4.3 V6 and 5.7L Diesel

[fleming442]

My score for the year. An elderly fellow had 3 D blocks and 1 DX block for sale.
Snagged them all up.
Yes the 5.7 is very problematic, seen some motors with turbos installed. Apparently it helps alot with them.
From my understanding the difference between the 2, the mains are beefier in the DX and also has .921 lifters.
But...... if you want to make killer hp, stroke ones of these babies. They have 3 inch mains, many use a 425 crank in them. I know a gentleman that builds custom cranks for these builds. Also apparently you can bore these way over



View attachment 163996

They can go 385-440 easy.

 

[Kelvin's80442]

They can go 385-440 easy.

As in over size? If that's what you are implying, builder told me as far to 468.

 

[fleming442]

As in over size? If that's what you are implying, builder told me as far to 468.

I've never seen one that big

 

[Kelvin's80442]

I've never seen one that big

Lol.
If I remember correctly on size, Mark R is where I received the information from. But I could be wrong too. Lol

 

[superbon54]

As in over size? If that's what you are implying, builder told me as far to 468.

 

[fleming442]

As in over size? If that's what you are implying, builder told me as far to 468.

I was talking cubic inches (385-440), not overbore (.385-.440").

 

[84dragcutlass]

6.5 in a g-body supreme? you'd have to basically whallo out the whole eng bay for it to fit. Huge engines. I remember seeing a video YRs ago of a guy putting a 6.2 in a Malibu and he mentioned having to literally cut out and remove everything along with sections of the firewall. The eng alone w/o accessories & DRY weighs 770. I know several of my Red block (1982 only) 6.2s weighs at least 700 alone, With accessories around 960. My father had a 1998 1-Ton with the TD 6.5 and it was about 1100.

Check out my build thread, havent cut a thing

 

[Texas82GP]

Check out my build thread, havent cut a thing

You need a link to your build thread in your sig.

 

[L92 OLDS]

If anyone is interested I have access to 4 DX blocks and a nice, running cutlass supreme with a 350 diesel in it

 

[84dragcutlass]

If anyone is interested I have access to 4 DX blocks and a nice, running cutlass supreme with a 350 diesel in it

PM sent