I am getting the following:
87 camaro 305 auto with the posi rear (think it is the 190hp engine) 700r and rear axle for a project.

guy is giving me a gm Goodwrench 350 4bolt crate motor as well as he needs his storage cleaned out and has lost intrest. the 350 was in a old truck has 40k on it.

The guy has a wealth of knowledge and he says this can be done ... can anyone confirm?

I want to take the 305 heads and put them on the 350 increasing comp a little bit but able to bolt on TPI fuel injection to the 350.

The GM crate motor I believe is a 290hp base engine and that is carbed .... do you think this setup will increase to a 350hp/350tq range or if it can be done?

thank you...

 

1. Learn to spell "Camaro" right or else people here will destroy you.
2. You can swap 305 head to 350 no problem and with good results. It just depends on which heads you have for the 305. 416's Carbed 305 heads are a good choice.
3. The heads in stock form will not produce a 60hp miracle. It a more agressive cam. Upgrade the heads and you can get there.

 

It can be done fairly easily, but is there a problem with the 305 or is it the need to replace it asap for more power? IMHO I would hold off on the 350 (if the 305 runs) and get you some better flowing heads or port your own, and bump up the peanut cam that came with it. The 305 heads will bolt on, and since the intake base is from a 87+ it should bolt up to any newer heads without having to elongate the center holes. Are you keeping with the TPI or leaving the carb on the 350?

 

It can be done fairly easily, but is there a problem with the 305 or is it the need to replace it asap for more power? IMHO I would hold off on the 350 (if the 305 runs) and get you some better flowing heads or port your own, and bump up the peanut cam that came with it. The 305 heads will bolt on, and since the intake base is from a 87+ it should bolt up to any newer heads without having to elongate the center holes. Are you keeping with the TPI or leaving the carb on the 350?

 

is it me or is this site is lagging? Anyone else having trouble posting?

 

Yes it is lagging ...

The 305 was running fine when pulled. I just thought it would increast the 290hp of the 350 crate motor and have better fuel economy by putting on the 305 heads and TPI intake.

trying to get 350hp 350tq out of what I have without spending any if possible.

 

Fuel economy is worry? 305 heads should not be an option. You will have to run premium octane due to compression ratio.

 

Understand something, you're talking about 190 apples and 290 oranges.

In other words, they would be more like 230 oranges and 230 apples, respectively.

To further expound, the 190 HP of the 305 TPI is "net" flywheel horsepower, measured as the engine would be as-installed in the car - intake, air cleaner, water pump, alternator, exhaust, all as if in the car. On the other hand, the 290 is "gross" flywheel horsepower with an optimized dyno cell set-up - carb, velocity stack, open headers, electric water pump powered by the facility, no alternator, etc. They even go as far as to use one setup to get a max horsepower reading, and another to get the max torque reading.

The detractors: TPI doesn't do much better than it does on the 305 - want more, need major mods, or go carb. The Goodwrench crate has horrible heads and dished pistons - 305 heads help bunches, but need larger valves and porting to get more out of it.

So, just putting the 305 heads and TPI on the crate shortblock may get you up to 200 net ponies, but probably only 240 gross equines (vs. the 290 the 350 crate is rated at).

Are you understanding the problem here?

Want the best of both? You're either going to have to spend some major bucks upgrading the TPI, or switch to carb and give up the benefits of EFI.

But, the 305 heads on the crate shortblock is a good starting point. It just needs more to flesh it out.

By the way, it was probably a 260 horse Goodwrench engine. The 290 horse crate has only been out for a year or so.
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Not true. Those crate engines have dished pistons. With 58cc heads, you're only at about 9.0:1 CR.

 

I forgot about the crappy compression ratio of the crates... The contrary is true about the factory 350 in the thirdgens... the compression ratio gets upwards to the 10.2:1 area.

 

so putting the 305 heads on the gm 350 will bump it to 10.1ish:1 and the TPI will give it great trottle responce. A good cam would get me close to the numbers I would like to see ?

 

Sorry to point it out again, but in a factory 350, not crate. The TPI is not going to give you the numbers you expect in stock form. Typical TPI system run outta breath at 4200 - 4500 RPM, then drop off. On a dyno setup they will give any combo a try to get the max outta the motor, hence a carb would breath well above the TPI, to get the better HP or torque results. Not trying to sound like a broken record, but you have to spend some $$ to get the numbers you are expecting.