Sold my engine 10 weeks ago and finally could rebuild the small block I had bought a year ago.
1970 Short block 3970010 casting, bored over .030 and honed
14101083 heads with 64cc chambers for some extra compression
Comp Cams XE250H-10 camshaft
Sealed power Pistons H345DCP30
Cloyes double roller chain 9-3500TX9
Edelbrock Torker II intake
600cfm throttle plate with IMPCO 425 propane mixer
CB Performance Black Box (fully programmable ignition system)
new oil pump
replaced the v-belts with a 93 C1500 serp-system
finally finished my build and got around to starting the engine...
dont mind my Dutch comment
http://youtu.be/bH2MqekWXi4
after breakin in the engine for over 20min. I tried driving it. It had absolutely no power at more then 5% of the throttle and vacuum dropped allmost immediately when increasing throttle. Vacuum at idle was just a poor 10-12inches.
after some research, pulling the intake and watching the valves while turning the balancer I found out I had the camshaft wrongly aligned
there is a inner and outer ZERO on the small sprocket. I aligned it using the inner ZERO....dooohhhhhhhh!!!!
see where it is about 20-30 degrees out of alignment
this is correctly aligned
started the engine again and idle was at 18 inches of vacuum and idle quality was very smooth
http://youtu.be/iQVNYHc4s2g
at first I used a gasket without a exhaust crossover, but the exhaust just blew right through:
so searched a little online and found a guy that had stuffed the crossover in the intake with aluminium foil and cut some blocking plates from a tin can.
drove it for over 100 miles now and the intake has not changed a bit in color. Guess the block off is working
final assembly
with air filter on
without
and pictures of the bare engine
first mileage I got was 1:4,16 driving 100 kph over 100 miles
previous engine with performer cam from Edelbrock and dual plane intake got us only 1:3
I did notice the engine gets pretty warm on 100kph speed....105-110C
added my 5HP stickers from CB Performance and Comp Cams ofcourse
will report back here....but so far, so good!
oh and a nice pic with my dogs
