Weiand Or Edelbrock With Peanut Port 360’s?

[labdad]

Okay, have gone through some threads, watched videos on porting/polishing, and have come away with some great info. I plan to use the 360 casting heads already on my Mark IV 1990 4-bolt 454 truck engine and have gleaned that the Weiand 8122 manifold pairs pretty well, and that the Performer 2161 may flow better with some work and “epoxy”. Anyone have any first-hand experience with making this choice or want to chime in on a better idea? Current plan: stock crank, rods, up to 10:1 ratio pistons, the 360 heads with stock valves, roller cam/lifters/rockers with springs to accommodate (for cam leaning toward XR264HR Part #11-413-8), Sniper EFI, headers of some sort YTBD. And if I missed a video or thread that addresses this specifically I will apologize now!

 

[Grumpy]

XR264HR Part #11-413-8
https://www.performanceparts.com/co..._fit_hydraulic_roller_1200_5200_chevy_396_454
Engine:
396-454 BBC
RPM Range:
1200 to 5200
Camshaft Type:
Retro-Fit Hydraulic Rol

Intake Valve Lift:

.510"
Exhaust Valve Lift:

.510"
Advertised Intake Duration:

264°
Advertised Exhaust Duration:

270°
Intake Duration @ .050":

212°
Exhaust Duration @ .050":

218°
Lobe Separation:

110°
Cam Gear Attachment:

3-Bolt
Camshaft Material:

Austempered Ductile Iron
Camshaft Grind Number:

XR264HR
Usage:

Street/Performance
Requires Aftermarket Valve Springs:

Yes
Quantity:

Sold As Each

WHAT TRANSMISSION AND REAR GEAR RATIO?
I can,t think of many 454 displacement and 10:1 comp ratio engines,
that might not benefit from a bit larger cam

Id be looking at something closer to a .550 lift and a 220-223 int duration/228-231 ext duration in a hydraulic roller

http://garage.grumpysperformance.co...e-springs-and-setting-up-the-valve-train.181/


WHY NOT CALL 4-5 cam manufacturers and get their thoughts
before making a choice
http://garage.grumpysperformance.com/index.php?threads/semi-fool-proof-cam-sellection.82/

a few related threads and sub-linked info
http://garage.grumpysperformance.co...-peanut-port-big-block-combo.2900/#post-13226

http://garage.grumpysperformance.co...sic-454-big-block-chevy-build.1211/#post-2549

http://garage.grumpysperformance.co...n-v-vi-to-adjustable-rockers.4564/#post-12170

http://garage.grumpysperformance.co...gine-build-up-for-the-street.3153/#post-11626

 

[labdad]

Thanks. Running a TH400 and 3.73, front and back on what is to become my 1981 K30 Crew.

 

[labdad]

P.S.- Could use a converter stall speed recommendation for a truck that will tow occasionally.

 

[Grumpy]

the converter stall needed is highly dependent on the cam selected, and factors like truck weight and tire diam.
you might want to ask each cam manufacturer you get camshaft suggestions from,
for there thoughts on the best converter stall speed, match.

https://www.crower.com/camshafts/chevy-396-454-hydraulic-roller-cam-222hr229-late-model.html

most likely something close to this link above,
matched to a 2400 rpm stall converter, and yeah.
new better valve springs and verifying,
piston to the valve and other valve train geometry and clearances,
will be mandatory


http://garage.grumpysperformance.com/index.php?threads/checking-piston-to-valve-clearances.399/

http://garage.grumpysperformance.co...e-springs-and-setting-up-the-valve-train.181/

http://garage.grumpysperformance.co...e-springs-and-setting-up-the-valve-train.181/

http://garage.grumpysperformance.com/index.php?threads/calculate-fuel-injector-size.1200/

http://garage.grumpysperformance.com/index.php?threads/fuel-pressure-regulators.635/

http://garage.grumpysperformance.com/index.php?threads/setting-up-your-fuel-system.211/

https://www.holley.com/products/intakes/efi_manifolds/parts/300-561

 

[labdad]

Yeah, we are talking about 31.5” tires at close to 5,800 pounds full of fuel.