Did I ruin this block?

Quote:

---

well it's more of a dent than a chip. I'm thinking if I used a stroker crank with 440 mains that would machine out....btw its a 400 block.

---

I would not enlarge the main bearing tunnel I have the mains turned down to on the RB cranks to 361-400 sizes Same thing on the rods, I either order the crank with BB Chevy rod sizes and B motor mains, I maybe going to smaller rod sizes in the future on offset grinding used cranks for more stroke In all seriuoness, don't make the main bearing bores larger,it weakens the main webbing Keep them stock and replace the stock cast iron caps, have the new caps fiited and align honed and use main studs

Quote:

---

I would recommend that you use a file that is long enought to keep the file on the #4 saddle while filing the #5 saddle flat

---

Quote:

---

Quote:

---

I would recommend that you use a file that is long enought to keep the file on the #4 saddle while filing the #5 saddle flat

---

X2
I would have the shop breath on the main line with the hone also.

---

I wouldnt waste my time... if he wasnt planning on honing
the mains ... just file it ... the cap surface I
would lay the file flat on the main to get it flat
(touch the high spot first till close) then in the
bearing surface touch the high spot till close then
lay the file on the whole bearing surface to make
sure its straight and flat... sure a machine shop
might say it should be line honed but thats what
they sell... I did this on one of my blocks and hit
it with a fine file... its still turning 8200 rpms
for the last 8 years... JMO