1989 305 TPI/700R4


AFPR w/ ported plenum
ZZ4 cam
World Products 305 Torquer heads
Full exhaust (headers, catback, and cat)
3.23 or 3.42 gears
fresh GM reman 700-R4


on street tires?
probably not right?

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1989 IROC
305 TPI/A4

-just trying to keep it running

 

I don't know about low 14's. Maybe mid thought. Just think this one guy I know has a IROC with the L98. Anywayz he only has a 3" flowmaster exhaust, MSD type thing not sure which company, K&N filters. That's all he has and he pops 14.6!! WIth only about $350 worth of mods. Wait...atucally maybe you will hit low 14's. This one guy put ported TPI, 88 corvette heads(this would kinda be bad for compression) and plus those world heads would probably be better. full exhaust and I think 3.73 gears. Also I think he may have had pistons not sure though. And hell his car popped 13.5!

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Chris
91 RS 305 TBI
Team Neo Blood

 

low 14s? people have gotten 13s with those mods on a 305 minus the heads. cam and bolt on mods is a sure way to get a 305 in the 13's if the parts are matched and everything is in tune. im not too sure how well the zz4 cam would work on a 305 though those heads would help out alot imho you would be deep into 13's. btw what are the specs on that cam? my only suggestion to you is to make sure you find out how that cam would work with a 305TPI. It could cause major tunning problems, or cause too much vacum that would be worse then the cam you have now. i cant stress enough that you find out more info about that cam. good luck Quick.

[This message has been edited by 305-Jive (edited July 28, 2000).]

 

IVE SEEN SLIPS OF A GUY WITH A 88 305 5-SPEED TRANS AM,3.08 GEARS AND ALL HE HAD DONE WAS A k&n AIRFILTER,AND REMOVED THE SCREEN IN HIS maf SENSOR,AND GROUND DOWN THE FINS..AND HE RAN A 14.7 OR SO....WITH THOSE MODS,I DONT SEE WHY NOT...
MY CAR IS SUPPOSED TO HIT A 14.9 OR SO AT PEAK PERFORMANCE...AND IF I HAD THOSE MODS,I SURE AS HELL BE HITTIN LOW 14'S....


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88 WS6 Trans Am
305 TPI 5-speed
bright red w/ black & charcoal cloth interior
black GTA rims
Centerforce dual-friction clutch
10-bolt posi w/ 3.08's
Flowmaster 3" single chamber cat-back exhaust
MSD cap/rotor/8.5 mm wires/blaster GM coil
T.P.I.S. airfoil
more mods on the way..SOON!!
"if at first you cannot speed...try,try again..and if it doesnt work..burn the rice and buy American"
why do they say i have a drinking problem??I DRINK..I GET DRUNK..I FALL DOWN...NO PROBLEM!!!
http://hometown.aol.com/redhottlb9/myhomepageindex.html

 

Here's what I have. Compucam 2030, 1.6 roller rockers, airfoil, modded MAF, modded air filter box, K&N's, underdrive pullies, ported plenium, Headers, flowmaster catback, shift kit, and 3.23 posi.
I want to put a in set of 3.73's and a 2200 stall convertor.

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3700lb 86 Z-28. 14.52 @ 93.13mph. 305 TPI

 

The ZZ4 cam specs (originally posted by Kevin91Z)

208/221, .474/.510 and 112 LSA

Ive been told this cam will work fine with my 305.

Id love to hit a 13.99 with this setup

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1989 IROC
305 TPI/A4

-just trying to keep it running

 

With the cam you have and those cylinder heads,I think you have a real good chance of running low 14s. Good luck,I'll be hopeing to run in the low 14s myself when i go to the track in a few weeks.......

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82 firebird with 305H.O.,Block bored .30 over,Keith black hyperutectic flat top pistons for 10 to 1 compression,Turned crank,Magnafluxed connecting rods,Melling H.V. oil pump,and double roller timeing chain,Ported and shaved heads w/3angle valve job,Z-28springs,Summit push rods and comp cams magnum roller rockers,Ported Edelbrock performer r.p.m.intake,Carter 625 afbcarb,Accell spark plugs,wires,and H.E.I.super coil,Heavy duty cap and rotor,Clevite performance cam with 450-460 inches of lift,Comp cams lifters,700r-4 tranny rebuilt with trans-go rebuild kit,corvette servo,New torQue converter,Flowtech headers,Flowmaster muffler,3.73limited slip rear end,Energy suspension bushings from front to rear,Energy suspension tranny mount,New center link,ball joints,trans-am steering box,Hopeing to run good times when i FINEALLY do get to the track!!

 

TTT

all opinions wanted.....is there a better 305 setup out there for the price

 

damn thats a mid 13sec car right there, hit me up if you get that alldone. a new cam, rework the heads, new valvetrain, port tpi intake, slp runners and some prom buring along w/ good igition and lca's and your good to go

 

I wouldn't get the heads(not worth the money) but get a good torque converter and new valve springs instead. You WILL NEED custom chip tuning to get the most from a cam swap. You'll also need traction some cars are alright stock and some need help like LCA, LCA brackets, torque arm. I assume you're getting a used ZZ4 cam, LT1 cam would probably work well too.

My '89 5 speed 305 TPI ran 14.6 @ 96 mph on the stock cam (L98). Think low 14s with a decent 2.1x 60'.

Don't get SLP runners, I lost .5 sec and 5 mph with them on my car(this was with a saimesed base and cam though), so I think they killed intake velocity. I wouldn't spend any money on the TPI intake itself, save for a LT1/miniram/carb style anything with shorter runners. Hell my TBI with a peanut cam pulls higher RPMs than my TPI did stock.

 

Word

 

Beast5spdGTA/ V8Astro Captain


isn't any of those setup a little extreme on a 305

 

No, 22" long runners with ~6" of that length horizontal are extreme for making HP.

 

I don't see why a decent heads/cam/exhaust 305 wouldn't run well with a HSR intake on top... A good 305 with aftermarket intake, S/R heads, full exhaust, hot cam, etc should make around 300hp. Get the launch down right and it could run high 13s easily I would think with an auto.

 

free mods first, get a base line ET/MPH to work from. suspension work would be the first thing logically, gotta get the power to the ground right. so like some spohn adj. lower control arms, lower control arm relocation kit, adjustable torque arm, subframe connectors and a pair of drag radials if u need em. put a 9 bolt in that car with 3.27s even 3.45s, but ehy might be a little much for a 305 with auto. a stall converter and shift kit, world product torquer 305 heads and a ZZ3 cam would be pissa, u could try usin slp runners with that combo with out porting anything, just gasket matchin the ports. PROM work will be needed though with that cam.

my mods that got me to a 13.9 @ 97.08 stock heads cam

vehicle weight with driver 3350 with a 1/4 tank of fuel

hollowed cat
emissions delete
A/C delete
throttle body coolant bypass
cut the bottoms off the air box
manifold air temperature sensor relocated to the air box cover
160 stat, manual control dual fans
dynomax super turbo exhaust
dynomax headers
headman Y pipe 2.25 to 2.50
ported plenum
ac delco plugs
centerforce dual friction clutch
energy suspension torque arm bushing
energy suspension tranny mount
9 bolt with 3.27 gears (not run at the track yet)
pbr rear calipers and 11.86 rotors