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efi-diy Offline OP
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For the few of you that want to do the 4200 swap, using your existing automatic (note the bellhousing adapter will work for a std transmission bell as well) all the parts are available to do so

-Bell housing adapter - this adapts the 4200 bolt pattern to the 194/292/SBC/BBC bell housing pattern - 3/8" plate - laser cut and CNC machined - adapter to 4200 block bolts included

- Torque convertor spacer to take up the thickness of the spacer and provide correct support for the t/c hub. Supplied with correct bolts

- extra long dowel pins





Last edited by efi-diy; 01/25/14 02:38 AM.

51 GMC 4.2 turbo
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EFI,
Glad to see you making these parts.
All my 250 and 292 engine come from the factory with that built in. How is that for a rub?


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65 Chevelle Wagon and 41 Hudson Pickup
Information and parts www.12bolt.com

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That looks good. I hope it helps generate interest among the more traditional set.


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Thank you for making that part. I own an 07 Trailblazer and know how good 4200 engines are. Out into the future a few years I would like to try one in the Nova that I have. Jay 6155

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efi-diy Offline OP
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 Originally Posted By: tlowe #1716
EFI,
Glad to see you making these parts.
All my 250 and 292 engine come from the factory with that built in. How is that for a rub?


true... but they don't make 275HP/291 SAE NET with no mods now do they...

\:\/


Look at Danny's 3rd gen camaro install - stock engine + turbo... == 500 hp....

Last edited by efi-diy; 01/25/14 10:52 PM.

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I am one of the converts, swap out the old style 6 for the new style.

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Set all your 302s by the curb and I'll pick them up. \:\)


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Beater, I am going to sell off my 302 and all extra parts, blower and turbo pieces. email or call at garyhartracing@yahoo.com 417-830-1504

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Beater, I am going to sell off my 302 and all extra parts, blower and turbo pieces. email or call at garyhartracing@yahoo.com 417-830-1504

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Beater, I am going to sell off my 302 and all extra parts, blower and turbo pieces. email or call at garyhartracing@yahoo.com 417-830-1504

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Gary I would really be interested if I had some money. Unfortunately that's not the case. I will let some of my serious 302 friends know. They let me play with them at Bonneville. The 4200 group at our local Chapter meeting yesterday has grown to 6 and two of them are working on their 2nd projects.


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I tried to post a photo with the last post, had troubles, I guess that's why it came through 3 times. Sorry

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efi-diy Offline OP
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I will be getting another batch of block adapter cut within weeks if anyone want one speak up. On another note the crank hub adapters to mate a non vortec GM automatic (PG/TH200/350/400/700) will be ready by mid next week baring any more delays at the machine shop.

The extra long dowel pins are ready and in stock.


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This is a bit redundant Marc, but put me down for all of the above AND a new rear sump pan. Murray

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ok


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Looking for 1 more person that needs a spacer....


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Marc, you know I still will need an adapter plate to replace Sumners that he loaned me.

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Yes. Need qty 3 before I can order them otherwise the cost per goes up a lot. Setup costs.


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He is in no hurry, so we can wait. Just let me know when you get it.


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