royal plum hx kingswood, daily drive, 355

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oldskool
Posts: 33
Joined: Fri Aug 27, 2010 8:57 pm
cars: royal plumb hx efi 304, 4l60e, daily drive, soon to be efi 355
fe panel van 450hp 383 chev
fc special, grey motor,
Location: wodonga

Re: royal plum hx kingswood, daily drive, 355

Post by oldskool »

So i used the brace lug on the engine mount for the original ac with a spacer to get me in the ballpark with the belt, using the commodore triple pulley and lined it up with the rear of the three, still using commo p/s bracket too just chopped the a/c part off the bottom of the a/c bracket so the spacing stayed the same, the two curved bracket are original 253-308 alternator adjustment brackets cut to lenght and drilled to fit
Attachments
IMG_20170316_185602.jpg
oldskool
Posts: 33
Joined: Fri Aug 27, 2010 8:57 pm
cars: royal plumb hx efi 304, 4l60e, daily drive, soon to be efi 355
fe panel van 450hp 383 chev
fc special, grey motor,
Location: wodonga

Re: royal plum hx kingswood, daily drive, 355

Post by oldskool »

Then using the vs alternator bracket i flipped the alt up top on its same mounting point and if you can zoom in on this pic you can see where the old cut up 253 alt brackets are mounted and used as spacers
Attachments
IMG_20170316_185618.jpg
oldskool
Posts: 33
Joined: Fri Aug 27, 2010 8:57 pm
cars: royal plumb hx efi 304, 4l60e, daily drive, soon to be efi 355
fe panel van 450hp 383 chev
fc special, grey motor,
Location: wodonga

Re: royal plum hx kingswood, daily drive, 355

Post by oldskool »

And down low here at the front of the block, just a simple tag with a lug welded to the back to hold its position on the block out of 3 mm by 20 (i think, im tired, lol, so its mounted to the compressor on the lower left front and rear lugs and upper right front and rear lugs which the spacers and bolts aren't in the pics
Just for thought too, i have seen the original pump and bracket used on an efi headed, come twin throttle bodied 383 and the bracket bolts to the efi heads but need to swap the efi rocker covers left to right and use a hz triple pulley with the belt for air at the front, just wont work a banana manifold with where the throttle body is
Attachments
IMG_20170316_185632.jpg
Last edited by oldskool on Thu Mar 16, 2017 8:58 pm, edited 1 time in total.
oldskool
Posts: 33
Joined: Fri Aug 27, 2010 8:57 pm
cars: royal plumb hx efi 304, 4l60e, daily drive, soon to be efi 355
fe panel van 450hp 383 chev
fc special, grey motor,
Location: wodonga

Re: royal plum hx kingswood, daily drive, 355

Post by oldskool »

Here's a frightening way to find out you need to check these old factory air setups, just about went up in flames this morning warming it up before work, smoke with a distinct smell of eucalyptus started pouring out the demister vents, disconnected heater fan (runs all the time on low speed with factory air unless completely switched off on the floor, screen, recirc switch) and off to work,
Home tonight pulled the fan and resistor out of the box and wouldnt you know it, full of dry gum leaves upto the resistor coils
Attachments
IMG_20170316_185524_1.jpg
oldskool
Posts: 33
Joined: Fri Aug 27, 2010 8:57 pm
cars: royal plumb hx efi 304, 4l60e, daily drive, soon to be efi 355
fe panel van 450hp 383 chev
fc special, grey motor,
Location: wodonga

Re: royal plum hx kingswood, daily drive, 355

Post by oldskool »

And these suckers get hot
Attachments
IMG_20170316_185534.jpg
MAGP
Posts: 665
Joined: Tue May 10, 2016 5:48 pm
cars: VC V8 sedan, VS V6 wagon, VT V8 Landcruiser.

Re: royal plum hx kingswood, daily drive, 355

Post by MAGP »

Lucky you caught it before a fire started. Eucalypt just keeps burning once it has caught alight.
oldskool
Posts: 33
Joined: Fri Aug 27, 2010 8:57 pm
cars: royal plumb hx efi 304, 4l60e, daily drive, soon to be efi 355
fe panel van 450hp 383 chev
fc special, grey motor,
Location: wodonga

Re: royal plum hx kingswood, daily drive, 355

Post by oldskool »

Here's the results of the teardown on my broken 4l60e, apparently smashing a diff and front uni can cause the low/reverse sprag clutch to crack then break on the first shift, feels like someone yanking on the handbrake as the 1-2 shift occurs, this sprag is supposed to freewheel when in second but when they break like this they sieze
Attachments
IMG_20170329_094552.jpg
oldskool
Posts: 33
Joined: Fri Aug 27, 2010 8:57 pm
cars: royal plumb hx efi 304, 4l60e, daily drive, soon to be efi 355
fe panel van 450hp 383 chev
fc special, grey motor,
Location: wodonga

Re: royal plum hx kingswood, daily drive, 355

Post by oldskool »

Also cracked the rear planet, everything else looked good so with the help of my boss (first tranny rebuild) i added a .500" boost valve to the pump and a corvette servo, firmer springs in the 1-2 and 3-4 accumulator, ready to spend a day under the car for good friday changing the tranny back over
Attachments
IMG_20170329_094621.jpg
oldskool
Posts: 33
Joined: Fri Aug 27, 2010 8:57 pm
cars: royal plumb hx efi 304, 4l60e, daily drive, soon to be efi 355
fe panel van 450hp 383 chev
fc special, grey motor,
Location: wodonga

Re: royal plum hx kingswood, daily drive, 355

Post by oldskool »

Here's a sneek peek at an ice ignition belt driven from cam, distributor with fully ajustable ignition curve for ls1's
Attachments
IMG_20170411_082808.jpg
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