557" AFR 300's Street build 750+ HP @ 6,100 - Page 2 - 460 Ford Forum
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post #16 of 46 (permalink) Old 10-23-2016, 02:37 PM
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valve covers

Did you have to do anything to the (I think) Blue Thunder valve covers as far as clearance goes inside of them?

67 mustang street car, 1977 460, 212 degree cam, 2500 converter, 3.50 gears, RHP Edelbrock heads
best ET 12.01, mph 112.98, 60ft 1.69

http://www.youtube.com/watch?v=7HztIgJymNw

http://s212.photobucket.com/albums/cc110/laveennick/
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post #17 of 46 (permalink) Old 10-23-2016, 03:28 PM Thread Starter
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Did you have to do anything to the (I think) Blue Thunder valve covers as far as clearance goes inside of them?

As noted in the FB album the BT cast valve covers have to be clearanced just as with the SCJ and P-51 castings.
Using a 1643 felpro (thicker) helps. The baffling has to be clearanced for poly locks as well. Kind of a pain in the ***.

The motorsports tall valve covers fit with no mods.



S

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post #18 of 46 (permalink) Old 10-25-2016, 09:52 PM
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MP is the intake the same height as a victor?

Why not use a girdle with the rockers?

Why not 7/16 pushrod?

Cheers, Bob

Ps- Did you see the afr headed build on the other site?......solid roller deal 512ci, 11.1.....778hp at 6600rpm.
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post #19 of 46 (permalink) Old 10-26-2016, 01:33 AM Thread Starter
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MP is the intake the same height as a victor?

Why not use a girdle with the rockers?

Why not 7/16 pushrod?

Cheers, Bob

Ps- Did you see the afr headed build on the other site?......solid roller deal 512ci, 11.1.....778hp at 6600rpm.

Pad heights are similar though I would have to actually measure.
Yes I saw the post and the link to this post in that thread. Straub has offered no build specs as of yet.

With HYDRAULIC ROLLER LOBES and only 487# open spring pressure a rocker stud girdle and 7/16" pushrods (especially) are overkill. .083" wall 3/8" are fine. If I were to step up to the next largest hydraulic roller I have in my catalog I might opt for .120" wall 3/8" pushrods. If you look at the pushrod holes in the AFR castings... a 7/16" push rod is going to be a tough fit I promise you.

Would a stud girdle help stabilize the rocker studs and maybe make a few hp? Yes however I do not have clearance in the LTD for tall valve covers...


This is a simple hydraulic roller lobe street build that just happens to make really good power. The RPM and spring pressures are street friendly and not hard on parts. No need to complicate things. My build philosophy does not sanction the use of .750" lift solid rollers in street engines like has been argued for by a reader on our FB page.




S
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post #20 of 46 (permalink) Old 10-26-2016, 06:44 AM
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I like the KISS rule aswell, thanks for sharing, not many go indepth like you do and show details with pics,

Here is a basic rundown from the other build......i was surprised at the timing!!

BBF 512 with 11 to 1 Compression
Box stock AFR300 heads
AFR Intake
1050 Carb
Straub Solid Roller custom 260 duration
Morel Needle bearing lifter
7/16" Pushrods
Goal was 700HP

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 91 octane and 110

Last edited by bob460; 10-26-2016 at 06:46 AM.
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post #21 of 46 (permalink) Old 10-26-2016, 12:27 PM Thread Starter
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Originally Posted by bob460 View Post
I like the KISS rule aswell, thanks for sharing, not many go indepth like you do and show details with pics,

Here is a basic rundown from the other build......i was surprised at the timing!!

BBF 512 with 11 to 1 Compression
Box stock AFR300 heads
AFR Intake
1050 Carb
Straub Solid Roller custom 260 duration
Morel Needle bearing lifter
7/16" Pushrods
Goal was 700HP

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 91 octane and 110

I go into depth to allow for context and comparison.

I am following the other thread as well as it has a link to this thread.

The early evidence more than suggests the castings are capable performers.



S

Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
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Last edited by The Mad Porter; 10-26-2016 at 12:30 PM.
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post #22 of 46 (permalink) Old 10-27-2016, 09:21 PM
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Scott,

If you where to compare the off-idle torque and throttle response in comparison to a 460 with stock ported heads, Performer intake, 750 Holley, headers, 10 to 1 compression and a [email protected] cam, would this build with a single plane intake have equal or better performance down at the low-end?

Thanks,

Dave
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post #23 of 46 (permalink) Old 10-27-2016, 09:44 PM
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Great build Scott. Thanks for sharing. I know intake gaskets and especially time aren't free, but I second or third the idea that I'd love to see a torker II dyno on the engine.

Lucas
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post #24 of 46 (permalink) Old 10-28-2016, 06:29 PM
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Quote:
Originally Posted by The Mad Porter View Post
This is our long awaited AFR 300 bullitt headed stroker build. We will be using the heads and intake as delivered for a baseline.

557 for Project 12.99 LTD (750+ HP @ 6,100)
By design this build was meant to have the same power-band and peaks as the current 460 as well as the same DCR.


4 bolt CJ D0VE-A block bored and deck plate honed.
Main line honed.
Scat 9000 4.5" crank
Scat 6.7" H beams with 8740 bolts.
Autotec custom AFR pistons 22 cc dish
11.7 to 1 static c/r 9.2 to 1 DCR. Pump gas 92/93 friendly.
External balance due to 6,000 rpm peak.

Canton 15-764 road race pan
Canton 15-763 pick up for M84 D HFD (paul kane) oil pump.

AFR Bullitt 300 cylinder heads
Comp Ultra pro magnum XD rockers 1.80
AFR Dominator flange intake
Comp carbs 1050 3 circuit street dominator.

Engine pro billet timing set with thrust bearing.
Custom comp roller 3 pattern HR cam 252-254 / 266 @ .050" 110 Lsa 106 Icl
Comp 936 16 solid roller lifters

Smith brothers push rods. 3/8" Length TBD.
Comp cams Ultra Pro Magnum 1.8 rockers.

New Engine quest timing cover
Performance Quotient Aluminum Water pump.

80008 Professional products Damper
OEM hatchet

D/S distributor with bronze gear.

Blue thunder CJ valve covers

Targeted output.

700 Tq
680 to 700 HP at a street friendly 6000 rpm


Actual output

736 TQ
755 HP @ 6,100 rpm with 2 1/4" dyno headers

733 Tq
744 HP @ 5,900 rpm with 2" dyno headers


I felt that the dyno correction factor was 2% too high so I corrected to what I feel are more realistic numbers based on weather conditions.

The combo made a best pull of 729.7 HP UNCORRECTED.

See our FB link in signature line for more pics and dyno vids.



S
Mad Porter...Is this type of Motor for Sale and if so how much are we talking about to purchase such engines.

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post #25 of 46 (permalink) Old 10-28-2016, 07:20 PM Thread Starter
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Mad Porter...Is this type of Motor for Sale and if so how much are we talking about to purchase such engines.

Sent from my SM-G935V using Tapatalk

Yes this will be added to our current list of crate engine options. I have the pieces to duplicate this combo including the 4 bolt main CJ D0VE block.

Telephone me at the contact number in my signature line or email me at: [email protected]



S

Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
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post #26 of 46 (permalink) Old 10-28-2016, 07:23 PM
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Quote:
Originally Posted by The Mad Porter View Post
Yes this will be added to our current list of crate engine options. I have the pieces to duplicate this combo including the 4 bolt main CJ D0VE block.

Telephone me at the contact number in my signature line or email me at: [email protected]



S
Do you by chance have any experience building stroker motors tht have roots style blowers.

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post #27 of 46 (permalink) Old 10-28-2016, 08:33 PM Thread Starter
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Originally Posted by DJOHAGIN View Post
Scott,

If you where to compare the off-idle torque and throttle response in comparison to a 460 with stock ported heads, Performer intake, 750 Holley, headers, 10 to 1 compression and a [email protected] cam, would this build with a single plane intake have equal or better performance down at the low-end?

Thanks,

Dave

Dave,

Given that the engine was designed to duplicate the 460 currently in the LTD its off idle and tip in characteristics are similar to this engine. The additional duration and resultent overlap keeps this engine kind of snarkey until about 1,500 rpm. Throttle response on the dyno was excellent.

To your question.

The comparison you reference is almost exactly like our 460 HP crate engine with a HP peak of 5000 rpm with a torque peak of 3,400 rpm. This type of combo will be a bit better with regard to low speed manners than either the LTD's current 460 or the 557.

The whole point with this combo is to have a street friendly RPM range and reasonably good driveability with the comp carbs 3 circuit street dominator. With the 3450+ stall convertor and 3.50 gears I expect after some tuning with a wideband that the 557 will be a blast bordering on off the hook to drive.

I intentionally left the engine a bit LEAN on the dyno to do final A/F tuning in the vehicle which IMO is more accurate. I believe there are a few more HP hiding in the combo.




S

Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
"Parkland Performance Auto Machine" Formerly RHP
(253)-988-6648
http://www.facebook.com/Ppamllc

Last edited by The Mad Porter; 10-28-2016 at 08:35 PM.
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post #28 of 46 (permalink) Old 10-28-2016, 08:36 PM Thread Starter
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Originally Posted by www.betterdeadth View Post
Do you by chance have any experience building stroker motors tht have roots style blowers.

Sent from my SM-G935V using Tapatalk

Email received and answered.




S

Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
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post #29 of 46 (permalink) Old 07-03-2018, 03:12 PM
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Garage
Just ran into this thread! Thank you & good work!!!

DAMAGEinc
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post #30 of 46 (permalink) Old 07-03-2018, 05:29 PM Thread Starter
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Just ran into this thread! Thank you & good work!!!

Thank you,


After splitting the number 5 cylinder (even with a good sonic check) we upgraded to an A460 block and a bit more HR cam timing for 829 HP


https://www.facebook.com/pg/PpamLLC/...44764065901276



S

Scotty J. "AKA" The "Mad Porter"
"EMC 2006" 3rd place finisher
Ported BBF iron head specialist & Aluminum heads from all sources.
Custom ground cams
See our products in the Vendor for sale section
Customized crate engines
ParklandAutoMachine.com
R-H-P.biz
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