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300 Ford Drag Engine 
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Post 300 Ford Drag Engine
Hello y'all here, does anyone know where can I find some photos of the Bruce Sizemore 's H/MP Ford Maverick 300 Drag Engine ? If someone have them, please post them here, it would be very much appreciated !

Thank you,
Inline six
Brasil - S. America


Sun Feb 15, 2009 11:43 am
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http://fordsix.com/forum/viewtopic.php?t=33048

There are pics of a highly modified 300 in that thread but I don't know if it is the Sizemore ride.

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'83 F150 300, 0.030 over, Offy DP, Holley 4160/1848-1 465 cfm, Comp Cam 260H. P/P head, EFI exhaust manifolds, Walker Y Pipe, Super Cat, Turbo muffler, Recurved DSII, Mallory HyFire 6a, ACCEL Super Stock Coil, Taylor 8mm Wires, EFI plugs.


Sun Feb 15, 2009 12:08 pm
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not realy any pics but here's the recipe
http://www.geocities.com/mustang_man_1966/ scroll all the way to bottom where it says archives and click and then look for the H/mp buildup article.

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Image 300's make good truck motors....not race motors


Sun Feb 15, 2009 6:43 pm
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Post 300 Ford Drag Engine
Hello fellows,

Thanks for the replies but unfortunately neither are the 300 H/MP Maverick "PREPARATION H" Drag Engine from Bruce Sizemore, as I guess that's very hard to get it, but I hope that someone could still help me out on this matter.

Thank you,
Inline Six :(
Brasil - S. America


Tue Feb 17, 2009 10:19 am
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Inline didn't you find the article?? it's straight from ford motor co.

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Image 300's make good truck motors....not race motors


Tue Feb 17, 2009 10:51 am
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Post 300 Ford Drag Engine
82F100,
Hello buddy, sure I found that article talking about the Bruce Sizemore's engine recipe along with a black & white photo of his H/MP Maverick Drag Car and I'd like to thanks for your help, but I'm looking for the Sizemore H/MP Maverick Drag Engine Pictures, as I hope someone could still help me out on this matter !

Thank you,
Inline six :(
Brasil - S. America


Tue Feb 17, 2009 11:24 am
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There was a man from Alabama in the 70's that had probably the fastest H/MP 300 that there was. His name is Gary Isbell, and was one of my toughest competitors against our ChevyII. That magazine article never states what kind of ET or performance the Sizemore car had. But knowing there is a huge difference in how the engine in the article is prepped, and how Isbell's 300 and our 292 was built and performed, its hard to believe the Sizemore car even raced in the same class, H/MP. The Isbell car and ours as well campaigned to the very end of its time in NHRA history, before they did away with the class. So if the Sizemore car was even a stand out, it had to be way back in the 60's, before the engine development of that class grew to what it was at the end of the class existing. Huge roller cams, very high RPM, super high compression,brazed up intake and exhaust ports were what was happening in 79 and 80.Thats were the Sissell "lump port" technology was developed, our engine was the first to use this and take it to a NHRA national championship levels on many occasions. So, the article was probably written at a time before the engine development advanced to its full potential. I forgot what Isbell's best ET was, but we made the very last pass in the class before NHRA ended the H/MP class, and we went 10.39, and Isbell's car could run close to that. All total, we won 11 NHRA national championships and set over 40 National records in three different class, Gas, M/P and Comp Eliminator. In comparison, the article engine would be a very mild engine compared to what they eventually evolved into at the end....


Tue Feb 17, 2009 1:29 pm
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Post 300 Ford Drag Engine
CNC - Dude

Thanks for your reply. Just take a look at your email as I sent you an email direct to you.

Thank you,
Inline Six :)
Brasil - S. America


Tue Feb 17, 2009 5:27 pm
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CNC-Dude IIRC Sizemore's maverick was in the mid to low 11's,11.40's I think. In 78-79 is when he started running I/Gas the first car was one of Gliddens old pintos. I have a couple of pictures one being an engine shot, I'll see if I can post them or get a link.

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Tue Feb 17, 2009 6:27 pm
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82F100 wrote:
CNC-Dude IIRC Sizemore's maverick was in the mid to low 11's,11.40's I think. In 78-79 is when he started running I/Gas the first car was one of Gliddens old pintos. I have a couple of pictures one being an engine shot, I'll see if I can post them or get a link.
Ok, thanks. I also should have payed closer attention to the article, because I now see that it was a 240 engine instead of a 300, so that isn't exactly an apples to apples comparison with Isbell's Maverick( my bad). Low 11's is pretty respectable for a 240, non the less.


Tue Feb 17, 2009 7:03 pm
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CNC-Dude, 240/300 blocks are basicaly the same, crank/rod combo differentiates the size of the motor. Simply its still a 300 .040 over with a 300 crank (3.98 stroke) and 240 rods (6.72) making it a long rod 300

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Tue Feb 17, 2009 11:11 pm
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