adriancws6

my plan is to add a air intake, then port my plenium,runner,manifold,and throttle, am also thinking of adding a cam while am at it but it dont know which one to go with i want a mild cam or stage one i dont want it to big, i found some on ebay but dont know if there good for me engine which is mostly stock and i heard lunati is a good brand also!! help please and thanks


specs of the lunati cam

APPLICATION CAMSHAFTS

VALVE SETTING

RPM
OPERATING
RANGE

CAMSHAFT PART NUMBER

CAM GRIND NUMBER

DURATION

VALVE LIFT @ 1.5:1

LOBE SEP. ANGLE

ADV.

@ .050”

IN. EX. IN. EX. IN. EX. IN. EX.
HYDRAULIC FLAT TAPPET: Mild rough idle. Great for street machines/muscle car. Largest cam for stock torque converter, best with 2000+ stall.

Hyd

Hyd

2000-6000

10002

NA

272

280

224

234

.465

.488

112/107°

adriancws6

and gonna run some long tube headers

91greenbird

iTrader: (4)

if you car is the original 87 motor it should have a roller cam and that cam wont work. If you have the peanut cam id swap in the lt1 cam. If your car has the l98 cam i would look into a crane 2032.

adriancws6

oh ok thanks i was told not to go with a LT cam cuz theres not much difference, i want my car to be a lil louder and also get a good gain of hp? but ill check out the crane cams thanks

David 91RS/Z28

What headers and exhaust will you be running? I ran a Comp 210/220 .480/.480 112LS cam back in my 305 days and had great success. I'd suggest the exhaust upgrades and a 3.73 gear as well!

adriancws6

am planning on running longtube hedman street hedders and right now i have no muffler it ends at the cat, i cut it off when i replaced the fuel pump cuz the pipe was rusted and no good, but i think am going to go with a SLP loud mouth.. i heard the 3.73"s are no bueno for the 5spd 9bolt, cuz my tpi will run out of power at high rpms?

adriancws6

have u guys heard about this cam? Crane Compu cam 2010<---

camarofvr

F-Body's love 3.73's. It'll make a night and day difference in performance.

ninetyone

iTrader: (2)

342 should be max, i almost had no 1st gear with my 342's. F-body's do better with 342

adriancws6

yea thats what i heard that 3.42s are big enough cuz 3.73"s u wont have no first i like my stock gears cuz even on take off my car has to many torque i want a smooth launch with alot of mid range and top end power

David 91RS/Z28

Definitely not true! 3.73's are perfect choice for most manual street/strip TPI applications! I first installed the 3.73 gears with posi back in my 305 TBI days and knocked off a half second in the 1/4 mile. That first time I went to the track blew me away how much of a difference it made. I thought it was a little bit steep at first but you get used it in no time. Once I switched over to TPI, added a lil cam to the 305 and few other small things, the 3.73's were a perfect choice....And still today with my current setup 355 setup! Remember, you want to be at the top of the gear when going thru the 1/4 as you want to maximize the use of the engine power. Good luck!

adriancws6

ok ill guess ill try that out, do u have any used cams forsale am looking for a 2032 crown cam? am running a 305 tpi 5spd?

adriancws6

and do u rember ur 1/4 time with ur tpi 3.73"s setup?

ninetyone

iTrader: (2)

Might not be that bad with a manual trans tho

ninetyone

iTrader: (2)

I'm telling you, when I had 342's on my bolt on 350 TPI , first gear sucked. I can't imagine how a 373 would be. I was also running bigger tires too

ninetyone

iTrader: (2)

The questions should be, Where are your rpm's at with the 373's when on the highway and how did you like it? and how bad was your gas mileage

David 91RS/Z28

305, self ported stock TPI, headers, exhaust, the cam I listed above, stock Vette aluminum heads, 3.73 gears... 13.65 at just over 101mph on motor. 12.81 at 109 on a 75 shot.

adriancws6

thanks and am thinking of doing some porting my self to get some more air flowing in the top end!! and nice times

David 91RS/Z28

.

If I recall the rpms increased 4-500 rpms at 70mph vs the stock 3.08gear. I chose to hop the car up for performance not mileage. More extensive mods to a car will decrease mileage some. Cam, heads, intake, gears.... it will all effect mileage. Overall with my current setup I still managed 22mpg on a cruise from Baton Rouge to Memphis once for a race. Ran my best times of 11.6's and drove back. The thing with the lower gear is you will be able start off in 2nd from a stop easy just like before in 1st. You can skip gears and use 5th more in town without the lagging. You have to use the gear to your advantage when driving it so mileage isn't effected much at all.

David 91RS/Z28

Was this with an Auto or Manual that you had? For an auto TPI car yes, a 3.42 might be a better choice. Especially with a looser torque converter. But later on with a higher rpm range more gear will be required for optimum performance.

ninetyone

iTrader: (2)

With a 3.42 gear and my 700r4 and bolt on mods , I averaged a little less than 12mpg around town.

ninetyone

iTrader: (2)

A 373 may work ok, if you have a manual. Probably worked ok for you cause you were not using the stock tpi setup. Which likes to make it's power lower in the powerband.

fireturd350

iTrader: (8)

I don't know if you've decided on the camshaft yet or not, but www.camquest.com is a decent little site. That's Comp Cams online engine dyno and camshaft selection tool. It would probably give you some ideas of what you want for a camshaft size. It's pretty detailed too for a free tool. You can adjust head characteristics, intake, valve sizes, exhaust, and etc.

My stock 350 TPI with bolt ons nothing internally done would get 17/18 MPG with 700-R4 and 3.27 gear with a 2400 RPM 9.5" lockup converter. I also agree 3.73s might be a little steep depending on your setup. Also remember gear swaps can get expensive between the labor, gear sets, install kits, and etc. You could easily get $400-$600 wrapped up in it. If you have a 9 bolt you will have a hard time finding anything other than the normal 3.27s or a 3.70 noisy gear in the US to swap too, unless you order from AUS.

David 91RS/Z28

And with a manual and 3.73 the mileage would be better! Auto's suck for in town mileage.

David 91RS/Z28

I would still use a 3.73 gear with a manual trans behind a long tube runner setup any day. Who ever plans on keeping their TPI stock though? Everyone is always looking to increase the rpms and power.

adriancws6

thanks i will be checking that out

adriancws6

yea am not trying to run a all raced out motor, just a lil tweak to hit the races up and also cause i rather swap in a ls2 then spend alot of money on a tpi that is hard to reach more then 400hp without having to buy a bigger block or stroking it out

camarofvr

If I remember right my t-5 and 3.73 gears didn't even make 3 mpg difference. It seemed to put more torque where I used it most so the engine didn't have to work as hard. It's not a big sacrifice over the gain in performance.

VincentZ28

iTrader: (2)

3.73's is only good for is getting off the line and thats it. You can't rev the engine pass 4800 anyway. 3.73's work best if the engine is making power 6000 plus. Anything below that 3.42's works the best because it will give more mph. Don't be fool by the quicker acceleration.