bad crank, maybe goin' stroker

[Jack]

Drat!!! Upon assembly, freshly turned 3.48 crank didn't feel right as I rolled it in the bearings ... I had previously dry-fitted it for plastigage clearance (that was on the money) but did not roll it through at that time. Turns out the idiot machinist damaged-raised the area around #1 main journal's oil hole. I could probably have it polished/ground-out/repaired ... but I think I'll have more in this 10/10 under iron crank than is practical. So ... I think I may go with a new 3.75 or 3.8 cast crank, pink rods (or equivalent) and .110 dished hypereutectic (sp?) pistons (about 9:1 CR w/ my heads & 3.8) ... been kinda hankerin' to do this anyway. I've got what should be an appropriate cam (222/.460) for this street-only driver (not nitrous) '71. BTW, have acquired a different machinist. So ... any thoughts on these choices?
JACK:gap

 

[redmist]

Sounds good but I would go with SCAT rods. They are cheaper, lighter and stronger than the GM product. Don't forget the ARP bolts and don't install a big block oil pump.
Might want to have the crank nitrided as well, nice hard finish.

 

[69MyWay]

Jack,

I had that happen on a Fiero that I was stroking the 2.8 over 3.1 liters. Thank God I checked it all out before putting it in. It would have ended up in the tank.

Nothing like a big cube small block.

 

[Jack]

all thoughts welcomed, add to 'em

SCAT rods. They are cheaper, lighter and stronger than the GM product. Don't forget the ARP bolts and don't install a big block oil pump

Redmist: Just got a deal (less than $75) on set of recon'd, weight-matched pink rods with bushings & ARP bolts (will mag before assembly). Agreed, Scat does make a superior rod! If I do go stroker, I'll probably go Scat 9K crank. I do have a new hi volume & hi pressure SB pump (Dynagear pn DM55-HV) I'm gonna change spring to hi vol only. Hadn't considered BB pump ... curious though ... why not?

Keith: 4.030 & 3.8 = 388

Nothing like a big cube small block

Chris: I kinda sorta agree ... 'cept there's somethin' better ... a BB like yours! Once I get the car sorted, maybe I begin to gather BB stuff ... furthering my expertise in procastination:L.
JACK:gap

 

[redmist]

Can't argue with $75.
The big block pump put tends to wear the distributor gear faster creating some spark scatter. It also steals some hp. High volume regular pressure is the way to go.

 

[Jack]

Crank & rods on the way

A new Scat 3.8" cast crank (under $174 w/ship) and a nice set of pink rods are on the way!! Now for pistons ... I just hope I don't run into the sourcing difficulty Chris is experiencing:eek
JACK:gap