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307 Ci

skelly1

skelly1

1/2 ton status
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San Diego, CA
Anybody run a 307 in a first generation? I think that the 307 was a car motor. I remember them being in Nova's. Anyways, this guy closeby has a gen 1 that my friend is interested in and it's got a 307. I'd like to know how the torque is in that motor.
 
they did put 307's in trucks. they are not very good motors by any means. not really worth their weight in scrap.

Sorry, fast typing got me, all better now
 
Last edited:
79k20350 said:
they did put 307's in trucks. they are very good motors by any means. not really worth their weight in scrap.
Click to expand...

I can't tell if you are saying the 307 is a POS or if it's good?
 
OK, I'll run the numbers on it and first confirm it's a 307, then make my recommendation from there. It's got an edelbrock carb and intake, so maybe it will run halfway decent. Stay tuned.
 
the 3.25" stroke crank can be used in a 350 block to build a 327. not the best choice for a good truck engine, but a good all around engine. they like to rev.
 
Eh...I have had many..

I have a 73 307 in my van,an 81 G10..it came from a 73 Chevelle..the worst year for a 307,it was only rated at 115 HP!...it went better with the 250 six I took out I think..2.73 rear end gears and 235/15's were not a good choice either..it goes 75 in second gear though!--but it takes a while to get it there..I love dropping it in second when going 60+ mph--it makes the guy next to you do a double take!

They love to wind out,but don't have much low end torque..68-71 307's
were rated at 200HP,and 300 Ft lbs of torque...sounds overated to me!--I had one in a 71 K10 suburban--it said "hi-torque" on the sticker on the valve cover.I think it lied!:haha: ..The short stroke doesn't make them a very torquey motor...a 305 has much more low end,it has the 3.48 inch stroke,same as a 350..VS 3.25 inches for the 307..

I had 283's that would smoke the 307's,despite being nearly the same motor..also had one in a 68 Caprice Estate wagon,and my dad had one in his 68 Chevelle wagon..I think 3 out of the 5 we had in our family all ate the lobes off the cam..it was the #1 cylinder exhaust lobe that was the most worn in all of them...seemed to be a common problem in 307's and some 305's..

I'd say a 307 isn't scrap,but I'd look for a 350 for a truck,or a 400SB ..A 307 is a good motor for economy and lighter vehicles,but I wouldn't put one in a full size again unless it was perfect,and I had no alternative,or was looking for good gas mileage instead of power..(my van gets 15 mpg though..same as a 350 would have!)..

I only used the chevelle motor in my van because I needed a motor in a hurry,and this one ran decent,and only cost me 150 bucks for the whole car..I cut it up,used what I needed,kept tons of parts,and scrapped the shell for 100 bucks..I'd say the motor was worth the 50 bucks it ended up costing me..but it wasn't a great choice for my van!..not enough power for a heavy vehicle..:doah: :( ..
 
diesel4me said:
I had 283's that would smoke the 307's,despite being nearly the same motor..
Click to expand...

the shorter stroke lets the 283s reve better yet, that's the only way a 283 could beat a 307.
 
Okay, looks like the general consensus here is that the only thing a 307's good for is yanking the crank out to put in a 350 block if you're interested in building a 327.
 
Yeah I agree..plus the 283's I had were in trucks with 4.56 and 4.10 rears too..a world better than the 307/ 3.08 combos in the Impala's and Caprices I had..probably lighter too!..
 
I have been in fast cars before but going slow is my thing:D . And I made a mistake he has a 302 in his Camaro So maybe 307s do suck:doah: .

And yes this car is wicked fast.

Ira
 
Well, it was a turd. Sounded good with the dual flowmasters and all, but it was a "new" 307 that leaked oil and used it. POS all the way around. He offered 3500 for it and the guy was asking 7000. Luckily he did not take it. I didn't recommend to my friend that he buy the truck. The under hood sticker did say 307 2 bbl carb, so apparently it came with the 307.
 
the 307 isnt nicknamed the cam eater for nothing. i had one in a 79 firebird and what a f****** dog. a dodge neon has more balls.
 
You swap that 307 into the Pontiac then?

Sure it wasn't a Pontiac 301? Another piece of crap?
 
307's aren't the most desired. We have one in our 1968 Chevy C20, came factory with the truck... it was in it long before I was born and I still have the truck with the same motor in it and I can go fire it up and it still runs good. No powerhouse with a 2-jet carb, but's it just keeps on going.
 
302's are insane motors. they are a very desirable motor, and very hard to find. (i know someone who has an original, unbored with about 5k miles on it, its been sitting on a stand in his garage for 20 years and he just wont let it go) they were only put in camaros i believe. the goal was to meet requirments for a production class rule for racing, i forget what type though.
 
are you talkin about a chevy 302 i thought that was a ford motor and a rather common one at that
didn't know chevy made one
 
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