ali123

3.0 stroke
4.065 bore
311.48 cid
Mamo heads
ITB
forged internals
Solid Roller Cams setup to hit peak hp at 7800RPM

I know nothing is accurate and there's more details needed but I'm just looking for a guesstimate on what you guys think.

Thank you

gnx7

iTrader: (28)

You could easily run a standard stroke crank (3.62") and spin it to 8000rpm and gain back more cubic inches. You are looking into spending a lot more for custom everything to achieve your combo.

For reference an all out 358ci (4.190" bore/3.27" stroke) motor I bought that spun to 9500rpm made 625rwhp with a single plane AllPro intake/AllPro 430cfm heads.

RobZ is selling his 388ci full race motor and also the ITB setup that was on it for extra. The ITB's were further massaged and tweaked to flow more and work properly.
http://www.corvetteforum.com/forums/...-for-sale.html

redtan

iTrader: (5)

Without knowing what heads, what intake, what cam, what compression, what tune...it can be anywhere from 300hp to 600hp.

dogsballs

The aim of destroking it is to allow more revs, but you cap it at 7800!? This will really restrict hp

As mentioned you could spin a factory 3.662 crank all day at 7800

ali123

Its true the reason why I made this thread is to see if I should pony up more $$$ and increase the rpm limit to 8500 or 9000. Why I cap it at 8000 is because from what I've heard from atleast one builder is reliability goes south after that. I'd love to go higher though and dont mind dry sump etc but I Dont want to be wrenching my car every month. Goal is 600HP. I already have the internals got them for a good deal from my friend. Its just the head I have to worry about.

gnx7

iTrader: (28)

If this a street car or race car? If street you have no biz spinning it over 8000rpm for longevity. Consider new springs a tune up every 10-20k miles... 8000rpm+ plan on lots of wrenching.

If you don't have Ti valves in the heads... You better put those on the list also.

Is your only goal 600hp and 8000rpm+? You could make 800hp with a 4" stroke.... Waaaay more torque and still spin it to 7500+ with the proper heads and more reliable.

The brighter the flame.... The shorter the candle lasts.

ali123

It's street which is why I set it to 8000. I already have the bottom end with the 3.0 stroke bought it from someone else for a good deal. But yes my goal is just 600HP. It'll be going into a 2200LB car.

Thank you

KW Baraka

iTrader: (7)

You posted that you're going with Mamo heads.....which heads is he doing for you?

What's your compression ratio gonna be?

Do you have cam specs available?

KW

ali123

MMS 220 heads. Compression I think will be 11:5 and cam specs wise I don't but lets say a solid roller that can make peak power at around 7800.

Thank you