AFR Heads on 512 with 11 to 1

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AFR Heads on 512 with 11 to 1

Post  Straubtech on October 24th 2016, 4:17 pm

Will have the dyno sheet but customer's customer just got it off the dyno 780HP and 750#/ft with a set of the AFR 300 Bullitt Heads.

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Re: AFR Heads on 512 with 11 to 1

Post  68galaxie on October 24th 2016, 4:34 pm

Very nice. Looks like tremendous torque for an 11:1 CR build.
Details hopefully will be coming.

Scotty J just finished his pump gas AFR 300 build posted on 460ford:
All engine build details see attached:

http://www.460ford.com/forum/37-engine-tech/233226-557-afr-300s-street-build-750-hp-%40-6-100-a.html
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Re: AFR Heads on 512 with 11 to 1

Post  Straubtech on October 25th 2016, 10:28 am

Peak HP was at 6600. Dyno sheet getting sent today. We used CP for the pistons on this build so they do have the prints on the AFR head for pistons.

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Re: AFR Heads on 512 with 11 to 1

Post  Straubtech on October 25th 2016, 12:02 pm

Torque
3600 699.3#/ft
5000 738#/ft Peak Torque
5700 698#/ft

HP
5000 rpm 703HP (Breaks 700)
6500/6600 773.2

36 degrees of timing
Mix of 91octane and 110

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Re: AFR Heads on 512 with 11 to 1

Post  68galaxie on October 25th 2016, 9:27 pm

Sounds very respectable indeed.
The 36 degrees advance seems higher than I expected. Was this an 85cc chamber version?
Anyhow we will learn more as more of these builds start being posted.

Cheers
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Re: AFR Heads on 512 with 11 to 1

Post  The Mad Porter on October 25th 2016, 10:49 pm

Both combo's showed 750 TQ and 773 hp on two different dynos. Interesting coincidence. Very Happy





S
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Re: AFR Heads on 512 with 11 to 1

Post  windsor on October 26th 2016, 2:08 am

Not bad, Mr. Straub.

Scotty - post up your build that I saw on facebook.  It's a good read and people are waiting to hear about the results on these chunks of aluminum.
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Re: AFR Heads on 512 with 11 to 1

Post  Straubtech on October 26th 2016, 11:35 am

windsor wrote:Not bad, Mr. Straub.

Scotty - post up your build that I saw on facebook.  It's a good read and people are waiting to hear about the results on these chunks of aluminum.

For 512CID I thought it respectable.

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Re: AFR Heads on 512 with 11 to 1

Post  whitefield on October 31st 2016, 5:35 pm

Straubtech wrote:Will have the dyno sheet but customer's customer just got it off the dyno  780HP and 750#/ft with a set of the AFR 300 Bullitt Heads.

Sounds like a real true street contender in a 64 Fairlane ! Cool
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Re: AFR Heads on 512 with 11 to 1

Post  Gary Blair on November 10th 2016, 8:10 am

Straubtech wrote:Will have the dyno sheet but customer's customer just got it off the dyno  780HP and 750#/ft with a set of the AFR 300 Bullitt Heads.

Nice result on your 512.
What are the specs on the cam?
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Re: AFR Heads on 512 with 11 to 1

Post  Straubtech on November 10th 2016, 2:22 pm

Gary Blair wrote:
Straubtech wrote:Will have the dyno sheet but customer's customer just got it off the dyno  780HP and 750#/ft with a set of the AFR 300 Bullitt Heads.

Nice result on your 512.
What are the specs on the cam?

Gary,
Server is down so I don't have it in front of me sir. Once it is up I will post them.

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Re: AFR Heads on 512 with 11 to 1

Post  Gary Blair on November 16th 2016, 9:07 am

Straubtech wrote:
Gary Blair wrote:
Straubtech wrote:Will have the dyno sheet but customer's customer just got it off the dyno  780HP and 750#/ft with a set of the AFR 300 Bullitt Heads.

Nice result on your 512.
What are the specs on the cam?

Gary,
Server is down so I don't have it in front of me sir.   Once it is up I will post them.

Server up?
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Re: AFR Heads on 512 with 11 to 1

Post  Straubtech on November 16th 2016, 9:13 am

Yes. Thanks for reminding me. Let me get it it.

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Re: AFR Heads on 512 with 11 to 1

Post  Straubtech on November 16th 2016, 9:18 am

.738/.692 Gross
265/278
109

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Re: AFR Heads on 512 with 11 to 1

Post  Gary Blair on December 14th 2016, 9:27 am

Straubtech wrote:.738/.692 Gross
265/278
109

Smaller than the SAMS P-51 pumpgas 532. Pretty much same power. Thanks.
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Re: AFR Heads on 512 with 11 to 1

Post  Straubtech on December 14th 2016, 9:47 am

Gary Blair wrote:
Straubtech wrote:.738/.692 Gross
265/278
109

Smaller than the SAMS P-51 pumpgas 532. Pretty much same power. Thanks.

Cross section on this head as Foxwell pointed out to me is the same as the AFR335. So it won't need much camshaft to make power. Your welcome sir and Merry Christmas!!

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