What manifold for 408 and why?

[dlowe01]

Was wondering what those with a 408 stroker are running for a manifold and why? Also what size carb. Any replies greatly appreciated.

[Steve Riley]

I'm using an Edelbrock air-gap RPM manifold to try and get the best all arround performance.
Steve Riley

[Tony Radford]

I'm running a polished Vic. Jr. I have some close up shots in my gallery. If I'm not mistaken, the Air Gap intake sits a bit taller. I've got an inch or so clearance between the air cleaner and the scoop. My only performance reference is my original stock-stroke Windsor (also a pic in the gallery). The difference is amazing.

[wilf leek]

Performer RPM. Would use a Victor Jnr, 'cept I don't have the under-hood clearance to fit one.

The better low-down torque from the dual-plane performer rpm does make for excellent driveability, at the expense of some top end HP.

Edlebrock 850cfm carb. Could probably get away with a 750cfm unit as well.

[blykins]

Vic Jr with my 425W....Demon Mighty Demon 750 on the carb....carb's too small...I'm running 88's and 98's in it right now, and it's really not rich enough for comfort sake.

[Zoom This]

Your question all depends on how your motor is designed. Low end torque, mid-range or top end performer. My 418 stroker was built as a track motor with gobs of mid range. I have a dual pattern cam with .572 on the intake and .576 on the exhaust. Heads are Edelbrock Victor Jr. with a Victor Jr. manifold topped with an 850 Holley. 750 Holleylost too much HP at top end.

If your motor is to be a cruiser with mild to moderate cam profile designed with low end power, stick with a dual plane manifold and a 750 cfm carb with vacuum secondaries.

[PSB]

Trick Flow Track Heat 351. What's a carb?

[SFfiredog]

PSB,

A carb is that rectangularish thing with 4 holes on top of the intake manifold that costs about $4000 less than EFI

--Mike