302 Chevrolet Engine Build

MIKE JONES 302 · 08-13-2018, 10:03 PM

I've always been fascinated by first generation Z/28s, which brings me to my first engine rebuild, a 1966 October 657 casting block with matching 462 casting heads. I will post pictures as I go along. The first pictures show the core cleaned along with the block prepped for machine work which I will start this coming week.

Dwight Southerland · 08-14-2018, 07:48 AM

Is this a restoration type project?

MIKE JONES 302 · 08-14-2018, 09:45 AM

Quote:

Originally Posted by Dwight Southerland

Is this a restoration type project?

No it will be dyno tested then put on a cradle until I get a car. The machine work starts today.

Nmbr1GMfan · 08-14-2018, 11:14 AM

Very cool build.

08-14-2018, 01:43 PM

I have a fresh lg journal 302 crank for sale if you need it. Just balance and go. PM me if interested

Dwight Southerland · 08-14-2018, 03:14 PM

If you are building a race motor, you probably should consider different rods.

larrylomascolo · 08-15-2018, 02:31 PM

I would take Dwight advice, they make some nice aftermarket rods and N.H.R.A. approved list.it all depends how much H.P ,lot of variables

Casey Miles · 08-15-2018, 07:50 PM

Why are you starting with a 2 bolt main block, 302 came with 4 bolt? The original blocks where 618 castings in '69. I'm not questioning your build, just pointing out different items, but in 1966 maybe they used 2 bolt blocks.
Also, if you are using an older block be sure to test the walls for pin holes. I personally got burned by the pin holes twice.
Casey Miles
69 Z/28

MIKE JONES 302 · 08-15-2018, 09:50 PM

Quote:

Originally Posted by Todd Hoven

I have a fresh lg journal 302 crank for sale if you need it. Just balance and go. PM me if interested

Thanks, but I have a crank. I will have it ground and indexed, and the stroke will be set at 3".

MIKE JONES 302 · 08-15-2018, 10:02 PM

Quote:

Originally Posted by larrylomascolo

I would take Dwight advice, they make some nice aftermarket rods and N.H.R.A. approved list.it all depends how much H.P ,lot of variables

This is my first over haul, I hope to race, but I will keep the RPM around 7000 RPM, I will be running a light piston with a low drag ring pack. There was a guy that came around my Dads shop that bought a new 1967 Z/28, he said he buried the tach every day-anyone else ever heard this story?

08-13-2018, 10:03 PM	#1
MIKE JONES 302 Junior Member Join Date: Aug 2018 Location: Colorado Springs Colorado Posts: 28 Likes: 2 Liked 85 Times in 15 Posts	302 Chevrolet Engine Build I've always been fascinated by first generation Z/28s, which brings me to my first engine rebuild, a 1966 October 657 casting block with matching 462 casting heads. I will post pictures as I go along. The first pictures show the core cleaned along with the block prepped for machine work which I will start this coming week. Attached Thumbnails Last edited by MIKE JONES 302; 08-13-2018 at 10:35 PM.

08-14-2018, 07:48 AM	#2
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 1,999 Likes: 63 Liked 772 Times in 192 Posts	Re: 302 Chevrolet Engine Build Is this a restoration type project? __________________

08-14-2018, 11:14 AM	#4
Nmbr1GMfan VIP Member Join Date: Aug 2013 Posts: 1,763 Likes: 1,197 Liked 1,954 Times in 491 Posts	Re: 302 Chevrolet Engine Build Very cool build. __________________ Todd Greene

08-14-2018, 01:43 PM	#5
Todd Hoven Guest Posts: n/a	Re: 302 Chevrolet Engine Build I have a fresh lg journal 302 crank for sale if you need it. Just balance and go. PM me if interested

08-14-2018, 03:14 PM	#6
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 1,999 Likes: 63 Liked 772 Times in 192 Posts	Re: 302 Chevrolet Engine Build If you are building a race motor, you probably should consider different rods. __________________

08-15-2018, 02:31 PM	#7
larrylomascolo Member Join Date: Nov 2008 Location: Ontario,canada Posts: 440 Likes: 70 Liked 66 Times in 29 Posts	Re: 302 Chevrolet Engine Build I would take Dwight advice, they make some nice aftermarket rods and N.H.R.A. approved list.it all depends how much H.P ,lot of variables

08-15-2018, 07:50 PM	#8
Casey Miles Senior Member Join Date: Jun 2006 Posts: 702 Likes: 125 Liked 488 Times in 90 Posts	Re: 302 Chevrolet Engine Build Why are you starting with a 2 bolt main block, 302 came with 4 bolt? The original blocks where 618 castings in '69. I'm not questioning your build, just pointing out different items, but in 1966 maybe they used 2 bolt blocks. Also, if you are using an older block be sure to test the walls for pin holes. I personally got burned by the pin holes twice. Casey Miles 69 Z/28 Last edited by Casey Miles; 08-15-2018 at 07:58 PM. Reason: more info