WS6Formula305

how much of a net gain would i see from the world 305 heads and a nice cam? i mean seat of the pants style i'm not sure what my car runs as i have no money and i'm trying to figure what to save for...

i have an article from popular hot rodding in... december of 2000. the article is called "Making Power With A 305" and they do a head & cam swap to a 305 with a STOCK TPI setup. not ported, stock throttle body. they use the world heads and something from Comp Cams... they don't give the specs or part number. they also don't mention any prices. anybody know anything in that aspect?

ok, this got a little long, but basically... would this be worth it, and how fast would i be on the street? i want a nice daily driver (she already is) that can outrun most of the cars i come across. i'm not lookin to run with an LS1 yet, but i would like to keep the 305 for bragging rights

comments? thanks for any help!

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'88 WS6 Formula - Stock LB9

WS6Formula305

these are the dyno results. i thought it might interest some of you other 305 guys. both runs are done with the 305 after a Federal Mogul rebuild with a Comp Cams roller setup, block bored .030" over, 9:1 compression ratio. article doesn't indicate what year TPI setup they're using, but they do state an MAP sensor was used as opposed to MAF. dyno runs :


Stock : (Head casting 14014416)

RPM HP TQ
3000 140.6 246.1
3100 148.7 251.9
3200 157.3 258.1
3300 165.7 263.7
3400 173.1 267.4
3500 179 268.6
3600 186.1 271.5
3700 192.4 273.1
3800 198.4 274.3
3900 202.1 272.2
4000 206.2 270.7
4100 209.6 268.5
4200 211.9 264.9
4300 213.2 260.4
4400 214.7 256.3
4500 215.4 251.4
4600 215.3 245.9
4700 213.2 238.2
4800 209.9 229.7
4900 204.9 219.7
5000 201.8 212
Average 193.3 255.5

World Heads :

RPM HP TQ
3000 178 311.6
3100 189.2 320.6
3200 198.9 326.5
3300 207.9 330.8
3400 215.6 333
3500 221.7 332.7
3600 229.9 335.3
3700 237.3 336.8
3800 242.5 335.2
3900 249 335.3
4000 253.7 333.2
4100 257.5 329.8
4200 260.3 325.5
4300 261.3 319.2
4400 262.5 313.3
4500 264 308.1
4600 263.5 300.9
4700 263.6 294.6
4800 264.1 289
4900 265.7 284.8
5000 266.3 279.9
Average 240.6 317.9




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'88 WS6 Formula - Stock LB9

The ODB

Your stock camshaft is already very good. You can save a ton of money by porting your stock 416 heads, getting a 3-angle valvejob, getting screw-in studs & guideplates, higher ratio roller rockers, and hardened pushrods. Dumping tons of money into heads & cam can only be justified after you have a very efficient exhaust system. Normally you should put work into the exhaust first (headers, Y-pipe, cat-back, cutout)

ODB

WS6Formula305

thanks for the tips. any good exhaust recommendations? i'd like to get something that idles fairly quietly, for sort of the "sleeper" mentality. i love waxing the local ricers =P

i'm looking for a nice, quiet idle... not wake the dead when i start up. i'd also like it to be nice & throaty (deep rumbling like the big blocks of yore) when i get on it... can i get both in the same system? recommnedations? thanks a bunch.

btw, a set of headers wouldn't fall apart in the humid florida summers, would they? i don't remeber what the conditions were, but i've read about leaky headers from something or other... i don't have the money to patch it up every few months (or every year for that matter). and no, i'm not very car tech literate yet =) thanks for the help.

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'88 WS6 Formula - Stock LB9

98_1LE

If you car is an automatic you will see as much or more improvement from a torque converter and sticky tires (I love Nitto 555R drag radials) than any other mod. I have a TCI Breakaway stall converter. It drives like stock around town. It foot stalls to 1800 rpm on the brakes. The car hooks and leaves HARD off the line. This was worth .3 seconds ET and complete consistancy for less money than the heads! My basically Formula is quicker to the 330' mark than my LS1 Z28 is and is ahead by nearly a car at the 60' mark! With heads/cam/headers I expect to run low 13's in the 'Bird. For the exhaust I would suggest the SLP 1.75" headers, a carsounds high flow 3" cat, and the SLP 2OTL exhaust first. It's all stainless so it won't ever rust, and it will sound very close to what you described. Add the heads/cam later and you will really see a huge improvement.

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87 Formula 350 13.94@96.67
98 Z28 1LE 13.15@107.59
1LE Owners Association

The ODB

Stainless headers like the SLP's are good quality and will not rust away like mild steel.
For the stealth approach just run your stock CAT-back exhaust & stock muffler. You can get the sound and power by using an electric exhaust cutout controlled by you in the drivers seat.

91banditt2

iTrader: (1)

i read some where on the net that someone put WORLD PRODUCTS 305 s/r's on a stock 305 TPI and gained a good 28 horse(dyno tested)just by putting on those head.i bought a pair for around $700.28 horse for $700 i think that's pretty cheap.

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http:/discussion-board.com/GreaterCincinnatiFBodyAssociation 1991 banditt2 firebird #130of#600

WS6Formula305

what's an electric exhaust cut out? i suppose adding that as opposed to buying a new exhaust still limits my flow (even with the headers)?

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'88 WS6 Formula - Stock LB9

The ODB

A cutout works great with headers & Y-pipe. Go here for a picture.

www.mccordcg.com/car_stuff/cutout_pic1.jpg

WS6Formula305

what's it do though?

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'88 WS6 Formula - Stock LB9

The ODB

well this is the coolest part.

you can run large tube headers, large Y-pipe, and large pipe back to the axle, then still run your nice quiet stock muffler & tailpipes... for stealth and drivability (torque).

The cutout goes after the axle and before your muffler. You can turn the **** from the drivers seat and instantly be running a basically open exhaust.
You can also put it on an RPM-switch control so that you can launch corked-up (through the muffler), and then open the cutout at a certain time to produce the best E.T.'s

the cutout vents your exhaust pressure to the atmosphere before the muffler can cause a pressure build-up.

The electric control means you don't have to crawl under the car to uncork, or drive by the police uncorked. You do it on the fly.

WS6Formula305

interesting. so do you see the breathing and power improvements only if the cutout is open, or does it still breath better regardless (just even better with the cutout open)?

and if i ran the suggested exhaust parts (without the cutout) would i still see improvements in power? or would the stock muffler still be an impediment even with the headers, Y-pipe & cat? heh, so many questions.

LASTLY! (i think, no gurantees ) after these breathing mods are done, would benefits be seen from the World S/R Torquers and a healthier cam matched to the rest of the setup?

and this is a suspension question but sort of applies here to. A) what kind of benefits would i see from a set of Spohn SFC's, and B) would they fit with these exhaust parts? i need to know what to save for

thanks! you guys are being really helpful.

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'88 WS6 Formula - Stock LB9

The ODB