joe14580

There's a 33 Ford for sale with a 305 TPI that I'm considering purchasing. The builder is deceased, I assume he chose this engine as it cost less than the 350 vette engine.

I haven't driven the car yet , I assume it's no hot rod with this motor, nor never will be . Current owner thinks the motor is stock.

I heard it's the same TPI they put into the Corvettes ? Is that true ? Any thought's about GM's TPI in general ? Is some of the EFI aftermarket stuff better for tunability etc ? Can one change the "chip" in GM TPI
s for more performance ?

Occasionally I see 33/34 Fords with non-GM TPI, I think one brand I've seen is "Street and Performance". It certainly is a better-looking EFI unit ad I'm told it's much more amenable to tuning/tinkering that the GM TPI.

The car weighs 2700 pounds with a 3.08 rear end, with a 3-spd automatic. Any guesses as to what the 1/4 mile would be with the 305 ?

Thanks.

vetteoz

iTrader: (13)

Same intake .
Bigger injectors and different tune for 350's

Changing intake has no effect on "tunabilty".( The TPiS MiniRam can be tricky to get right )
Anything other than stock is going to need a custom tune to optimize perf
The engines with a MAF sensor will tolerate minor mods without a tune better than ones with Speed density (MAP ) because MAF reads actual airflow

The computer (ECM) used in the TPI cars has a removable chip that can be reprogrammed to run anything you want
( within reason )
There are aftermarket EFI control systems out there ($$$) that are more user friendly if you are doing tune yourself
In saying that, the TPI computers have been very well hacked over the years and most tuners can get you a good ballpark tune by mail order for most " normal" head/ cam / intake combos


All these options.
http://xtremecarzone.com.au/index.php?showtopic=386

As you can see from the graphs short runner intake give more top end ; long runner TPI style intakes give massive bottom end
Don't look at the actual Hp ( tests done on a cammed 383 w/TFS heads ),
compare the torque / Hp curve differences between the intakes tested

Stealth Ram (HSR ) is popular all round intake if you have the hood clearance
http://www.summitracing.com/parts/WND-7540/
http://www.summitracing.com/parts/HLY-534-186/
uses all TPI parts, injectors , sensors , TB

Read
https://www.thirdgen.org/forums/alte...gal-whats.html

joe14580

VetteOZ,

I can't thank you enough for the time you put into your reply ! You've given me some excellent links and articles to learn about TPI and EFI systems in general. Take care.

NY3RDGEN

Also, In a 2700pd car. A well built 305 TPI will make a really good amount of TQ. And in such a lite car. It would be fairly fast IMO.

So you are in the right place to learn about TPI in general. Read the stickies up top and use the search button. You can get very good performance oyt of the platform you have there.

And if you want something "Good looking" go over to the apperance section here. You should find alot of pics of TPI's that are polished out and powder coated. There are some really nice looking units on here.

joe14580

Ny3,

NYS here too, Rochester.

I'm still considering purchasing the car as some of my concerns as regards the 305 have been alleviated here. Although I believe there's no substitute for cubic inches so a 350 would've been a better platform to start from, but that's what the builder put in the car .

racecam

Have a 86 305 tpi in a 34 Ford. Live in Winnipeg Canada have driven Detriot 4 times.
Tpi is a great hot rod motor.

ZZ3Astro

Sounds like a great engine combo for 2700 lbs. You can always consider boost. With the small displacement and light weight, you'll get great mileage and with 10-12 psi you'll make 500+ ft lbs of torque. 3.08 is fine for that setup as well.

DENN_SHAH

iTrader: (1)

no one took a guess at 1/4 mile ET.
i will, low 16s to high 15s.
why? traction off the line will be a problem so 60' times won't be good.
if it doesn't have a posi, it will probably have lots of tire spin out past the 60' line too.
with no posi and a bad driver, 18+.
with a ok driver and ok traction, i don't think low 14s should be a problem.
with it being a transplanted motor, i would guess it has better exhaust with headers. if it does, then you would see a boost in performance.
no matter what it does in the 1/4, it should be a blast to drive on the street,.. unless the roads are wet.