Hg

This is what I'm looking at, and I have the shortblock as of right now, but I'm still throwing around ideas for the topend.

350 4 bolt main, .030 over
Forged TRW .100 dome pistons
Forged Polished eagle I beam rods
Forged eagle crank
ARP fasteners
Miniram III w/ Edelbrock ETEC 200cc heads(or Miniram with AFR 195s?)
30# SVO injectors
CC306 or GM 847 cam ????
Comp retro roller lifters, Comp pro magnum 1.6 RRs, Comp hi-tech 1 piece chromemoly pushrods

I have a 700R4, and it will have a 3000rpm stall. How streetable or unstreetable would this setup be, and how long do you think it would live? Is it grose over-camage? I'm aiming for 400rwhp. Any comments or suggestions are appreciated.

Stekman

Not sure what the cam specs are for either of those are, however, I do know that power is more easily made when better heads are used.

My vote goes to AFR/Miniram combo.

Hg

GM847: 232/242 - .539/.558 - 112 LSA

CC306: 230/244 - .510/.540 - 112 LSA

thirdgen88

The miniram won't bolt up to the E-Tec heads though... It will work on the GM Fastburn heads, but not standard Vortec heads (or E-Tec).

305RSlc

What's the difference between Fastburn heads and regular vortecs other than the metal they are cast with, valve size, and runner volume? And, isn't the E-Tec just Edelbrock's version of an aluminum vortec head?

TPIJeep

Whats the dome cc volume? I think your getting into a high compression situation. The afr 210's with the 76 cc chamber may be a good way to go but we need to figure you actual compression ratio first.

TPIJeep

Just did some calculations,

If the dome volume is say only 6cc
Head gasket thickness or .040"
Head gasket bore of 4.080"
Piston down bore at TDC of .005"

If your head chamber is 76cc your looking at 10.14
If your head chamber is 70cc your looking at 10.88
If your head chamber is 67cc your looking at 11.30

Don't try and leave the piston down bore at TDC any more then .005" because you will have an incurable ping on 93 octane due to the large quench gap.

Now if you go with a 2 valve relief piston with say 3cc of valve relief

76cc gets you 9.21
70cc gets you 9.80
67cc gets you 10.14

Hope this helps... btw I just got my AFR 210's and they are extremely nice!

thirdgen88

Well, the fastburn heads are also drilled for the standard patten.. The vortec heads (or e-tec) are not.. I emailed TPIS and they said, well, here's the quote:

"The Mini Ram III will not bolt up to a vortec head without drilling the head and tapping it for new bolt holes. " -TPIS

1320 Right Ln.

For a 355 motor, you really would be better off with less than 195-200 cc intake ports on the heads. you'll probably see more overall torque power with something like 170-180 cc's. combine that with a tpis miniram... and that'll be some awesome velocity, and more than enough flow. Just a better combination of parts IMHO. Oh, n' that GM 846 cam looks nice, I was really thinking about getting it.

305RSlc

He makes a good point. In Super Chevy, their dyno mutt "Spot" was tested with E-Tec 200 and E-Tec 170's. With the 200's it was run with a Victor Jr. intake. With the 170's it was run with an air gap...I know where comparing apples to oranges here since this is carb but still. The end result was that the 170's actually made more overall power, more peak power, and more power under the curve than the E-Tec 200's.

HiTech5

iTrader: (4)

I like the MiniRam but would go with AFR 180 heads and Competition port if $ allows. I would also stay away from the 306 cam because of the extra long exhaust duration. Go with a Comp custom ground Hyd. Roller 230/230 @.050 112 lsa installed between 109-110.

The AFR heads work well with a single patter grind.

Try to go with a flattop piston and get the chamber down to 60-62cc. Zero deck the block and use a .040 head gasket. You will get the benefit of high compression and ability to run pump fuel.

www.geocities.com/dzperf