Diesel Bombers - 6.2 heads vs. 6.5 heads

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- Chevy/GMC 6.2L and 6.5L (https://www.dieselbombers.com/chevy-gmc-6-2l-6-5l/)

- - 6.2 heads vs. 6.5 heads (https://www.dieselbombers.com/chevy-gmc-6-2l-6-5l/19143-6-2-heads-vs-6-5-heads.html)

both of the blocks are junk......those engines make really good boat anchors.....leave it fairly stock or your gonna shoot the crank out the bottom of the block......

Quote:

Originally Posted by SPEAKSUP (Post 248816)

HAHA Yeah the are. If you checked the last Diesel Power Mag they had the .5 with Sequential Twins that is using Ported 6.2 Heads So goes to show yo that 6.2 is the better way to go. Next thing to worry about is the 6.5 block it's not exactly the strongest. :argh:

Quote:

Originally Posted by LOGANSTANFORTH (Post 248926)

both of the blocks are junk......those engines make really good boat anchors.....leave it fairly stock or your gonna shoot the crank out the bottom of the block......

so ive heard. which was why im blueprinting it, i.e. my hopes is itll fight itself a bit less. and i could leave it stock...but wheres the fun in that?:booo: besides, being most folks agree with you that they are boat anchors, i got 1 6.5 and 2 6.2's for free

Quote:

Originally Posted by Patches (Post 248928)

well id proably ruin them if i tried to port them...but thats what machinist friends are for, right?:c: ive heard the newer the block the better...true, not true? the best ive come up with so far, is ARP main studs, head studs, and rod bolts.:argh:

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so ive heard. which was why im blueprinting it, i.e. my hopes is itll fight itself a bit less. and i could leave it stock...but wheres the fun in that?:booo: besides, being most folks agree with you that they are boat anchors, i got 1 6.5 and 2 6.2's for free

sweet...that should be enough weight to keep a good size boat from drifting off.......

I have no idea who makes them but they make a whole new 6.5 6.2 block that doesn't crack and you can get the whole short block for like 3 grand Means New Crank New Rods New Pistons Cam and Gear. Ill look it up see if I can find it again.

Quote:

Originally Posted by SPEAKSUP (Post 248978)

sweet, thanks. granted thats 3k more than i have now...but that gives me time to blow a couple of these up and get a job

i know a guy that has 10 rebuilt 6.2's setting in crates at 300 a piece........rebuilt at Fort Polk in Louisiana.......THE best army rebuild shop......comes with injection pumps and lines......

heck for 3 grand you can put a p-pumped cummins in it and never look back, allthough my first diesel was a 83 chevy 4x4 4 speed and i put a full banks turbo kit and rigged in an intercooler and WOW!!! what a differance well worth the money, truck is still running w/ over 300k and trust me as a rodeo wagon it has had no easy life, :U: it still pulls its weight as a back up wagon,

Quote:

Originally Posted by LOGANSTANFORTH (Post 249819)

i know a guy that has 10 rebuilt 6.2's setting in crates at 300 a piece........rebuilt at Fort Polk in Louisiana.......THE best army rebuild shop......comes with injection pumps and lines......

thats not a bad price at all, but i want to build the engine myself. then when the block breaks and throws the crank, ill be like "hell yea, i built that" lol

6.2 heads also have tighter chambers (more compression) since they were a naturally aspirated engine! Also DSG makes a stud girdle kit for these engines (DSG 65SG-12mm) that dramatically reduces the chance of lower block failure!

I realized this is a old thread,but does anyone have the part numbers for the arp main studs and rod bolts for the 6.2 diesel?I'm rebuilding a 6.2 and I would like to have the part numbers for the arp fasteners if this is possible.I see that Patches has used the arp fasteners so if anyone can help,i'd surely appreciate it.

Thanks.