So i was on the website from autocenter and saw this engine:

GM 350 TPI 300 HP

could i just tear my 305 out and replace it with this one?

or would i have to replace other parts too?

and why does it say there that its '87-'89? was there a difference to the '90-'92?

Thanks alot!

Pat

 

Probably because the '87-'89 F-cars use MAF, which can deal with that cam and maybe not require chip tuning. They're probably assuming an SD car will need chip work, to run right.

 

isn't the whole map-part located in the intake?

would it be a big thing to make it work?

 

It probly runs TPI heads they are specific to TPI intakes for proper flow. I find it odd that the motor itself will make 300hp on a stock computer with only a cam change?

as far as your speed density system you would have to change over to mass air in order to see any better performance because speed density runs on preset fuel curves and can not adapt to severe performance changes especialy 305 to 350 conversions.

 

After reading posts about the MAF-MAP conversion, I think it should be possible to take my tpi-intake with this MAP-stuff and bolt it on to the new engine. After that I'll have to get a new chip.

Is this right?

 

I'm pretty sure it's a whole new computer, not just the chip IIRC.

I'm no expert, but I can't see that engine making 300hp. Cast heads with stock valves? The cam is hardly bigger than a stock L98 cam. I guess anything is possible, but it sounds fishy.

...if it sounds too good to be true....

 

Most of the stated numbers are made on a engine test stand with a Carb intake and open headers. What you will get with a TPI setup will be around 230 Hp at the flywheel if you are lucky.

 

I doupt that. Even with the 305 TPI I made 251hp at the flywheel!
Mods were Borla catback, k&n and afpr.

But I asked them and let you know the answer as soon as I get it!

 

OK now I have the answer from autocenter:

"The 350 TPI engine is emission legal in the 1987-89 350TPI cars. It seems to work fine in the 90-91 TPI cars. You will want to get a custom 350 chip for the camshaft profile and an adjustable fuel pressure regulator. You may need to go to larger injectors (23-24#).
The 300hp was made on the dyno with headers, First TPI fuel injection and Electromotive electronics."

Can anyone tell me what's "first tpi fuel injection" and "electromotive electronics"?
And any suggestion if it will work?

Thanks! :hail:

 

Whatever they used to get those numbers is not STOCK and probably can not be used when installed in a car.

 

i am guessing the electromotive electronics thing is an aftermarket standalone fuel management system, similar to FAST, or ACCEL DFI or any of the other aftermarket fuel system setups. if you wanna run that 350 then all you will need is a custom chip burnt for that engine to go with your SD computer, you do not HAVE to convert to MAF. you can call up Ed Wright or go to pcmforless.com for a custom chip. you can even use the stock 305 injectors as long as you dont have big mods planned.