Aftermarket Blocks

RedSuperRanger23 · 12-22-2011, 10:52 PM

World Man o' War, Dart, Boss or other aftermatket block that I've forgot... discuss. I'm planning on a 351W based build.

BLOWN95GT · 12-23-2011, 06:46 AM

What kind of power range are you looking for?
Are you wanting to run n/a, nitrous, supercharger, turbo?

RedSuperRanger23 · 12-23-2011, 09:23 AM

Im not sure on the power range just yet, but Id like to.do a single turbo setup. The main reason for using an aftermarket block is the ability to go to a 4.125 bore without blinking and still have some meat left to spare.

BLOWN95GT · 12-23-2011, 09:36 AM

Just figured I'd ask. A lot of people on the turbo forums are running stock 351w block's and over 800rwhp hopefully mine will be close to that. But a aftermarket block is good for piece of mind! And since your thinking of going turbo talk to Matt (coupe) on here, and Reed at WORK TURBOCHARGERS www.workturbochargers.com they really know their shit and can help you a lot.

RedSuperRanger23 · 12-23-2011, 09:48 AM

Yeah, piece of mind and overbuilding is probably gonna be the name of this game. Id really like this to be the first and last engine I build for this car. I just don't know who makes the best block or if there's really that much difference amongst them.

BLOWN95GT · 12-23-2011, 09:58 AM

Well the man o war block comes with two extra bolt holes per cylinder for the cylinder heads and all of the main caps are 4 bolt. Where dart and boss blocks are 4 bolt mains only on the center main caps.

RedSuperRanger23 · 12-23-2011, 10:07 AM

How does two extra bolt holes per cylinder for the head bolts work if the heads you're using comes with the standard number if bolt holes? Maybe I'm missing something here...

BLOWN95GT · 12-23-2011, 10:22 AM

I don't think you have to use them if you don't want to or you buy the man o war cylinder heads or have your cylinder heads machined. I think they are used in high compression, and very high boost applications to keep the heads from lifting and blowing the head gaskets.

RedSuperRanger23 · 12-23-2011, 10:26 AM

Yeah, I saw where it says provisions for the 2 extra per cylinder, so more than likely they wild have to be finished and tapped I guess.

BLOWN95GT · 12-23-2011, 10:29 AM

Quote:

Originally Posted by RedSuperRanger23

Yeah, I saw where it says provisions for the 2 extra per cylinder, so more than likely they wild have to be finished and tapped I guess.

I don't think you have to use them if you don't want to. I think they are optional if you don't want to all you do is cover them with the head gasket.

12-22-2011, 10:52 PM	#1
RedSuperRanger23 Gizmo Join Date: Jul 2006 Location: Gardendale, Al Posts: 272	Aftermarket Blocks World Man o' War, Dart, Boss or other aftermatket block that I've forgot... discuss. I'm planning on a 351W based build. __________________ 94 Mustang GT 89 Ranger XLT 96 F150 XLT 04 Crown Vic

12-23-2011, 09:23 AM	#3
RedSuperRanger23 Gizmo Join Date: Jul 2006 Location: Gardendale, Al Posts: 272	Im not sure on the power range just yet, but Id like to.do a single turbo setup. The main reason for using an aftermarket block is the ability to go to a 4.125 bore without blinking and still have some meat left to spare. __________________ 94 Mustang GT 89 Ranger XLT 96 F150 XLT 04 Crown Vic

12-23-2011, 09:48 AM	#5
RedSuperRanger23 Gizmo Join Date: Jul 2006 Location: Gardendale, Al Posts: 272	Yeah, piece of mind and overbuilding is probably gonna be the name of this game. Id really like this to be the first and last engine I build for this car. I just don't know who makes the best block or if there's really that much difference amongst them. __________________ 94 Mustang GT 89 Ranger XLT 96 F150 XLT 04 Crown Vic

12-23-2011, 10:07 AM	#7
RedSuperRanger23 Gizmo Join Date: Jul 2006 Location: Gardendale, Al Posts: 272	How does two extra bolt holes per cylinder for the head bolts work if the heads you're using comes with the standard number if bolt holes? Maybe I'm missing something here... __________________ 94 Mustang GT 89 Ranger XLT 96 F150 XLT 04 Crown Vic

12-23-2011, 10:26 AM	#9
RedSuperRanger23 Gizmo Join Date: Jul 2006 Location: Gardendale, Al Posts: 272	Yeah, I saw where it says provisions for the 2 extra per cylinder, so more than likely they wild have to be finished and tapped I guess. __________________ 94 Mustang GT 89 Ranger XLT 96 F150 XLT 04 Crown Vic

12-23-2011, 06:46 AM	#2
BLOWN95GT Senior Member Join Date: Mar 2010 Location: Oneonta, Alabama Posts: 401	What kind of power range are you looking for? Are you wanting to run n/a, nitrous, supercharger, turbo?

12-23-2011, 09:36 AM	#4
BLOWN95GT Senior Member Join Date: Mar 2010 Location: Oneonta, Alabama Posts: 401	Just figured I'd ask. A lot of people on the turbo forums are running stock 351w block's and over 800rwhp hopefully mine will be close to that. But a aftermarket block is good for piece of mind! And since your thinking of going turbo talk to Matt (coupe) on here, and Reed at WORK TURBOCHARGERS www.workturbochargers.com they really know their shit and can help you a lot.

12-23-2011, 09:58 AM	#6
BLOWN95GT Senior Member Join Date: Mar 2010 Location: Oneonta, Alabama Posts: 401	Well the man o war block comes with two extra bolt holes per cylinder for the cylinder heads and all of the main caps are 4 bolt. Where dart and boss blocks are 4 bolt mains only on the center main caps.

12-23-2011, 10:22 AM	#8
BLOWN95GT Senior Member Join Date: Mar 2010 Location: Oneonta, Alabama Posts: 401	I don't think you have to use them if you don't want to or you buy the man o war cylinder heads or have your cylinder heads machined. I think they are used in high compression, and very high boost applications to keep the heads from lifting and blowing the head gaskets.