Posted: 12/15/2007 7:08:34 PM EDT
My little 289 made 333hp to the rear wheels and 352tq WOOT  |
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Would like to hear your cam and cylinder head specs (Just model and if there's port work). I have a little 289 nestled in my 65 while i refresh the 306. Thing makes pretty good power and is a blast to drive. See avatar my paint aint all that pretty but my tires are bigger. 
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AFR 205cc w/ port/polish on exhaust side. |
Yeah so's that hood 
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Blame the big shot plate 
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Nice, how much NOS you pumping into that 306? |
But she goes!
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Ditch the 306 for a stroked Windsor 408 from Coast High Performance. Topped with 205's,10:1, single plane intake with port match and a "mild" cam you're in the 550hp 500tq range below 6700rpm. Friend has an 83 coupe with the above setup. With a 200 shot the car runs 8.86/152mph. Without its a flat 10.0 car. Stock location rear suspension on 28" slicks with a C4. Very streetable too. Runs premium pump gas. No change with race gas. Nice ride Slurp. |
I cant say my experience with coast has been the best. Some real horror story's from their quality control. The 306 is in there for one reason BUDGET. I sold a 347 with a billet steel rotator, after market block the whole bit to fund some other projects. Plus pushing a 65 anywhere past the 9's is scary business without some serious chassis work. 
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Thats alot of cylinder head and carb for a 331, hydraulic roller? I squeezed out 574hp and 480ft# of torque out of my old 347 on pump gas (11.3:1,ported vic jr's,big solid roller cam,super victor, 750 race demon,etc) but that car was really not streetable for more than driving it to the track and back(40 miles r/t). |
Ah, I knew there had to be something to that "little" 289
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I was referring to the op's 205cc heads. Unfortunatley I had to sell my engine to fund a business startup, it was a baddass little "302"! :D |
How did you get it to run on pump gas with 11.3:1? That's impressive. |
93 octane and a conservative tune. Also, bowl work done to the heads help considerably as does adequate fuel volume. The most common cause of detonation is too lean a fuel/air mixture. |