View Full Version : quick 69 BBC ?


66SS427
06-30-2008, 10:19 AM
69 BBC have long or short water pump? open or closed champer heads? I found a decent 69 custom cpe body to drop my BBC /T400 into and curious.

66SS427
06-30-2008, 11:33 AM
Answered one queston myself. Only one head was open chambered - alum square port, standard was still cast iron oval closed chamber heads. Still not sure about the water pump.

396427BISCAYNE
06-30-2008, 01:12 PM
mike,
'69 was the 1st year for the long water pump, big and small blocks. :beers:

66SS427
06-30-2008, 02:22 PM
Figures :rolleyes: I bought an alum HV short pump, chrome pulleys and matching chrome alt brackets for my motor. :( I still have the long pump stock stuff though the pump should be replaced.

Big Dave
06-30-2008, 10:52 PM
Short pump will work if you have everything (everything includes pulleys and all brackets for the accessories). The accessories swapped sides when they changed from short to long so wires and things like A/C hoses may be a problem swapping over to a short pump.

The mixed heads will cause problems with differences in compression. A matched set of something is better than what you have. Post the casting numbers of the iron head to learn which one you have. As far as the rectangular port aluminum head it is one of three different castings as well. So post those numbers as well and we can tell you were to look for a mate.

Big Dave

66SS427
07-01-2008, 11:53 AM
I have all the brackets in chrome except the short pwr steering stuff for a short pump and all of the long pump stuff. Also, I have a pr of 049 head's for it now,I messed up and put it wrong. One head used in 1969 had open chambers, the rest were closed chambers. is what I meant sorry. but want to go to a small chamber head like a 215 to bump up the compression on a more or less warmed slighly over stock 460 BBC.
here is the combo-
1973 454 2bolt .030 w main studs
Felporo gaskets
Steel .010/.010 7416 crank tufttrided w chamfered oil holes
windage tray
Clevite 77 bearings
KB 202-030 Hypertecs .030, 8.2 comp.( I am locked in financially so a piston change is out of the question)
Speedpro Plasmamoly rings
3/8" "Thumb" rods
ARP 3/8 rod bolts
Clevite 77 bearings
blueprinted Melling stock oil pump w welded PU
whole assembly custom balanced
(bottom end is overkill, but work and parts were started B4 a change in plan)
1973 "049" cyl heads (118cc???) w basic three angle valve job, PC seals + port matched to Felpro gasket, .010 clean up shave.
Speedpro cam specs-

Basic Operating RPM Range:Idle-6,000
Intake Duration at 050 inch Lift:214/Exhaust Duration at 050 inch Lift:224
Duration at 050 inch Lift:214 int./224 exh.
Advertised Intake Duration:292
Advertised Exhaust Duration:302
Advertised Duration:292 int./302 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:0.502 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:0.527 in.
Valve Lift with Factory Rocker Arm Ratio:0.502 int./0.527 exh. lift
Lobe Separation (degrees):112
Intake Valve Lash:0.000 in.Exhaust Valve Lash:0.000 in.
recommended Speedpro lifters and springs
Comp cams chrome moly 5/16 hardened pushrods (like to go to 3/8 Chrome moly w 3/8 guide plates)
Crane long slot rockers w grooved balls + nuts all new (like to go to 7/16 1.7 rollers)
Clevite 77 cam bearings
Cloyes True roller Timing set
recurved stock 396 cast iron dizzy w a crane electronic conversion, Bronze gear (It has a built in rev limiter that will be set at 5000 rpm) I have used these B4 w good results.
Flamethrower nickle plated coil
Taylor SpiroPro 8MM red Ign. wires
Weiand Excellerator single plane (pre Team G X style intake, GREAT street intake from my experiance)
1" spacer If I need/want it.
750 Edelbrock (I know, but I cannot afford an 850 Holley at the moment)
Holley "Blue" fuel pump
Holley 4-7# regulator
HV Alum short water pump
Chrome pulleys, engine coil ,accelerator brackets,timing cover, VC's ,PolyUre. front mounts etc...
Hedman 3/4" full length street headers
Flowmaster 50's w full length 3" exaust
T400 w shift kit,Hays SFI external balance flexplate, 1800 -2000 stall converter, deep pan, external cooler, PolyUre. rear mount

For a big car (3740#) I think this is close to right. Improvements? oh yah ,There are several areas that could be bumped up for higher HP/Power sure ,but as of right now this is a mild street motor that will never even see a drag strip except from a parking lot. Get gas anywhere, start everytime and pull my 3000# boat w ease W/O heating up, PLUS have some cruise/stop light fun in a neat older car.
Plenty of time to change more later if I so choose if I do the bottom end right.

427SS65
07-02-2008, 12:55 AM
Long!

66SS427
07-02-2008, 03:12 AM
The post or the car? Both? ;) I REALLY want a 65-68 fastback or cpe. but w a VERY limited budget and MN salt my choices are limited. Considering a 65-6 SS Imp. w BBC weighs in at 3538# and 119" WB to my 3735# w a BBC on the same 119" WB. The 69 only LOOKS longer because of more body over hang F+R actually. Performance given all things mechanicaly equal should be simular.
IF I can believe the Desktop Dyno and Comp Cams cam programs (which I do not most of the time), It shows Max HP 422HP @ 5500 RPM and Max torque is 455 @ 4500 Rpm, but that is w lrg tube headers w mufflers and a 850 carb. My goal is 450 HP @ 5500or less RPM ,but with the limited compression + no funny gas its pretty hard to do.