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  #11  
Old 05-27-2016, 10:00 PM
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njsteve njsteve is offline
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Default Re: NOS Chevy "factory high performance" 307 engine?

Are the marine engines reverse rotation?
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  #12  
Old 05-27-2016, 10:49 PM
lowmile lowmile is offline
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Default Re: NOS Chevy "factory high performance" 307 engine?

They are standard rotation, He's had them a while but he doesn't forget ANYTHING! They also come with vintage Mallory distributors, something about the GM version had an open spark which is a no no on a boat.
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  #13  
Old 05-28-2016, 02:50 AM
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bbbentley bbbentley is offline
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Default Re: NOS Chevy "factory high performance" 307 engine?

Very interesting, never knew about the marine 307. I don't have anything against any small block Chev. , but that was one engine that was ok for transportation and never considered by myself or buddies to "hop up". The small bore, long stroke just did not make sense to race. Too restrictive breathing as the valves too close to cylinder walls, IMO. I wish I had one 307 now, that I passed on, BITD. It is the one out of the yellow 69 Camaro I have. The eng. code is DE if y'all ever come across one. I am willing to bet not too many were put in front of a 4 spd. like this one ? When I bought the car, I had been married for 3 years and while we were making our bills, we did not have a lot of extra cash. I had parted out a couple of cars earning the wife's approval to bring home cars I deemed to part out. The guy had the engine, 307, but he had it boiled out and bored .040. I thought, were would I find slugs for that? and why would I invest in such an engine? So, I bought the car and passed on the engine. Guy wanted $200 for each (car or 307). I ended up keeping the car, why, I don't know? My neighbor who was the same age and we pal'd around bought a nice 68 Nova 307. He was afraid to drive it because of the racket it made. Finally, wanting to help him, I had him open the hood and put it in gear and stand on the brake while giving it some gas. Found the problem. A broken L motor mount. That thing was ready to jump out of the engine bay, lol. Other than a couple of 72 307 pick ups, that is all my 307 experiences (Not true, had a couple of 70 Camaros with 307s but another time perhaps). Just thought guys would like a peak into the window of my life, so I share. Hope I did not Hi-jack or get too off topic?
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  #14  
Old 05-28-2016, 02:05 PM
lowmile lowmile is offline
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Default Re: NOS Chevy "factory high performance" 307 engine?

BBBenny If a topic on a 307 high performance engine couldn't wonder off in a different direction, I don't know what would. LOL
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  #15  
Old 05-28-2016, 02:52 PM
volquartsen volquartsen is offline
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Default Re: NOS Chevy "factory high performance" 307 engine?

I have a 1970 Slickcraft boat that has a chevy 307, motor is marked as a OMC...
Wondering if this motor would be the same as the high performance motor?
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  #16  
Old 05-28-2016, 03:14 PM
bracketracer-78 bracketracer-78 is offline
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Default Re: NOS Chevy "factory high performance" 307 engine?

Back in 1988 my dad and I pulled the original 307 out of my 1972 Chevelle to swap in a 350. My dad had no idea what to do with the 307 so he bairied it in the backyard. It's still there. If anyone wants it bring a shovel.
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  #17  
Old 05-28-2016, 03:28 PM
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bbbentley bbbentley is offline
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Default Re: NOS Chevy "factory high performance" 307 engine?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: lowmile</div><div class="ubbcode-body">BBBenny If a topic on a 307 high performance engine couldn't wonder off in a different direction, I don't know what would. LOL </div></div>

No disrespect to my brother from another, bbbenny, I am bbbENTLEY, but ok, nonetheless, appreciate the compliment,lol.
Appreciate the humor in &quot;letting me down easy&quot; on the different direction, but as a Cincinnati,Oh. Hillbilly, &quot;marine&quot; was where your cousin went to serve our country, not talked in engine circles around these parts,lol.
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69 SS/RS 396 M20 X22 Nor 12B,72B,712 bought 1979
FULL OWNER HISTORY
69 Dick Harrell tribute Day II 427 M20 4.10 X11 76 orig pnt, 711
67 Super Stock 302 Camaro re-creation
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  #18  
Old 05-28-2016, 03:56 PM
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Default Re: NOS Chevy "factory high performance" 307 engine?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: WILMASBOYL78</div><div class="ubbcode-body">It would be interesting to know if there was a different cam or other special components. I always liked the 307...they ran forever...made decent power...simple to work on.

wilma </div></div>

Great motors. 200 hp and real smooth. They feel strong with a taller gear out back. I bought a 68 Nova with a 307,Glide and 3:08. swapped in a 3:73 and a M21 and the little mouse was a lot of fun. later I sold the engine to a guy and he dropped it in a 65 C10. He says it runs fine and pulls strong in front of his 3 on the tree and 4:10s.

Tommy
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  #19  
Old 05-28-2016, 04:14 PM
Verne_Frantz Verne_Frantz is offline
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Default Re: NOS Chevy "factory high performance" 307 engine?

By July '69, Tonawanda shipped 4976 307s for a 4-spd under two different part numbers. There were also 2 COPO 307s shipped, one for the M35 and 10 for the M38.

Verne [img]<<GRAEMLIN_URL>>/flag.gif[/img]
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  #20  
Old 05-28-2016, 05:24 PM
lowmile lowmile is offline
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Default Re: NOS Chevy "factory high performance" 307 engine?

Yes these came out of an OMC dealer. The pad stamp is VO7114CX
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