What's the best/most affordable way to hit 300hp with an '87 305 TPI (don't say drop in a 350...later on down the line it will be). I already have intake, ignition, catback exhaust, airfoil, ported intake manifold. thermostat.

 

MONEY.......:hail:

 

75 shot. Seriously.

 

You can then just transfer it over to the 350.
Headers will also transfer over..
And while it won't give you any more hp,gears are a great mod especially if you have the 2.73's like me

 

Still talking Money for that 300 HP......anyway you want to look at it.

 

Heads and cam with a custom chip.

 

More ideas that......Cost Money are you getting the drift of this road to 300HP/305 yet.

 

Check my sig, I have 315 HP in a 305.

 

stock-195hp
headers ad catback-225hp
air foil/pulleys/afpr-230hp
heads-265
cam-280hp
LT1 intake-300hp
tq conveter to go with all the new ower and some chip tuning should put u right at the 14.0 mark if not faster. thats exactly what i plan on doing

oh-
edelbrock heads
LT4 cam

 

I take it lt4 intake and most cams all transfer to 350? Do heads transfer as well? I don't think my 150k engine would appreciate NOS.

 

heads transfer, but will increase the compression ratio a ton over what was on the 350 before. Everything else can transfer: headers, cam, intake,.. knock sensor is gunna need to be changed and bigger injectors.. I plan a similar build up(as you ca see in the sig) and i hope to reach into the 13's by next year with suspension and new TC. good luck man 305 for life!(or till i have enuff for a 350)

 

I would definitely think he would be running closer to the mid to low 13's with that kind of setup if I can run upper 13's to low 14's with my setup.

 

I totally agree!

 

Is an LT1 intake going to give me any power gains over a ported stock 305 intake?

-Cory

PS-Apparently you can't say rycer in your sig.

 

300 HP at the flywheel is reasonable with a 305 TPI, at least I think so. But 300HP ain't gonna do much for ya if you're running high gears ( low number like 2.73 ) , stock stall torque converter etc...


Basics..

Add some headers. These will work with any size small block you decide to drop in...

A true cold air induction setup is usually worth a few ponies as well, and cheap and easy to make.

Get some gear... This is the BIGGEST BANK FOR THE $ for ALL CARS saddled with 3.08 , 2.73 etc gears. This is the biggest SOTP difference you will feel. You'll never regret going to a lower gear.


Okay...you might when you start replacing tires, but hey that's how it goes.


After building up several cars, that's now my first mod...if a car is saddled with crappy highway gears, I start hunting for better ones. I'm a big fan of 3.42's, but that's just me and the TPI talking


You might consider a cam swap if you can score a cam at a reasonable cost, all depends on how long you plan on keeping the 305.


HTH

 

I agree, I would change the gears out with something a little larger. If you have a manual, do something like 3.73, if you have a auto, I would stick around 3.42. There reason is that auto tranny will help put the torque down, but will be harder to drive in rain/snow/etc. with an auto and 3.73. Plus you will still save some gas.

Do all of the above listed mods, then do that 75 shot!

 

i think with that kinda setuphe will be running 13.9's
and then with a 2400 stall conveter, LCA's, custom prom, transgo shift kit, billet servo, and good tires. a 13.50 run should be very feasible


thats what my plans are. also the heads and cam choice will make tenths depening on what you exactly pick out for your setup