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Old 04-14-2011, 10:52 AM
Dyna Dyna is offline
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Thanks again for your answers. I kind of figured the 3sp would explode, question is what manual would work and still having the "shift arms" on the side so you can still hook it up to the column shifter on the Burb. I kind of want to avoid going auto if I can. If I was forced I probably go with building my T700-R4.

Was playing along with the program over at camquest, and a 280XFI HR13 would produce well over 400 ftlb between 1500 and 7000 rpm with a peak of 550 at 4500 and 545HP at 5500. That was with large headers although. The ram -horns will take a lot of that away - scary amount nearly... but then you don't really know what manifold the dyno prog think is std. Could probably go with a hotter cam if it's what you say it's done for a 350.

What I mainly was fishing for was peoples opinion, it's easy to do the fill in stuff at various companies but that never gets as good as somebody that is really good at cams. After all lunati probably gets zillions of requests everyday.

Lets see if someone actually have used their lifters or rockers and have any view of it.

Sincerely Dyna

Originally Posted by SSedan64
You're going to need a strong Trans for that amount of power. A manual 3-speed isn't going to cut it. I'd use a 3-speed TH400 with the 2.88 gear or a well built TH700R4 with a 3.73-4.10 rear gear.
Use this Calculator & you'll see which gears you'll need for the 70mph & 150mph and at what rpm they'll be reached>>
For 70mph @2000rpm you need about a 2.40 final gear ratio but, at 150mph you would only be turning 4300rpm. I figured this with a TH700R4, 3.42 gear and 235/70/15 tire.

Comp has a free Dyno download to play around with different Cams>>
All SBC Cam operating ranges are stated using 350ci engines so the Cam's operating/rpm range will be lower with a 406ci engine.
It's very difficult to Spec a Cam, I'd go to several Cam sites and fill out their spec sheet for best results. Lunati, Comp, Isky etc..
There're over 100 Dynoed engine combos here>>

I would not go cheap on the Valve train. Pro Comp, Proform etc.. Rockers & Lifters look cheaply made. I haven't searched to see if PC has had problems but, have read many problems with ProForm Rockers. I'd use Scorpion Rockers and Lunati, Morel or Isky Lifters.

You're correct, I hadn't noticed the machinable Boss on the Eddy RPM Intake.
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