Mark Bradley
Da guy in Newbury
If things go well this will be all the relevant details on my 496 build including the dyno results and specifics on the parts used that make a difference.
Some of you may recall my concern about the RPM accuracy but the curve really tells the story.
=====================
The photos attached in order are:
- Brodix HV2017 manifold.
- NGK7 plugs with ~300 miles.
- Dyno pull comparing the different air cleaners.
- Salad bowl (red line on dyno).
- Custom drop base (black line on dyno).
- Stainless Works headers
BTW: at ~4000RPM and up the motor pulls less than ~1/2” of vacuum. Even with the low profile air cleaner.
=====================
Motor
=====================
Block & Rotating Assembly
- 0.60 over 454 4bolt
- 4.310in Bore x 4.250in Stroke
- 4340 internally balanced crank (1500hp rated)
- Eagle H Beam Rods with 7/16" ARP 8740 rod bolts (850hp rated)
- Mahle forged +18cc Pistons
=====================
Heads
=====================
Brodix Race-Rite 26°
P/N 2061003sscc
CNC 115cc chamber (10.2:1CR)
Compression check = 150 PSI/Cyl
2.250 intake & 1.880 exhaust
Lift/Flow @28"H2O
.200/160/113
.300/224/147
.400/280/179
.500/321/203
.600/340/221
=====================
Cam components
=====================
- Cam (XR294HR) .571/.593 & 294°/300° w/110° lobe separation
- Short travel hydrolic rollers (15854-16)
- Ultra Pro Magnum XD 1.8:1 rockers (1828-16)
=====================
Induction:
=====================
- FiTech MeanStreet fuel injection (Modified to 940cfm)
8x62lb injectors.
- Brodix HV2017 manifold
- 2.5” drop base with 14x4 K&N filter
=====================
Ignition:
=====================
- Pertronix III module (in original distributor & Rev limit set at 6900).
18° initial & 38° total all in by 2500 rpm
NGK7 plugs (gaped at .035)
=====================
Exhaust:
=====================
Stainless Works CANV679
2" primaries with 3.5" collectors.
3" stainless exhaust, X pipe & mufflers
=====================
Some of you may recall my concern about the RPM accuracy but the curve really tells the story.
=====================
The photos attached in order are:
- Brodix HV2017 manifold.
- NGK7 plugs with ~300 miles.
- Dyno pull comparing the different air cleaners.
- Salad bowl (red line on dyno).
- Custom drop base (black line on dyno).
- Stainless Works headers
BTW: at ~4000RPM and up the motor pulls less than ~1/2” of vacuum. Even with the low profile air cleaner.
=====================
Motor
=====================
Block & Rotating Assembly
- 0.60 over 454 4bolt
- 4.310in Bore x 4.250in Stroke
- 4340 internally balanced crank (1500hp rated)
- Eagle H Beam Rods with 7/16" ARP 8740 rod bolts (850hp rated)
- Mahle forged +18cc Pistons
=====================
Heads
=====================
Brodix Race-Rite 26°
P/N 2061003sscc
CNC 115cc chamber (10.2:1CR)
Compression check = 150 PSI/Cyl
2.250 intake & 1.880 exhaust
Lift/Flow @28"H2O
.200/160/113
.300/224/147
.400/280/179
.500/321/203
.600/340/221
=====================
Cam components
=====================
- Cam (XR294HR) .571/.593 & 294°/300° w/110° lobe separation
- Short travel hydrolic rollers (15854-16)
- Ultra Pro Magnum XD 1.8:1 rockers (1828-16)
=====================
Induction:
=====================
- FiTech MeanStreet fuel injection (Modified to 940cfm)
8x62lb injectors.
- Brodix HV2017 manifold
- 2.5” drop base with 14x4 K&N filter
=====================
Ignition:
=====================
- Pertronix III module (in original distributor & Rev limit set at 6900).
18° initial & 38° total all in by 2500 rpm
NGK7 plugs (gaped at .035)
=====================
Exhaust:
=====================
Stainless Works CANV679
2" primaries with 3.5" collectors.
3" stainless exhaust, X pipe & mufflers
=====================
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