Author Topic: 292 with EFI  (Read 4895 times)

Offline motec6.9

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292 with EFI
« on: September 18, 2015, 09:19:11 PM »
Hi as I said in my hi post I have another car being built paint job was completed Friday just need to finish engine and reassemble . Its a South African Chevrolet Kommando Wagon based on the Australian Holden HG sheet metal at front is different plus a few other minor details. Original engine was 250 6. Now to the motor I have bought port lumps for the head on the 292 and had them fitted along with 1.94 inch intake vales and 1.6 inch exhaust valves. I have Comp Cams roller rockers 1.7 ratio. Head has been done and cleaned up flow number is 248Cfm. I have a Comp Cams camshaft 212 degrees duration @ .050 lift .512 lift at valve 110 lobe separation. I have Ross Forged 250 Flat top pistons in 040 oversize weight 488 grams. Molnar billet long rods to use lighter 250 pistons in 7.130 inch length this will lower piston speed and weight. Intake is an Aussie Speed 4 barrel intake. Headers are cast headers from Langdons Stove Bolt and are ceramic coated. I also bought a small cap HEI distributor from Langdons as well. EFI is and MSD Atomic 4 barrel . I received the last off my parts on Friday as well and dropped them at engine builders so should have it together in next week or so then onto dyno to tune. Internal parts were bought from Tom Lowe at 12bolt.com .

Offline LTZ C20

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Re: 292 with EFI
« Reply #1 on: September 19, 2015, 02:09:16 AM »
Ok not gonna lie, that stuff looks sweet! You definitely got some great stuff there, I really liked the intake.
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Offline motec6.9

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Re: 292 with EFI
« Reply #2 on: September 19, 2015, 02:12:12 AM »
Thanks and while getting stuff I found a set off NOS Halibrand sweet swirl rims so I bought them for the wagon.

Offline LTZ C20

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Re: 292 with EFI
« Reply #3 on: September 19, 2015, 02:19:14 AM »
It's it between 5:15 and 5:30 in the afternoon where your at?
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Offline motec6.9

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Re: 292 with EFI
« Reply #4 on: September 19, 2015, 03:45:38 AM »
Yep now 18:45 hours .  :D

Offline LTZ C20

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Re: 292 with EFI
« Reply #5 on: September 19, 2015, 06:38:34 PM »
I would really love to make it back again sometime. I went about 20 years ago to Sydney and where my mom was from but haven't been since.
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Offline frotosride

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Re: 292 with EFI
« Reply #6 on: September 19, 2015, 09:09:29 PM »
I tried to pull in there for a port call but we were always shot down. How strong is the aftermarket down in the deep south. I noticed you use more American lingo then most Aussies I have spoken with... Got roots in the states by chance?
"Beat it like a red-headed ford"
1987 v10 Silverado, 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline motec6.9

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Re: 292 with EFI
« Reply #7 on: September 19, 2015, 10:59:06 PM »
I have been to Kaboom ie Kabul were its a Bombie 1200 degrees.

Offline ehjorten

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Re: 292 with EFI
« Reply #8 on: September 21, 2015, 01:49:58 PM »
I see you have the bolt-in lump port modification to your heads!  Nice!  I have a 292 that I have not completed yet.  I have Propane pistons (the 292 dish in the piston is half the depth of the gas piston) that I have ceramic coated and low-friction coated.  I have custom Crower, tapered H-beam rods for it and the lighter-weight forged crank.  I also have the 4-bbl aluminum intake and Jet-hot coated, full-length, Tri-Y headers.  I still have to do the head modifications for the lump-port.
-Erik-
1991 V3500 - Gen V TBI 454, 4L80E, NP205, 14 bolt FF, D60, 8" Lift on 35s
1977 K20 Silverado - 350, THM350, NP203, 14 bolt FF, D44, Stock Lift on 31s
1969 Chevelle Malibu Sport Coupe - EFI350, THM350
1968 Chevrolet Step-side Pickup - 300HP L6

Offline motec6.9

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Re: 292 with EFI
« Reply #9 on: September 22, 2015, 12:03:22 PM »
It will be tuned on the dyno for the MSD Atomic EFI so I will let you know the results.

Offline Captkaos

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Re: 292 with EFI
« Reply #10 on: September 22, 2015, 01:57:54 PM »
please do!  I held onto a 292 for a while and wanted to build it but I got bit by the LS bug and let all my non LS stuff go.
I planned to turbo and EFI mine, but....

Offline motec6.9

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Re: 292 with EFI
« Reply #11 on: September 24, 2015, 09:40:26 AM »
Engine builder advised engine should be finished on Friday so will not be long till a can start tuning it.

Offline motec6.9

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Re: 292 with EFI
« Reply #12 on: September 25, 2015, 01:48:02 AM »
Well the engine is completed it will be fitted to the Wagon on Monday and then put on the dyno.

Offline frotosride

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Re: 292 with EFI
« Reply #13 on: September 25, 2015, 11:06:17 AM »
Looking good... the only thing that may give away that it's not a stock rebuild is the 110 LSA. Bet it's gonna sound good!
"Beat it like a red-headed ford"
1987 v10 Silverado, 87 R10,83 K20, 83 cucv 6.2 Detroit
2006 Boulevard M109R 109 cid,2019 M109R BOSS
2009 Jeep XK, (future LS Swap)
GSXR 750 engine awaiting go kart

Offline motec6.9

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Re: 292 with EFI
« Reply #14 on: April 19, 2016, 01:08:35 AM »
Well the 292 was fired up today with the MSD Atomic efi wiring still to be tidied up and dyno tune to be done . https://www.youtube.com/watch?v=vk74BBsQF6M&feature=youtu.be