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PostPosted: Mon Apr 22, 2019 12:06 pm 
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Joined: Tue Apr 16, 2019 4:07 pm
Posts: 10
Location: B'ham, Alabama
fordman428 wrote:
Thanks once again for all the advice. I am fully convinced that the 408 is the best way to go as most have suggested. That being said, I'm going to move forward with a 377 build based on Brent's crank. Maybe I'm demented but sometimes I just want to do things a different way. This setup seems like a good compromise with a few extra cubes and a pretty light rotating assembly. I always wanted a high winding small block that wants to be shifted at 7k or so and now have to think about all the other stuff like SFI flywheel, balancer and a scatter shield. If this doesn't work out and its miserable to drive and I hate it, there is no one to blame but me for wanting the wrong combination in the wrong car. It should be fun to find out though.


I second this as well. I'll hang onto my OC heads and work with what I have. Thanks to all you guys that are much more knowledgeable than I.

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1972 Gran Torino Sport - 351CJ, Toploader, 4.11
2012 Mustang - 5.0, 6MT, 3.55


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PostPosted: Mon Apr 22, 2019 5:03 pm 
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Joined: Mon Oct 23, 2017 9:53 am
Posts: 229
My 73xr7 cougar weighs in at 3700 with me in seat. I originally ran the 357 with solid cam and it ran a best of 12.7@107. Then I switched to all iron 400 base motor with 408 cubes and 620 lift solid stick made around 519 ftlb tq at 4100 and 551hp at 6200 so not spinning hard at all. That ran in 11.3 range. I then switched to chi 4v head that dropped it to 11.1 range which I could have easily got with iron heads had i spent money on them. Later went to 438 stroker kit that started at 650hp and 571 ftlb and now to 703hp@ 6700 and 605ftlb. That moves car to 10.80 range all at air starved elevation of 4500ft plus. So in my eyes for minimal extra cost the extra cubes are huge help especially when we running cars of our weight.


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PostPosted: Tue Apr 23, 2019 9:58 am 
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booyah45828 wrote:
I always thought the OC head would work out right at 10:1 with a 408, flat tops, and zero deck?


I did the math, since nobody replied with anything certain. It comes out to 10.3:1 using 78cc heads, a felpro 1013 head gasket, flat top pistons(3cc valve relief), zero deck, and 408 cubes (4.030 bore x 4" stroke).

That's what I would do for sure.


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PostPosted: Tue Apr 23, 2019 10:46 am 
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Joined: Mon Oct 23, 2017 9:53 am
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booyah45828 wrote:
booyah45828 wrote:
I always thought the OC head would work out right at 10:1 with a 408, flat tops, and zero deck?


I did the math, since nobody replied with anything certain. It comes out to 10.3:1 using 78cc heads, a felpro 1013 head gasket, flat top pistons(3cc valve relief), zero deck, and 408 cubes (4.030 bore x 4" stroke).

That's what I would do for sure.

Yes that sounds about right. Whats the ol saying. Hp= cubic inch or cubic bucks!!


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PostPosted: Tue Apr 23, 2019 10:23 pm 
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Joined: Mon Dec 31, 2012 1:15 am
Posts: 97
I’ve got a 3820 pound with driver 72 mach1 that has run a best of 11.48 at 117 on pump gas. I typically run 11.70-11.80 at 114-115. I highly recommend going the stroker route. Mine is a Scat based 408 cast crank kit with reverse dome pistons for a CR ratio of 10.3:1. Heads are closed chamber 4V with minor port and bowl cleanup. I use a Strip Dominator intake and a pro systems 750 based dp carb ( from a smaller motor, I used to run). Trans is a C6 with lower first and second gear and a 3.89 Detroit Locker rear and 275 50 15 my et street R drag radials. I drive this car 30 min to track and back home on hiway. Stall is a rebuilt CJ converter with about 3000-3200 stall. I think there is more in this thing and I’d like to be able to run in the 11.50 range consistently. It dynoed at 425 at the wheels with a Torker intake. I use a solid flat tappet from Brent. I turn this thing 6700-6800 rpm. I built this engine 6 or 7 years ago on a very tight budget. It makes about 70-100 passes a year. And gets hot lapped often 3 or 4 passes in a row even.



You’ll love the stroker


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PostPosted: Wed Apr 24, 2019 6:30 am 
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Joined: Thu Sep 12, 2013 6:33 pm
Posts: 21
blykins wrote:
Wow, I need to charge more for custom cams.


I think thats the average price for flat tappet cams from the Bullet lobe library.

That price doesn't include the years of expertise and experience it takes to choose the right lobes :)

What is the typical price for a custom flat tappet in the USA?


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PostPosted: Wed Apr 24, 2019 6:56 am 
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Posts: 2557
I've been charging around $210 for a custom solid flat tappet cam, non-nitrided.

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www.lykinsmotorsports.com
brent@lykinsmotorsports.com


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PostPosted: Tue May 14, 2019 10:30 am 
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> I think there is more in this thing and I’d like to be able to run in the 11.50 range consistently.

There's .2 in your converter for sure. I'd well bet you're leaving it on the table in the 60'. But it will affect the drive. The Falcon runs around 11.80 with a 351, 10.5:1 and a hydro roller. 1/8 mile speed vs weight (3250 staged) says maybe 340~350 RWHP. But I'm also using a 4600 stall converter and 4.56 gearing. With an update to 393 CI and a decent Brent spec solid roller it's a 10 second ride easy.

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http://raceabilene.com/kelly/hotrod
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