Bobs 250 Chevy inline 6 DYNO pulls Straight six
250 Chevy, ross flat top pistons, 6" rods, balanced lower end. Built by
Heckt Power. Parts supplied by www.12bolt.com
310 HP and still climbing! Torq is @275 near the start and is maintained to
nearly the end of run.
Head has 1.94/1.6 valves, bolt in intake port lumps are used. 1.75 roller
rocker arms. The block is zero decked.
Cam has 224/230 duraration @ .050 lift and .551 lift at the valves.
Intake is a Clifford
carb is a Edelbrock 500cfm
This engine is almost at the max for this carb. Any more rpm and a 600 will
need to be used.
Old sale barn truck belonged to a farmer. Had worn out 250. Replaced
integral smogger with 1968 250.
500 lift cam 260 duration
4 barrel carb and offy intake
Plan on running it at raceway when complete camper shell and all just to
Tri-power Rochester Model BC Chevy 235 Six
This is 3 carb set-up on a Chevy 235 inline Six. This intake is an
Offenhauser for the 235. The carbs are large base Rochester BC's. The
automatic choke is fed from a copper tube heat riser that extends into the
Exhaust heated base. The tube exits
the heated cavity to the atmosphere (does not pick up carbon from the Exhaust). Fuel line is plumbed entirely
in solid brass pipe.
The engine is 1959 vintage 0.60 over with the late high compression heads.
3/4 cam with mild lope can be heard in the video. Exhaust is temporarily fabbed outside the split
Fenton Exhaust manifolds...so sounds a
little odd with my little digital camera. Sounds a lot better in person!
250 chevy inline 6 in 65 Chevelle wagon lump port head
This video was made to show how a street modified inline 6 can run. The cam
and compression are street fuel friendly. Car weighs in at 3600 lbs empty.
2.56 rear gears
Mileage is 20 MPG going 75-80 MPH
I have owned this car since 2004. It sat in the garage waiting for a
purpose. It had a 194 inline and a powerglide trans with 3.08 gears.
In may of 2012 we decided to get it ready to take to the Inliners
International Convention in Carson City Nevada.
The 194 and trans were pulled. The 250 Dyno engine was installed. This
engine was a Dyno mule
to test different cams, heads, intakes and a turbo in my other videos. It has over 120 full
throttle runs put to it on the Dyno. The trans is a Richmond
non overdrive 5 speed. Rear gears were swapped to 2.56 for highway running.
The engine is a 250 Chevy with flat top pistons, balanced lower end, offy
intake. Compression is 9.5 to 1. The head has extensive work. Bolt in lumps
are installed along with 1.94/ 1.6 valves. The head is also ported. Cam is
a Clifford 270 hydraulic. This engine Dynoed at 285 HP with a 4 BBL
and Clifford intake.
The Exhaust consists of Hooker
headers, dual 2.5" collectors merged together into a Magnaflow 3 chamber
muffler, the tailpipe is 2.5".
Since installation the car was driven to Carson City at the end of May
without trouble. And up to this point has been driven 5500 miles.
Checkout my website http://www.12bolt.com/ . There are parts and
information on how to make your inline Chevy perform.
250 Chevy Cleaning.wmv
Here's a 250 cid Chevrolet engine block that was sent in for cleaning and
reconditioning. In this clip you will see how the cam bearings are removed
and the block is thermally cleaned here at Costa Mesa R&D Automotive
Machine. www.engine-machining.com (949) 631-6376
GM 216 Straight Six Blowing Up & Catching on Fire
To all the angry viewers out there, please feel free to post your comments
below and thanks for watching! Blowing up the engine was really fun, and we
would't think twice about doing it again. For all the other viewers who
enjoyed the video, please post your awesome comments below and thanks for
The engine had not run for a number of years and was scrapyard bound so
after sanding down the points and giving it some fuel it ran wide open for
about 10-12 minutes before it threw some rods, the oil caught on fire and
ran out of fuel.
http://youtu.be/mWcMA1zfp64 [A video of the 216 running after sitting for
an unknown number of years]