SRH ProFiler 13º DYNO results

[SpeierRacingHeads]

1007.7 hp at 8600
668 tq at 7100
433 cid
4.220 bore x 3.875 stroke
16.82 compression
Dart Iron Eagle Block
8.999 deck
.440 raised cam
55mm core Comp Cam
.904 BAM LIFTERS
7/16" intake pushrods
1/2" exhaust pushrods
282/297 115 LSA
1.006" / .955" lift
13 deg Profiler Heads by SRH (Chad Speier Racing Heads)
Brett Miller R420.2 manifold
Burr finished by Ron Warrick
2.35 blade CFM carb
2" to 2 1/8" headers - 27" primary length
Merge collectors
3.25" Choke / 4.00" Outlet
Q16 fuel
Star Machine Vacuum Pump
Dailey Engineering external pump with .875 pressure section
Mickey Williams 2 Piece Pan
Driven BR30 OIL

[ChopperScott]

If there was a like button, I'd hit it. Impressive build!

[maxracesoftware]

great Porting Job + Engine combo !!!

i ran it thru PipeMax v4.70 :

Calculated Exhaust Port Flow @28in.= 287.0000 -to- 307.3362 CFM @ 1.065019 Lift (no Flow Pipe)
User's Exhaust Port Flow input @28in.= 287.0000 CFM @ 0.955000 Valve Lift (no Flow Pipe)

Average Exhaust Temps = 1037.8 DegF

Exhaust Header Type = --- Primary Tube Specs : Race Header • Multiple Steps ---
--- 2-Step Primary Pipe Specs --- ( Total Length= 24.585 to 26.835 inches )
1st Step Diameter inches= 1.990 Length= 12.292 to 13.417 inches
2nd Step Diameter inches= 2.115 Length= 12.292 to 13.417 inches

your Header Tubes= 2.000, 2.125 total length = 27.0 long
PipeMax = 1.990, 2.115 rounded-off to nearest commercially avaliable Tube OD's = 2.000, 2.125
PipeMax Lengths= 24.585 to 26.835 .... yours = 27.000


Peak HP Choke-Section Diameter = 3.174 ( Choke-Section Length = 1.000 inches )
Peak HP Megaphone Diameter Start = 3.237
Peak HP Megaphone Diameter End = 4.037
Peak HP Megaphone Total Length = 11.195 inches -or- ( 5.098 inches = possibly greater High RPM HP )

PipeMax Collector Choke= 3.237 yours=3.250
PipeMax Collector Outlet OD = 4.037 yours=4.000

pretty good matchup !

[SpeierRacingHeads]

All I know is Pipemax nails everything I do here!!

[In-Tech]

Very nice Chad, I just wish it had a tad bit more compression

[maxracesoftware]

by ChopperScott » Mon Nov 14, 2022 11:17 am

If there was a like button, I'd hit it. Impressive build!

you can do this instead :

[Tom68]

Like button hit.

4.22 bores.

[ChopperScott]

by ChopperScott » Mon Nov 14, 2022 11:17 am

If there was a like button, I'd hit it. Impressive build!

you can do this instead :

[Tom68]

What does a 2.35 blade CFM carb flow at 28"h20 and 1.5"hg ?

[SpeierRacingHeads]

What does a 2.35 blade CFM carb flow at 28"h20 and 1.5"hg ?

You would need to ask Chris Cobb that..