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Alan Roehrich · 03-01-2011, 04:44 PM

Odds are this is a 454 powered SS/GT car, since that's the most common place to find a 781 head. I'd look at an oval port Strip Dominator, or stick with the Victor Jr. 454-O. But it needs to go to a good shop to be properly modified. And unless your intake is a serious handicap, I'm not sure you'll find 15HP. The correct intake, properly modified, is going to cost you $1K or more, and if the heads aren't up to the task, it won't help much. I wouldn't use a Dominator flange, the plenum may need to be deeper, and/or longer, but it doesn't need to be wider.

03-01-2011, 04:44 PM	#4
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,105 Likes: 1,561 Liked 1,784 Times in 407 Posts	Re: SS/GT Big block Chevy intake Odds are this is a 454 powered SS/GT car, since that's the most common place to find a 781 head. I'd look at an oval port Strip Dominator, or stick with the Victor Jr. 454-O. But it needs to go to a good shop to be properly modified. And unless your intake is a serious handicap, I'm not sure you'll find 15HP. The correct intake, properly modified, is going to cost you $1K or more, and if the heads aren't up to the task, it won't help much. I wouldn't use a Dominator flange, the plenum may need to be deeper, and/or longer, but it doesn't need to be wider. __________________ Alan Roehrich 212A G/S