Okay what should i use

1. LT1 cam OR ZZ4 cam


2.Holley 305 tbi or holley 350 TBI


3.Vortech supercharger for TPI going to use an adapter to use the tbi OR Pro charger also use a adapter to use the tpi supercharger on my tbi.

4.Exhaust syatem ??????????


5.Gears???????


All this i going to be done to my 305 it has 114,567 mile but im going to rebuild the engine in my auto class.

so anyother stuff needed.

 

sorry, but there is no way a 305 will ever beat an LS1. not gonna happen. and if it was somehow possible, the money would not be jsutified. a 350 is more reasonable, but still some money will have to be put into it. hard enough getting 13s on a 305, while LS1s were getting low 13s - high 12s off the showroom....

 

It can be done. The easiest way is to get nitrous, but thats up to you. It will be very hard without some sort of power adder.

 

Id say with a lt1 cam, 3.73 gears, posi, edelbrock TBI intake, sticky tires on the back, possibly a set of heads (sr torque or lb9 ported and polished), some suspension work, and a 100 shot of nitrous and youd probably have it.

I would rebuild the 305 if your gonna pull the motor it would be easier to put a new 350 in.

 

so i think im going to buy a 350 TPI so which cam would be better the ZZ4 or the LT1 cam/

 

Buy the LT4 Hot-Cam Kit your car will run fast then.

 

Nitrous. And lots of it.

 

yup i second the Nitrous and it has to be a fairly stock Ls1 ur gona be running aganist

 

you will prolly have to use a power adder

 

my point was NA, it would be very expensive and unreasonable to do it. yes, nitrous, turbo, or a supercharger would do it. but that engine would need to be in very good shape to runa 100 shot of nitrous or have a power-adder.

 

That cam is really alot of $$$$$$$$$$$$$$$ so its the best of the ZZ4 and the LT1 stock cam

 

ALSO DO I HAVE TO LIFT THE ENGINE TO PUT A CAM IN MY 305 TBI.OR CAN THE ENGINE STAY BOLTED TO THE CAR.

 

The LT4 hot cam would be too big for a street driven 305 imo, but some have done it. The ZZ4 cam is a nice cam, cheap and a good performer, but it will require a lot of tuning to get it to run right. For a 350 though the hot cam is a good choice, I would go with something else, but it is a widely used cam. Be prepared for tuning either way.

Yes, you can change cams with the engine in the car, but if you have access to a cherry picker I would pull the engine. It is so much easier to work on, and pulling the engine is not as bad as it sounds if you are already doing a cam swap.

 

yes the engine can stay in the car but you gotta take the radiator out and the A/C condensor

good luck in your attempt to beat an LS1 im having a hard time as it is try to get into the 14s

 

SO what cam should i use i have great low end power but when right when the car shifts in to 3rd gear i feel like a snail.

 

Yes the cam can be changed with the engine in the car. The LT4 hotcam is WAY too big for the stock heads or any street/daily driven 305.

I agree that you're pretty much not going to beat a LS1 in a full weight street 305 N/A. You would NEED GOOD HEADS and a lot of traction.


A mild 305 with nitrous (100+ hp) and traction could easily hang with close to stock LS1's with street tires at the track.

I doubt even nitrous would help top end vs an LS1(bolt on and stock LS1s trap 104-110+ mph)

 

You'd have a lot better luck doing a bunch of weight reduction as well.. I was surprised how heavy they are.. even with the aluminum block/heads. My friends LS1 Ram-Air Trans Am WS6 weighed in at about 3600 with a 1/4 tank. You know.. you could also just buy a LS1. I have seen some for sale for about $3000... I think that included tranny also. Probably what you'd end up spending to get a 305 to beat one of them.

 

I really hate to burst your bubble, but your car (compared to a LS1 and some built 350s out there) is a snail in all gears. Changing that will be a very expensive task. If your engine has a lot of miles, then trying to get 315+ RWHP out of it is not smart. You can just throw a cam in there, but IMHO if you are serious about it just save for a bigger, better engine.

 

Yep im just going to save my money for a 350 TPI engine and by parts for that engine when i get it so what would the ZZ4 cam work for the 350 tpi.

 

Why not just keep saving and buy a good crate engine. If your looking for the easiest swap and tunability then plan on a crate engine and switch to carburation over FI. IMHO. Depending on how much you can save or plan to spend and how much you know about rebuilding engines will determine which direction you will ultimately go. But an HT383 with a LT4 hot cam sounds like a winning combo to me.

Steve

 

COuldnt i just get the 305 block bored or what to make it a 350.

 

No. The 305 block has a 3.75" bore and to bore it out to the required 4.00" bore would leave the cyclinder walls too thin to be execptable. No machine shop in their right mind would do this because they could not stand behind their work. 350 blocks are a dine a dozen, so just find a good one preferably out of a running or late model car. Then you can rebuild it at your leasure.

Steve

 

what would be easier to put in and whats the difference i keep hearing the tpi systems called speed density and some other name?????

 

To be honest and I'm not sure how much mechanical experience you've had, I would save for the 350 and just use your TBI w/ mods and go w/ the police car chip.

I'm going to go with a carb probably because the engine i'm putting in is pretty wild as far as cam duration and I don't want to spend the time chip tuning. Eventually want to switch to stealth ram tpi setup...

Speed density was a tpi setup used from (correct me) around 90 to 92'. It basically just didnt' use a maf sensor. It used primarily the map. Whereas tpi setups before that used a maf and map sensor.

I think w/ the 350/LT1 cam/police car chip you'd be more than happy w/ the dramatic power increase you would have. (in hp and low end torque) Then you could spend some money making it all work like a posi/gears/suspension mods.

But for brute all out cheap power if you wanna go wild and quick I would go carb as I am...