Corral

Carbuff91 · 07-13-2007, 08:28 AM

Hey all,
Do you have to notch the block for a 331 stroker? And for the 347 where do you need to notch the block at? Which cyclinders, all of them or just specific ones?
Thanks,
Steve

Silver 93 Coupe · 07-13-2007, 08:44 AM

My 331 is notched in all the cylinder holes at about the center of them.

Its not much just about the size of my thumb maybe.

boss 331 · 07-13-2007, 07:46 PM

I didn't have to notch mine for clearance, but I did it anyway to be on the safe side.

jibbers93gt · 07-13-2007, 08:06 PM

Mine is not notched.

jonnyk · 07-14-2007, 12:40 AM

No notching here either. It will depend on which rods you have in it. Mine were close on the bottom of the cylinder walls but had "sufficient" clearance. A bigger H beam might have needed grinding.

strokeme · 07-14-2007, 12:47 AM

just do a mock up, .065 thou clearance is minimum between rod bolt and cylinder

TrickRacer50 · 07-14-2007, 03:19 AM

Not all blocks need to be clearanced, so you have to mock your block up to know for sure.

Kato Engineering · 07-14-2007, 03:26 AM

put it together with no piston rings ...but with LOTS of THICK assembly LUBE on the bearing inserts....
and see what you GOT.....

dan89lx · 07-14-2007, 12:35 PM

This picture might help. Its a 347, but you'll get the idea if you end up needing to grind a little.

07-13-2007, 08:28 AM	#1
Carbuff91 Registered User Trader Feedback: (10) Join Date: Mar 2000 Location: Glen Burnie, MD, USA Posts: 1,614	Do you have to notch block for a 331? Hey all, Do you have to notch the block for a 331 stroker? And for the 347 where do you need to notch the block at? Which cyclinders, all of them or just specific ones? Thanks, Steve __________________ 91 GT 302 *SOLD* 2006 GT, Hellion Turbo, TCI Automatic, etc, etc, etc...best 10.97 @ 127.

07-13-2007, 07:46 PM	#3
boss 331 Registered User Trader Feedback: (4) Join Date: Jan 2007 Location: Mt. Juliet, TN Posts: 281	I didn't have to notch mine for clearance, but I did it anyway to be on the safe side. __________________ 88 block, CHP 331 street fighter , AFR 185s, 1.6 RRs, FTI cam, RPM II intake, 70mm TB, 75mm MAF, Diablo custom tune Revolution chip, 3.73s, Viper T-56,Eibach pro-kit, bilsteins, hotchkis CC plates, UPR double adj uppers, UPR adj lowers, Polished Cobra brakes

07-14-2007, 12:40 AM	#5
jonnyk Registered User Trader Feedback: (0) Join Date: May 2000 Location: Alberta, Canada Posts: 698	No notching here either. It will depend on which rods you have in it. Mine were close on the bottom of the cylinder walls but had "sufficient" clearance. A bigger H beam might have needed grinding. __________________ '91 hatch Novi 2000 blown 331

07-14-2007, 12:47 AM	#6
strokeme Authorized corral.net Advertiser Trader Feedback: (13) Join Date: Nov 2006 Location: Chicago IL Posts: 7,989	just do a mock up, .065 thou clearance is minimum between rod bolt and cylinder __________________ Yes I am "Woody", Yes I am the Owner. 110% QUALITY Driven! 630-462-3978 Shop Direct 877-723-5487 Shop Toll-Free TONS of Build Photos Ck at Facebook Make sure to sign up for SBFBuilding.com The single most exciting thing to happen to the small block ford community in a LONG TIME.

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07-13-2007, 08:44 AM	#2
Silver 93 Coupe Registered User Trader Feedback: (35) Join Date: May 2001 Location: High Point NC USA Posts: 1,383	My 331 is notched in all the cylinder holes at about the center of them. Its not much just about the size of my thumb maybe.

07-13-2007, 08:06 PM	#4
jibbers93gt Registered User Trader Feedback: (7) Join Date: Jun 2002 Location: Evansville, IN Posts: 490	Mine is not notched.

07-14-2007, 03:26 AM	#8
Kato Engineering Registered User Trader Feedback: (0) Join Date: Oct 2003 Location: Devore Hts, Calif...FIRE COUNTRY Posts: 17,857	put it together with no piston rings ...but with LOTS of THICK assembly LUBE on the bearing inserts.... and see what you GOT.....

07-14-2007, 12:35 PM	#9
dan89lx Registered User Trader Feedback: (7) Join Date: Sep 2002 Location: California Posts: 516	This picture might help. Its a 347, but you'll get the idea if you end up needing to grind a little.