Probably the only 85 Firebird with a 307 in it, but actually, it fit quite nicely. The old FI engine that came with this bird was weak on power and speed, so put in a rarely driven 1981 Olds 307 in. A great group of guys helped put in a Comp Camshaft, Edelbrock Performer Olds 350 intake, Edelbrock 650cfm carb with electric choke, added a spectre polished alum air hat and cold air intake, double roller timing chains...kept the R204 transmission--so added a shift kit and a stall converter. Runs and sounds great! Was able to keep the original radiator...but needed to add a continual running fan to it to keep the heat down. I'll post some pictures up soon. Still looking for that hard to find 4:11 rear end...if you have one, let me know!!!

 

ida kept the v6 over the boat anchor olds 307...

 

Clearly you dont engines, especially a 307.....can't believe you would want a 135hp piece of crap 2.8L fuel injector with NO possibility of upgrade to a fun, old school V8, now with 376HP.

 

LOL, this is great...

Obvious troll is obvious.

It's also clear that you haven't done any research on the 2.8, there is quite a bit you can do with the 2.8L to get plenty more power.

Also you added a whole lot more weight to the front end of the car, that means you effected handling and overall need for lots more power, but hey, I get the same "Why would you build a V6?" until I show them why....

If I was going to go V8, an Olds engine would be one of the last I would use.

 

Stock 307 has the same hp as my 3.1L....

 

hey, i got a v6 for ya...bring your olds motor down here

ill give you the same offer i give everyone else, you can choose ill use the burnt up clutch or ill put a new one in

 

ill take u up on that but u better put the new clutch in lol

 

v6s cars are void to that offer

 

lol not afriad of a big bad v8 but scared of a v6???
lmao though in all seriousness ur car would deff give my 3.1 a good run though im still not sure asince we never got to go wot in ur car once its tunned i think ur car would walk my 3.1 at low boost

 

Man guys, you all must be under 40 yrs old...this is a fun car, sounds AWESOME, and was the car I dated my wife in HS. I'm not going to turn 13's in a 1/4 mile.

 

It aint stock.

 

not bashing u for putting in a v8 but u picked a bad motor to replace the 6 with.

 

and apparently your over 40 and have no idea what these motors can be upgraded to.. our cars are just as fun as your boat anchor 307, we can get that much hp and be 100's of pounds lighter

im not saying your car isnt fun, id drive it with that motor in it. however there are v6s f-bodys that would destroy you

 

for the same amount of money u spent on that dog of a 307 no less

 

Ive forgotten more about engines then you will ever know.

I can GAURANTEE this..

307 with 376 hp...LMFAO the amount of boost it would take to make that power, or nitrous shot..would be HUGE..and i doubt the motor would handle it..

307's are BOAT ANCHORS.

 

Lol, finsman, I don't think you can win the the V6 board. I had the itch for a V8, but I've realized why a fast V6 is better. Lighter weight, same power as an 8, and I have better handling due to my motor's weight being more towards the center of the car.

 

I'd sooner use a Chevy 305 over the Olds 307...
http://www.superchevy.com/technical/...ild/index.html

 

couldnt be farther then the truth...

but i see what you are trying to get at.

 

Let me rephrase that, since you can't figure it out.

The V6 can be made to have the power of a V8. Without the work of taking everything out just to make another work.

 

Uhm, i can read and comprehend things just fine.

What's wrong with your statement is, its simply not 100% truthful.

While the v6 can be made to have as much power as a relavtively STOCK v8...its certainly MORE expensive.

Swapping a v8 in, takes so little effort in a thirdgen, so that argument doesnt work.

As far as better handling, if you're going to make a statement like that, have some facts to back it up..lets see some slalom numbers, or some skidpad g numbers.

Tires/suspension work will make ten times the difference then having a v6/v8 will.

 

So swapping in a 350 TPI is little work? That's removing the V6, the tranny, the harness and changing the PROM.

I can put a M90 supercharger in my car for $500 and make the power of a V8. It would cost me more than that to put a TPI 350 in.
If you want to upgrade your suspension that's even more money. I'm trying to find a member on here who's V6 car pulled 1.06G on the skid pad with street radials.

 

i belive it was a 1.07g but i wouldnt exactly call that car ur run of the mill v6 car either

 

That's true, but still a V6 car nonetheless.

 

I swapped a 250 HP V6 with potential for more with a proper tune, into my 1985 GMC Jimmy, for less than a V8 swap would have been, I could do the same in a 3rd gen.

So for a V8 hugger to say that building a V6 to have the same HP or more than a V8 is not true, is a very inaccurate statement.

 

Yes, swapping in a TPI 350 is easy work, and cheap. Nobody messes with TPI anymore, almost all of it can be had DIRT cheap, 90% of the time, its thrown away.

a 305 LG4 makes like 140 hp...you need to specify what v8 you refer to, simply swapping an eaton M90 onto a 2.8 v6, isnt going to make it run with a TPI350, and thats a fact.

Suspension is something thats NEEDED, regaurdless of what motor/trans the 3rd gen has.

You claimed your car handles better then a v8 car, simply because its a v6, thats a rather bold statement, i asked for some sort of FACT to back that up.

v6 means nothing, specify.. i have a friend with a GN running 8s on the stock bottom end.

go back and read what i wrote.

I didnt say it wasnt possible, in fact i said it was very much possible to match/slightly beat what a v8 will put out.

what i also mentioned was, its not cost effective, even if the swaps were to cost the same{which they wont} you are still settling for either less power,or less reliability.

Im not a v8 "hugger" as you so nicely put it..but i also dont go out paying more for less, it just doesnt make sense, in my opinion.

 

My father has a 89 RS like mine, but with a 305 TBI, I can't make it take corners like I can with my 6.

I'll put a turbo on my V6 just like Dave did with his. His old numbers are 270hp/and 340tq I believe and he ran 12.9s. On 9 psi. https://www.thirdgen.org/forums/v6/5...my-3-4-t3.html
Pillbury is working on a 3.4 turbo, Dave commented with his power ratings as well.

It may be cheap where you are for TPI parts, but it isn't down here, if you can find them.

 

You seem to have a problem with comprehension, or just simply don't want to understand.

250 HP from a V8 or from a V6 is 250 HP. The only "less" that is here is weight, and number of cylinders.

My old, improperly tuned (this was back before I got into ECM tuning), 3.2L turbo V6 went for about 40,000 KMs before I decided to take it apart, it still ran perfect the day I removed the heads from it. Then other projects took over and ended up parting out that engine. I abused that engine like I stole/hated it, it loved every minute of it. So don't tell me I'm giving anything up, by making well planned purchases to keep costs down.

TPI would be one of the last intakes I'd use on a SBC.

If I wanted 4 digit HP, I'd probably go V8, if I wanted to stay domestic, or go with the SBC of imports and use an RB26.

I don't want, nor need 4 digit HP, what I want is a light, nimble package, with more than enough power to get in trouble, a properly built and tuned V6 will accomplish this.

Planned right this would cost LESS than a V8 (swap) would and in the case of starting with a V6 F-body, would cost less overall, since there wouldn't be a need to change just about everything in the engine bay.

It's getting to the point where this statement is true:

Be different, just like everyone else, mod/swap to a V8.

I'll stick with my sixes, and walk around many of the V8s out there, thank you.

 

I am an Olds guy as well as a 60* v6 guy, sorry to say but you are not putting out that much power on a 307 from those mods maybe on a 350. you would be lucky to hit 300hp on a 307 with a cam/ intake/ carb. look up the engine masters 307, it hit 430+hp but it took alot to get that out of it.

I had a Olds 350 in my 83 after I blew up the 2.8 but only because I was broke and had the 350 and a welder sitting around! cheepest 2.8 I could find at the time was $300. it was fun but if I kept the car it would have got a bigger v6!

 

I dont know, this is a pretty fun board...you guys take your **** too serious! hah...no, I understand in the world of speed, putting a 307 into a firebird is not the wisest choice; however, it does not leak a drop of oil or any other fluid, runs great with a Thumpr competition cam, edelbrock intake and 600cfm carb, putting in a 3:73 posi next week. Yes, there were a ton of other options, but this one presented itself and was CHEAP...and it sounds really good, a sound that dead 145hp 2.8L FI would never make. I dont know what you would have to spend to get something out of that v6 that was in there, but it has to be at least triple what I spent. Also, my firebird is 100% original other than the motor/trans and only has 78k miles on it. It's pretty sweet.

 

AND..if anyone wants that hunk of junk v6 and tranny, come and pick it up for free!

 

That's 100% original? Interesting math...


But adding a turbocharger somehow makes a V6 car less original than your car?
Interesting logical schema...

 

But a major down side is it now has a carb. lol.

I'm working a bare bones turbo project. I'm betting it can be done for under $500. There's no decent v8, trans, ecm, & mounts that can be had for that price.....

 

Alright guys, let's take a second look at the first post.

I don't see anything that specifically bashes on v6's here though it does imply that the original was a turd, which is completely accurate in any case lol. He was excited about his engine swap and wanted to share. Granted it wasn't the best form to post in, but still an interesting and unique swap (like what we do). I for one want to see some pics of this critter instead of interpriting it as a sneaky way to convert v6'ers to v8's.

So finsman.

 

I posted a few of the engine but I dont know how to direct you to them.

 

https://www.thirdgen.org/forums/album.php?albumid=3847 The pics are on page 6.

 

uh...yeah...hahahah. ok, body and interior 100%, engine 0%. haha!!! Anyway, its not like I'm married to this 307. I can take it out, put something else in when I'm bored with it or put it into some other car. The basic point of the matter is that the original 2.8L motor was a DOG and not worth doing anything to. Plenty of agreeable posts on that matter.

 

The same was proved about your 307. Either way, as long as your happy, who cares?

 

I know 350 heads fit 307, also too bad not 85 - up, cause they are roller motor. youll have trouble later out of lifters ticking non-adjustable. but decent gas milage for v-8. have same motor in my Hurst Olds 15th Anniversary, and my 87 442 is roller cam/lifters,factory..

 

Definately different! Now you need to put an olds diesel v8 in there haha!

 

I think ya gotta have one of each!

 

man that's cool looking!

 

i drive it about 1000 miles a year. there are so many options out there...i'm still looking for a big block and 68 f'bird like I had when I was a kid. Still a few to find out there no doubt.