Originally Posted by BRETV (Post 689834)

We ran a 95 Cobra R back in the late 90's early 00's. It was 351W. Had the F3 GT40 heads. We ran in it F/S. Went high 10's. weighing 3300 lbs. rated at 300 HP. Wasn't a roller motor. We were surprised when we took it apart for the first time when we started to build it as a stocker.




Bret Velde
2003 I/SA

Originally Posted by goinbroke2 (Post 689829)

What 351w would be able to make any power? Even the rare D0 heads flow same/less than gt40P's. They barely support a 302 let alone 351 inches.

Reminds me when Ernie Elliot built a 327" for restrictor races and qualified WAY WAY quicker, so nascar made the "minimum cu in" ruling.

What secret am I missing where a top end that is barely enough to feed 300 cubes will run in a performance category with 50 more cubes?

Edit: On Stan's site I checked out the basic heads from ford/chev/dodge.

Mopar 051 head 1.88/1.60 (no idea if its good or bad)
50/49 113/97 165/123 188/123 193/137

Chev 462 1.94/1.50 (again no idea if this is a good head or not)
50/54 119/88 167/116 198/128 212/134

Ford E7 (as good as any and better than most stock ford heads) 1.78/1.45
52/39 95/74 132/98 143/104 159/109

To me, ford heads barely flow enough for 302's and once you see what 360's and 350's have for "base" heads, the 351W to me is way under headed.
Richard Holdener ran a stock junkyard 302 and got 259hp and a stock 351 got the same but at a lower rpm which to me says as cast, stock heads will flow enough to produce 260hp and that's it. (for a base to start from)

Am I reading something wrong??

Originally Posted by goinbroke2 (Post 689829)

What 351w would be able to make any power? Even the rare D0 heads flow same/less than gt40P's. They barely support a 302 let alone 351 inches.

Reminds me when Ernie Elliot built a 327" for restrictor races and qualified WAY WAY quicker, so nascar made the "minimum cu in" ruling.

What secret am I missing where a top end that is barely enough to feed 300 cubes will run in a performance category with 50 more cubes?

Edit: On Stan's site I checked out the basic heads from ford/chev/dodge.

Mopar 051 head 1.88/1.60 (no idea if its good or bad)
50/49 113/97 165/123 188/123 193/137

Chev 462 1.94/1.50 (again no idea if this is a good head or not)
50/54 119/88 167/116 198/128 212/134

Ford E7 (as good as any and better than most stock ford heads) 1.78/1.45
52/39 95/74 132/98 143/104 159/109

To me, ford heads barely flow enough for 302's and once you see what 360's and 350's have for "base" heads, the 351W to me is way under headed.
Richard Holdener ran a stock junkyard 302 and got 259hp and a stock 351 got the same but at a lower rpm which to me says as cast, stock heads will flow enough to produce 260hp and that's it. (for a base to start from)

Am I reading something wrong??

Originally Posted by 1347 (Post 689843)

I am not sure of your formula for the 290hp, but my 302 cast iron head super stock engine with 1968 heads and stock size valves goes 10.70s in a 3100lb car.

When I talked about the 351w, I had said research it, not.build it. I haven't looked to see if anyone has had success with it. There are multiple options

Originally Posted by 1347 (Post 689843)

I am not sure of your formula for the 290hp, but my 302 cast iron head super stock engine with 1968 heads and stock size valves goes 10.70s in a 3100lb car.

When I talked about the 351w, I had said research it, not.build it. I haven't looked to see if anyone has had success with it. There are multiple options

Originally Posted by ShipC1970 (Post 689861)

Mr Hoven! Big fan of your maverick! I was on the fence about doing a 68 302 your car being the inspiration! I have decided to run a 351c. A local guy has one for sale that’s a 70 block and heads that I’m going to run in my 70 coupe.. Still doing a ton of homework though as this is new to me! Thank you everyone for your responses and intel I highly appreciate it!

Thanks!
Chris

Originally Posted by Jim Caughlin (Post 689862)

Which 351C combo are your referring to? Are you saying the local guy has a complete prepped SS motor or just the core engine? If it's a core, are they the correct head castings for the combo you want to run? Bear in mind the absolutely cheapest part of building a SS motor is going to be the engine core.