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My 1984 Gmc Stepside Project


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#21 jason777

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Posted 29 August 2011 - 06:15 PM

Alright, I ordered my rebuild kit from Summit Racing.

http://www.google.co...uiv-CTA&cad=rja

It included flat top pistons. I also ordered a cam and lifter kit (Duration 262/272, Lift .420/.442). It's not a big cam, but it will give me more HP than stock. You can either have a cam that will give you more top end HP or a cam that will give you quick acceleration at lower RPM's; Since my truck is a daily driver I want a lower duration and rise cam.

I may have a neighbor help with assembly this weekend and have it all together. :)



Enjoy.

#22 jason777

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Posted 05 September 2011 - 02:40 PM

I got my rebuild kit in and started the assembly. Fortunately, everything was the right size. :P

Piston skirt dia.-4.038"

Cylinder bore-4.041"

Main bearing clearance-0.001"

Rod bearing clearance-0.001"

Here's the front end showing cam button.

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Here's the fully assembled bottom end painted.

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Here's the timing cover and oil pan after painting.

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I have to order a crankshaft socket so I can turn the crank over to top dead center and measure the deck height. If it's zero, then I can use the stock .041" head gaskets that came with the rebuild kit. The heads were surfaced and that should put my total quench to ~.035", which would be perfect.



Enjoy.

#23 jason777

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Posted 18 September 2011 - 01:56 PM

I got my steel shim head gaskets in this weekend, so I decided to work between rain storms to get the heads on.

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I used Fel Pro .016" head gaskets and coated the deck with Permatex copper gasket spray. The head bolts are brand new and I put an extra 1/8 turn on them with a 1/2" breaker bar after torquing them to 70 ft. lbs. I'm looking for a specific amount of bolt stretch rather than torque lbs.; The extra stretch will keep the heads tight and sealed after the engine gets hot and the bolt holes expand causing the head bolts to slightly loosen.

My compression ratio with these head gaskets will be 9.56:1, which will give me plenty of power and able to run on pump gas. B)





Enjoy.

#24 jason777

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Posted 25 September 2011 - 02:03 PM

It was a great weekend, so I had plenty of time to get my lifters and pushrods in.

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The first method I used to adjust the valves didn't work, so I went back and adjusted them with a different method and got the proper lash the second time.



Enjoy.

#25 jason777

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Posted 30 October 2011 - 02:17 PM

I'm ready to begin the engine swap next weekend. I installed the new chrome dipstick and put a chrome hugger header on to give you an idea of how it will look.

Posted Image



Enjoy.

#26 Ron

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Posted 02 November 2011 - 07:16 AM

I'm ready to begin the engine swap next weekend. I installed the new chrome dipstick and put a chrome hugger header on to give you an idea of how it will look.

Posted Image



Enjoy.


Sweet! B)

#27 jason777

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Posted 06 November 2011 - 03:36 PM

Thanks, Ron. Sadly, the hugger headers wont work with my drivers side motor mount and the stock exhaust manifold off of my old 305 engine is blocking the oil dipstick hole. I'll have to order some long tube headers from summit or find a used set locally.

The good news is: The new engine is swapped and nearly complete - just waiting to find the right sized belts and headers.


Enjoy.

#28 jason777

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Posted 12 November 2011 - 09:26 AM

I had over tightened valve lash on cylinder #1. I backed both rocker stud nuts off a quarter of a turn and got the engine fired up. It sounded great, but I'm having problems with the stock starter; It just doesn't have enough torque to turn over a high compression engine, so I'll likely have to order a mini starter from Summit.

http://www.google.co...euVcO-LN1ppFRIw

I'll post some pics. later.



Enjoy.

#29 jason777

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Posted 12 November 2011 - 03:51 PM

Posted Image


I was going to paint the headers, but the high temp. paint always peels away.


Posted Image



Enjoy.

#30 Bmaxdlux

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Posted 27 November 2016 - 12:57 PM

Nice truck.

But I think I'll stick with my toy.



http://s6.photobucke...155000.jpg.html




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