odd ball engine combo

greg fulk · 04-08-2010, 01:01 AM

Ok guys here's what I have...I have a 71 virgin 400 4-bolt main sb chevy. I also have a 68 Lg journal 3.25 stroke crank. What will this make? I know a 3.50 stroke in a 400 block will make a 377 & they run pretty good but have any of you went this way ? I'm just thinking out-loud here.

Mark Yacavone · 04-08-2010, 01:57 AM

346 . In other words, a big bore 327

Tom keedle · 04-08-2010, 07:44 AM

Quote:

Originally Posted by Mark Yacavone

346 . In other words, a big bore 327

or a REALLY big bore 307...

Jeff Lee · 04-08-2010, 06:27 PM

I've always been impressed with the 377, not so with the 383. A 346 like this sounds intriquing...Anything on the down side, other than cubes?

greg fulk · 04-09-2010, 12:27 AM

The only thing I can think of is I think it would like RPM. But I would build it with 6" rods so that wouldn't be a big deal. ( not to upset my S/SS buddies but I'm thinking of this as a 10.90 engine ....something that could leave the line @ like 5800 & shift @ like 8000)

Tom keedle · 04-09-2010, 04:04 AM

how about this for grins, 400 block/302 crank?

04-08-2010, 01:01 AM	#1
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	odd ball engine combo Ok guys here's what I have...I have a 71 virgin 400 4-bolt main sb chevy. I also have a 68 Lg journal 3.25 stroke crank. What will this make? I know a 3.50 stroke in a 400 block will make a 377 & they run pretty good but have any of you went this way ? I'm just thinking out-loud here. __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"

04-08-2010, 01:57 AM	#2
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,821 Likes: 2,915 Liked 5,133 Times in 1,957 Posts	Re: odd ball engine combo 346 . In other words, a big bore 327 __________________ "We are lucky we don't get as much Government as we pay for." Will Rogers

04-08-2010, 06:27 PM	#4
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: odd ball engine combo I've always been impressed with the 377, not so with the 383. A 346 like this sounds intriquing...Anything on the down side, other than cubes? __________________ Jeff Lee 7494 D/S '70 AMX

04-09-2010, 12:27 AM	#5
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	Re: odd ball engine combo The only thing I can think of is I think it would like RPM. But I would build it with 6" rods so that wouldn't be a big deal. ( not to upset my S/SS buddies but I'm thinking of this as a 10.90 engine ....something that could leave the line @ like 5800 & shift @ like 8000) __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"

04-09-2010, 04:04 AM	#6
Tom keedle Senior Member Join Date: Dec 2008 Location: Berthoud, Coloraduh Posts: 695 Likes: 13 Liked 8 Times in 7 Posts	Re: odd ball engine combo how about this for grins, 400 block/302 crank?