Ive got an 87 trans am 305 tpi with the ws6 package, Do you think ive got enough speed to keep up with some of todays sports cars? If so what do you think would me some good match ups for me.

 

What are you trying to "keep up with"? You need to explain more about your car to get any answers. What are you trying to do with the car? street race?

 

In stock trim your car may "feel" fast but would probably only run a 16 second 1/4 mile. Many newer cars can easily beat that.

 

In stock trim you have a car that was not bad for 1987, 20 years later there are allot of 6 cylinders that will match your 2 decade old performance, I hope this helps you see the obvious, but N2O is a cure all when used properly.

 

Im planning on throwing a couple mods on and give it some new gears and i want to be able to keep up with cars like civics and mid-level imports. I know that im wouldnt stand a chance against a car like a corvette but i want to have alot better acceleration and power, what are some decent priced mods that arent gonna hurt my gas milage cause i have to drive this car everyday. The more power the better.

 

Well there are an array of bolt ons, cold air, under drive pulleys, headers, catback exhaust, aftermarket intake, computer chip, and of course a cam is sometimes considered a "bolt on" and would increase engine output greatly dollar for dollar, and since you have a roller cam you do not really have to worry about failure after install like a flat tappet, be sure to not go over your valve springs capability and force them into coil bind. Heads are not bad to swap out if you have someone who has the experience to assist/do the install, all of these together would yield serious gains that would devastate allot of the cars you would line up with and still deliver a good daily driven characteristic.

 

Stock you will be toast compared to alot of stuff...
There are so many things to make it faster though...
What is mentioned above are all wonderful ideas.
Look in the regional adds to pick up some of the stuff used...to save your walet, thats what I do

 

Thanks alot. Do you think that if i was too do all of those things it would make a serious noticable change. And about the exhaust, do you think that i should get a true duel catback or just a single. Also i want the exhaust to be really deep and loud so whats the best brand to go with?

 

With all of those mods you will feel a seat of the pants difference. As far as exhaust goes a single three inch will be more than sufficient for your stock motor. I would not worry about true duals unless you just absolutely want them. Check the exhaust board there is a sticky near the top with a lot of different sound clips.

 

What does Seat of the pants mean?

 

how many miles are on ur car

 

130,000

 

Butt dyno.

 

Do you think that will give me enough to run with some of the newer mustangs and cammaros.

 

Do you have an auto or a stick? What is your rear gearing? And what is your budget?

With those mods (new cam included) you will be close. Maybe some cheap heads also. Like Vortecs, or S/R torquer heads.

 

Ive got an automatic trans and im ordering a new catback exhaust, headers, a cold air intake, and a performance chip. Thats all i can afford right now, it cost over 1500 and i only got like 350 left. I think im gonna go with either the flowmaster or borla for the exhaust, i know there both gonna only add about 10 to 15 horses so im basing it on the sound, i want deep and loud. How much horsepower do you think all of those mods will bring me up to, the car stock is like 220. Im not sure about the gears but they are probably stock. Im trying to get the car to have enough power to take on the newer model camaros and mustangs.

 

that car won't ever take on the newer LS1 camaros.

 

After all those mods you dont think that i could take on a mustang or even a new v6 camaro or firebird.

 

be careful, mine started it a similar spot.

 

no.I had a car just like that before i got my Iroc The stock 305 even with bot ons is just to slow and probably wont be better than about 250 hp.They came with only about 190 hp.You can beat a newer camaro v-6

 

Well is there any other types of affordable mods that will gt me to that level?

 

so your 305 engine will take on a LS1....please tell me how? Affordable and 305 TPI/auto combo and 330 rwhp(avg stock ls1) don't go in the same sentence.

 

Has anyone ever bought one of these?
http://kalecoauto.com/index.php?main...products_id=41

I'ld like to but 400$ is a bit much for me at the moment.

 

Not yet but I'm thinking of getting some cross drilled brake lines.

 

The 305 isnt that slow, i dont know why people think that, i know its not a beast stock but its a good platform engine that has some good torque power.

 

Why the hell not? Some stock, early 80’s 305 head castings with any decent valve job will flow enough, as will the stock TPI in take, for that matter, you only need about 160cfm/intake port/runner to make 330hp, and most of the good 305 heads flow 185 or more from the factory and the TPI intakes flow around 195-205. Add a decent flowing cold air intake, cam that has a HP peak between 5500-6000rpm with a fat midrange (like I’d look in the range of a Comp XE270HR-10), good headers and exhaust and proper tuning (probably easier to convert to a later speed density ecm then stay with an earlier 165, but people have made more power then that with a 165), and you should be making an honest 330-350hp.

Add to that that 3rd gens are enough lighter then 4th gens that on average you can probably run the same times with 25-35hp LESS in one… 350hp in a lightish 3rd gen (lets say 3500# race weight with driver) is enough to run 12.5’s @ 109.

There’s at least one or 2 people here running in the 12’s with basically low buck 305 combinations, but I don’t remember any of them doing it with a TPI… basically take one of those, duplicate it with a cam that plays nice (at least doesn’t fight the TPI setup) and you’re golden.

 

Heh, not that it’s the be all and end all of answers, but on a whim I just punched exactly that combination into desktop dyno… Assuming a stock short block, staying with 58cc heads (9.3:1 compression), using some large valve, _stock_ 416’s (they came with both 1.74 and 1.84 intake valves), stock TPI, headers and that comp cam I got a peak hp of 370@5500 and peak torque of 399@4000.

Throw this in front of a cheap 3600-4000rpm converter or a 5 speed, reasonable gearing, say 3.45-4.11 depending on tire size and transmission in any, even a heavyish 3rd gen and you have a deep 12 second car that can be driven daily.

 

your day dreaming if you can build a 305 with a stock tpi to run mid 12s. are we talking nitrous here? Normally I agree with your opinions, but 12.5 at 109, just isn't going to happen. I built a 3300 pound raceweight camaro with a 305, ported heads, big cam, single plane intake and 750 dp holley and ended up at 13.0 at 102 or 103. Now how are you getting the extra horsepower to push these cars another 6mph on motor, with the bottleneck that is a TPI ? I was shifting above 6k with 4.10s and 26" slicks as well as using a 3500 stall TH350. Spraying the car netted 11.60s as well. Just trying to not have this kid get his hopes up too high, most 350 TPI motors on this site haven't broken into the 12s.

 

Rather then debate numbers, plain and simple, I’ll used mw55nova as an example of a well thought out, low buck 305 (matt, I hope you don’t mind), his sig:

305 .030" over, Eagle cast crank, Ohio Crankshaft forged rods, 10.2:1, 113casting aluminum vette heads with WRC p&p work, Competition Cams 280H (230*/230* .480"/.480" 110lsa), Competition Cams 1.5 Pro-Magnum roller rockers, Holley street dominator p/n 300-36, WRC modded and tuned 650DP, Hedman lt's with dual h-piped 2.5" pipes, 10" ATI 4000 stall converter, built 700r4, 3.45 posi disc 9 bolt, street tires are Kuhmo 712's on 88 IROCS, race tires are M/T ET Street Radials 275/50/15 on 15x10 rodlites and 15x6's up front with a 205/70/15.
best times with 305:
R/T-.000
60'-1.678
1/8-7.79
1/4-12.31 @ 108.48

Now slap a TPI on that (the TPI flows more then his carb/intake setup) and you can probably expect to loose about 10hp and gain about 15lb/ft torque… add 2-300lbs to the car (he published his race weight at 3220lbs, a little lighter then most of us manage), you still have a car that will run 12.6@106. Change that cam to a 280HR (since the TPI cars will have a roller setup to start with, no use downgrading), and you’ve gotten back another 20-30hp and you’re back in the 12.3-12.4 range.

At that point the question isn’t if it’s possible, it’s do you have the tuning and driving skills to do it? Now going back to playing with numbers, I’m seeing a rather efficient/well matched bunch of parts that is loosing 10-15hp somewhere. Looking at the combination I’d bet that he could still find another 3-5hp in tuning/tweaking and then 5-10 in transmission/converter slip/lighter front tires/traction.

 

The stock tpi intake can, and has been done by several guys in the fuel injected stock classes, run well into the 11's. The intake and heads are more than capable of supporting 400 hp, whether you really want to go that far is up to you but the top end is plenty capable.

 

Well, I’d have to rephrase that…

The intake is definitely capable of flowing enough to feed 400hp in a perfect setup, the stock TPI heads are only good to about 350, again in a perfect setup, but there are stock 305 heads like the 416’s, 601’s that can actually slightly outflow the stock tpi.

At that point building a “stocker” type setup isn’t realistic for most people, but ringing out 350hp out of that is quite possible. Past that if you’re not rules constrained there are easier ways of getting the hp.

 

Im definetly not rules constrained