go on, the truth is, given the money and talent, anything is possible with any fuel delivery method. The point is, how much money and talent do you have? And the answer to that, in combination with your goals will tell you how to get there (which system to pick).

</confucious says>

 

^^^ You probably wont hear any better advice than this.

 

im not worried about passing emmissions...if i was i would still have air injection, smog pump, catalytic converter, smog legal headers and all that good stuff...im not rich at all im still in high school and work at BK but birthday and graduation are coming up very soon so ill have some decent money to play with...im thinking about staying TBI will save me some money plus i like the idea of being able to make WOT retard timing so if i even decide to try nitrous or something

what kind of times do you think i could possibly run with SR 305 heads, TBI edelbrock intake, lt1 cam and a good chip? oh yeah and everyones saying its cheaper to stay TBI...id have to buy 300$ worth the **** to burn my own chips so it wouldnt be much difference in price

 

305,

My vote in your poll went for staying with the TBI system. There are numerous reasons, most of which have already been covered here. The presumtion is that you expect to be able to drive the car regularly (daily).

And if you're thinking about the World Products S/R Torquer 305 heads, grab a Whopper (with cheese, of course), sit back, and do a little homework.

I just had my first really good look at these heads off an engine a short while back, and they are O.K., but nothing to spill your Coke over. The valve bowls are very restrictive, both in and out. The port ceilings could be raised more, and the short sides are very long and bulging. The valve guide bosses aren't even trimmed. The big plus on these heads is the larger (almost gasket-matched) port openings and screwed rocker studs. The runners are larger than stock '416 castings, but not by much at all.

Better yet, World's instructions are to install the heads with head gaskets for a 350 SBC, not a 305, apparently due to the slightly enlarged combustion chambers. I called them to find out why, and after talking to two engineers the best I could get was that they knew that the 305 Fel Pro gaskets didn't fit well. I asked about the later stock 305 GM head gaskets I had planned to use, noting that I had matched the gaskets to the deck and head (as I always do) and found no alignment nor interference issues. They stated that they didn'tknow about the stock GM part number I gave them, and said "Go ahead - they should be fine." We speculated that some of the late '70s and early '80s 305s with "smogger" heads had a smaller chamber opening for the really small valve sizes that came on some of those engines, thus the smaller Fel Pro gaskets.

I expect that THAT particular 305 now has higher compression than most others on the street using World heads.

Just thought you might be interested, if you decide to use the World heads. Personally, I'd get a used pair of '416 heads and have at them with a die grinder and valve grind (1.94"/1.50") with bowl work. Screwed studs are $15.00, springs are $60.00, and valves are $60.00. The rest can be free if you have the time and equipment.

There is a thread being posted regarding the flows of stock ported heads compared to aftermarkets, and you should be VERY interested in that: https://www.thirdgen.org/techbb2/sho...hreadid=101489

While this is for the L98 iron heads, the same conventions apply to the stock 305 "416" (LB9 & L69) heads. I would expect the results to be similar, too.

 

Vader I too had the same issue with the 305 head gasket. When I contact World the first time, they told me that it was fine and possibly a cooling issue. The second time I was told that it was just a slight decrease in airflow.

There is a notable difference between the Worlds and the 416s. I have pictures I took of 187s, 416s and the Worlds all side by side and port comparisons. I am very confident that these heads will outperform the 416s, even ported.

The best heads for the 305 still I think are the Vortecs. Once you sort out all the associated problems, they work just fine and make a 305 scream. The technology is there.

 

Carb all the way..........Turn a few screws and a entire jet pack are 39.00 you can take a 650 double pumper and tune it to about any situation in minutes. Thats what I did and I am glad I did it.



Brian

 

Hey fellas, i was thinking of running a TURBO!!!!!!!!

i think i have TBI, thats the thing with the holes right? I'm gonna put a turbo as big as my head (like that burroito place sept different) on it and go kill some butt!!!

 

wow i forgot how cool my sig was

 

worlds just seem alot easier to install and come ready to do...i dont know if i wanna get the vortecs milled or not im not even sure if i could find someplace to do it here...more input would be great