CK5
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305 or 307
- Thread starter fastazz81
- Start date
But will it breath well enough to get him home quick enough from date night ?
The 305 had the HO version in the eighties Camaro, right??
They got the ho to the house, no?
I never have driven a 305 much, never owned one.
I had a 307 2BBL in high school. It ran good enough for my girlfriend at the time to beat a 304 CJ5 in a rolling race in WY.
Got me into a little trouble here and there. Used a fair amount of oil, so it would have been considered low friction rings..
They got the ho to the house, no?
I never have driven a 305 much, never owned one.
I had a 307 2BBL in high school. It ran good enough for my girlfriend at the time to beat a 304 CJ5 in a rolling race in WY.
Got me into a little trouble here and there. Used a fair amount of oil, so it would have been considered low friction rings..
Yes on the HO, happen to still have two in running condition,one has a cam and some head work though. I’ve never driven anything with a 307 that was well before my time.
The girl or the 307?The 305 had the HO version in the eighties Camaro, right??
They got the ho to the house, no?
I never have driven a 305 much, never owned one.
I had a 307 2BBL in high school. It ran good enough for my girlfriend at the time to beat a 304 CJ5 in a rolling race in WY.
Got me into a little trouble here and there. Used a fair amount of oil, so it would have been considered low friction rings..
307 is a durable motor but solely built for economy and longevity with 3.875” bore and 3.25” stroke.
I’m not a 305 fan but it does have a decent stroke at 3.48” but with a cylinder bore of the size of a beer can diameter it can’t breathe well with them small valves being limited.
Y’all can put the 305 crank in the 307 block - or better yet take the crank outta the 400 in that other discussion y’all are having.
Or just call up DART and get the cool parts started to build a 632 BBC and then all power curve issues will be dealt with.
Just a thought…
I’m not a 305 fan but it does have a decent stroke at 3.48” but with a cylinder bore of the size of a beer can diameter it can’t breathe well with them small valves being limited.
Y’all can put the 305 crank in the 307 block - or better yet take the crank outta the 400 in that other discussion y’all are having.
Or just call up DART and get the cool parts started to build a 632 BBC and then all power curve issues will be dealt with.
Just a thought…
Both, but the truck didn't supply its own lube.
For being in a C10 lwb, the 307 did ok for transportation and some limited fun.
Maybe because I lived in the 307 area code.
Thanks for kicking in some tech, since this is in the garage.
I never understood why anyone would put any parts or effort into a 305. I heard that they had detonation tendencies easier than a 350, but I had no experience.
I swapped a 305 in place of a blown up 350 just to get a truck going one time. It worked for what was needed at the time but I wouldn’t throw money at one. 307s were before my time but the gf and I had dinner with my mom and dad tonight and I said 305 or 307 and my dad said “that damn 307 was the biggest waste of iron gm made, what a boat anchor” 
guess he picked the 305
guess he picked the 305
I've still got the original 305 out of my K10 with 200k miles. Still ran good when I pulled it!!
I might have to pay someone to take it off my hands though...
I might have to pay someone to take it off my hands though...
My '69 Nova came with the 307 boat anchor. First time down the track at Bandimere's elevation it ripped of a whopping 22 second time slip. As a poor high schooler I dropped the time in the low 17's with a fresh valve job, cast iron 4bb truck intake and q-jet. Honestly, outside of leaking fluids from every pore and pushing enough oil past the rings to rival a crop duster it was a great engine. It never failed even when I tried to kill it.
Within the family fleet we had multiple G-bodies with 305's from the 4-speed Malibu to an El Camino and two other Malibus with a 305/auto. They were all 2bbl equipped and had the same level of gutlessness. Though I remember my Dad running one of the auto equipped Malibu's at the track when I was up there with the Nova. I want to say it was in the 18's. All were equipped with 2.73 or less gears in the rear axle. The 4-speed car felt faster than the others probably for the only reason that you could actually launch it with a clutch dump and get out of the hole much quicker. Well, at least as long as the clutch holds up.
Hey Dave if you want a 307, say the word I got a clean one for you. Just needs a little clean up....
Within the family fleet we had multiple G-bodies with 305's from the 4-speed Malibu to an El Camino and two other Malibus with a 305/auto. They were all 2bbl equipped and had the same level of gutlessness. Though I remember my Dad running one of the auto equipped Malibu's at the track when I was up there with the Nova. I want to say it was in the 18's. All were equipped with 2.73 or less gears in the rear axle. The 4-speed car felt faster than the others probably for the only reason that you could actually launch it with a clutch dump and get out of the hole much quicker. Well, at least as long as the clutch holds up.
Hey Dave if you want a 307, say the word I got a clean one for you. Just needs a little clean up....
You guys are forgetting one of the best boat anchors ever! The venerable 267 sbc! Great engine! Way better than the 305! The 305 had that small bore, that kept you from putting real valves in it, so not enough power to blow up! The 305 had a 3.736 bore. Way too big, for proper HP control. The 267 has a wonderfully puny bore of 3.5 inches! No way in Hell to get valves in that thing! The PERFECT bore and stroke, to prevent almost all of the horsepower being made, thus preventing the damaging forces cause by rpm, and cylinder pressure! This engine will virtually last forever, or until the 80's camshaft goes flat!
Wasn't there a 262 V8 in the Monza? I did forget about that 267.
@ktmoutfront can probably tell us about the 283.
@ktmoutfront can probably tell us about the 283.
Yep the 262 was a real powerhouse too. But it at least had a short stroke. 3.1 inch. So if you stuck a 4bbl carb on it, it would turn 5000 rpm!
Why? Why am I being sucked into another "useless engine" thread?
Just to add to the discussion of the all-mighty 305 ( and related econo GM offerings ) ; my Brother got his first car in 1983 and it was a nice 77 Camaro with a 305 2Bbl and TH350 with a 2.56:1 open rear.
High performance this thing was not but you could not get that through to my brother .
He put an chrome open element air cleaner on it and when he heard the air being sucked through that massive fuel delivery system of Rochesters finest, plus the struggling three-hundred and five cubic inches working to overcome the lame axle gearing, he just knew that he gained instant horsepower of great quantities!
All he could hear was the air being pulled through the carb so he never understood that the car was barely moving and needed help just to pull smoke off a hot biscuit.
But he did put a set of CRAGAR S/S’s on it with some 60 series rubber all the way around so at least it looked the part - but it damn sure wasn’t gonna win any street races with that set up !
To this day he still thinks that car was feared amongst the local gear heads - never had the heart to tell him otherwise…
Long live the memories of those three-hundred and oh so important five cubic inches of GM’s economy V-8 history.
High performance this thing was not but you could not get that through to my brother .
He put an chrome open element air cleaner on it and when he heard the air being sucked through that massive fuel delivery system of Rochesters finest, plus the struggling three-hundred and five cubic inches working to overcome the lame axle gearing, he just knew that he gained instant horsepower of great quantities!
All he could hear was the air being pulled through the carb so he never understood that the car was barely moving and needed help just to pull smoke off a hot biscuit.
But he did put a set of CRAGAR S/S’s on it with some 60 series rubber all the way around so at least it looked the part - but it damn sure wasn’t gonna win any street races with that set up !
To this day he still thinks that car was feared amongst the local gear heads - never had the heart to tell him otherwise…
Long live the memories of those three-hundred and oh so important five cubic inches of GM’s economy V-8 history.
When I got my 81 Monte Carlo, it had a 2bbl 267 sbc, and a turbo 350c, with 2.29 to 1 rear end! HOT ROD!!! lol I then put a .060 over 350, and a 700R4 in front of the 2.29's!
