302 Chevrolet Engine 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, 10:06 PM

Quote:

Originally Posted by Casey Miles

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

My build is a 1967 302, which did use a 657 2 bolt block as I have, my heads are also 462s the only difference between my block and an original 302 block is the code on the deck. I did sonic ck my block after cleaning, I think it will be ok, hoping for 400 HP on the dyno.

MIKE JONES 302 · 08-15-2018, 10:28 PM

Pictures of rods. I will balance them next.

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?

MIKE JONES 302 · 08-15-2018, 11:27 PM

Setting up for the line hone.

Nmbr1GMfan · 08-15-2018, 11:35 PM

Nice progress.

killintime6968 · 08-17-2018, 10:50 PM

Are you building for street or strip ? Higher quality rods would be a good idea. I have spun my Original 69 Z28/RS to 7200rpm on many occasions, but that is playing with fire. On one of my 302 engines in my Super Stock car I have spun it too well over 9000.

08-14-2018, 01:43 PM	#1
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	#2
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 2,002 Likes: 64 Liked 783 Times in 195 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	#3
larrylomascolo Member Join Date: Nov 2008 Location: Ontario,canada Posts: 442 Likes: 71 Liked 77 Times in 31 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	#4
Casey Miles Senior Member Join Date: Jun 2006 Posts: 706 Likes: 128 Liked 508 Times in 92 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

08-15-2018, 10:28 PM	#6
MIKE JONES 302 Junior Member Join Date: Aug 2018 Location: Colorado Springs Colorado Posts: 28 Likes: 2 Liked 85 Times in 15 Posts	Re: 302 Chevrolet Engine Build Pictures of rods. I will balance them next. Attached Thumbnails Last edited by MIKE JONES 302; 08-15-2018 at 10:40 PM.

08-15-2018, 11:27 PM	#8
MIKE JONES 302 Junior Member Join Date: Aug 2018 Location: Colorado Springs Colorado Posts: 28 Likes: 2 Liked 85 Times in 15 Posts	Re: 302 Chevrolet Engine Build Setting up for the line hone. Attached Thumbnails

08-15-2018, 11:35 PM	#9
Nmbr1GMfan VIP Member Join Date: Aug 2013 Posts: 1,763 Likes: 1,197 Liked 1,955 Times in 492 Posts	Re: 302 Chevrolet Engine Build Nice progress. __________________ Todd Greene

08-17-2018, 10:50 PM	#10
killintime6968 Member Join Date: Oct 2009 Location: Whitecourt,Alberta,Canada Posts: 236 Likes: 4,708 Liked 91 Times in 29 Posts	Re: 302 Chevrolet Engine Build Are you building for street or strip ? Higher quality rods would be a good idea. I have spun my Original 69 Z28/RS to 7200rpm on many occasions, but that is playing with fire. On one of my 302 engines in my Super Stock car I have spun it too well over 9000. __________________ Bruce Cameron 68 Nova 396 E/S 68 Camaro SS/? ex Checkmate Modified