Best Engine for Class Rules below, not Drag Racing

Alan Roehrich · 08-22-2011, 01:10 PM

Provided you can run an OEM replacement block, such as a BowTie, and you're willing to spin the thing up, a 4.5 bore 9.8" deck BowTie block with a 3.76" stroke crank (396/427) gives you 478 cubic inches. You can get real close to a 6.7" rod in that, allowing you to run a really light piston with a good ring package.

A set of 990 castings for the heads, since it says OEM castings and no aluminum (you'd need a cylinder head guy capable of Super Stock national record holder quality work). Probably a Super Victor Dominator pattern intake, and since they allow any single four barrel carburetor, you could talk to the guys at Quick Fuel about a really big Dominator pattern carburetor.

I see no valve train rules, so I'd be looking at a big core (54MM) roller cam, 0.904" roller lifters, Jesel belt drive and shaft mount rockers.

You have a really good choice of parts when you run a combination like that. Of course, with that big bore, short stroke, and long rod, that's a high RPM (8500 or higher) and wheel speed combination, not a "dead hook" combination.

Clay Arnett · 08-22-2011, 04:52 PM

For truck pulling all these engine options are no good. 12 valve ISB Cummins only way to go!

Mark Walton · 08-23-2011, 01:46 PM

How about an iron headed 426 style Hemi?

08-22-2011, 01:10 PM	#1
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,133 Likes: 1,605 Liked 1,915 Times in 430 Posts	Re: Best Engine for Class Rules below, not Drag Racing Provided you can run an OEM replacement block, such as a BowTie, and you're willing to spin the thing up, a 4.5 bore 9.8" deck BowTie block with a 3.76" stroke crank (396/427) gives you 478 cubic inches. You can get real close to a 6.7" rod in that, allowing you to run a really light piston with a good ring package. A set of 990 castings for the heads, since it says OEM castings and no aluminum (you'd need a cylinder head guy capable of Super Stock national record holder quality work). Probably a Super Victor Dominator pattern intake, and since they allow any single four barrel carburetor, you could talk to the guys at Quick Fuel about a really big Dominator pattern carburetor. I see no valve train rules, so I'd be looking at a big core (54MM) roller cam, 0.904" roller lifters, Jesel belt drive and shaft mount rockers. You have a really good choice of parts when you run a combination like that. Of course, with that big bore, short stroke, and long rod, that's a high RPM (8500 or higher) and wheel speed combination, not a "dead hook" combination. __________________ Alan Roehrich 212A G/S

08-22-2011, 04:52 PM	#2
Clay Arnett Member Join Date: Jul 2002 Location: Hartsville, IN Posts: 128 Likes: 0 Liked 0 Times in 0 Posts	Re: Best Engine for Class Rules below, not Drag Racing For truck pulling all these engine options are no good. 12 valve ISB Cummins only way to go!

08-23-2011, 01:46 PM	#3
Mark Walton Junior Member Join Date: Mar 2002 Location: Kansas Posts: 39 Likes: 0 Liked 0 Times in 0 Posts	Re: Best Engine for Class Rules below, not Drag Racing How about an iron headed 426 style Hemi? __________________ Mark Walton 5789 SS, STK

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