ported heads & cams..rev to 6500??
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98COBRA281
10 Year Member
go with an edelbrock mani, MHS stage 3+ cam, and spin it to 7000, im shifting at 7000 right now cause im having a fuel problem, 7200 will probably be my perfect shift point with the eddy intake, and MHS 3.5 cams.
The shortblock would be stock so I dont think what you suggested would work. lol. I chose the hardballr cause my buddy has one installed on his gt and the car is just sitting with a laundry list of things that need to be done to get it road worthy so I figured I'd take whatever I can get for free.
I just want something that will give me a little more power and let me rev higher since Ill soon be replacing my 3.73s with 4.10s.
I just want something that will give me a little more power and let me rev higher since Ill soon be replacing my 3.73s with 4.10s.
nickmckinney
Member
- Sep 25, 2009
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If you are pulling the heads, its not that much more work to pull the rods and pistons. Swapping in a set of 4V pistons with an intake notch and cheap forged rods is a night and day difference in what you can do cam and power wise.
PoppyMod
Member
Hi,
Your assembly of components is one thing, it's their designed intentions for the details that will help you make that goal.
Specifically, start with a billet ground cam (not stating your choice is not), whose events are designed for making power at your RPM goals. Match it with a high quality valve train designed to transfer the cam events to the valves. The heads have to be of such design as to flow at those RPMs. Obviously, the intake and injectors/carb need to be sized to meet the delivery of fuel.
So, it's matter of thinking it all through, and if those choices have the capability. You don't say "how much power".
Oh yeah, you can get there, but, will it hold together? Will it make the power(?) without looses due to weak spring pressures, improper length PRs, a deflecting non-billet cam, cheap lifters, and rockers.
That "tad more" is dependent on your attention to detail.
Good Luck!
Any 4v piston would do? Wouldn't that raise my compression to around 12:1 as well?
PoppyMod
Member
Wanting a CR of 12.1, what is the intended goal of this engine?
It takes knowledge of other issues than just pistons to make the CR you mentioned, not to mention, them all playing nice together.
It is common convention and erroneous thinking that we have the CR we we think we do. You have to do the math and pay the price.
good Luck!
98COBRA281
10 Year Member
you can spin the stock bottom end up to about 7k, and go with atleast 4.30's
exactly what im running!
nickmckinney
Member
- Sep 25, 2009
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Actually its around 11.5-11.8:1 and is the perfect compression ratio for a real street 2V on pump gas if you cam it correctly.
Mr. Rustypwnz
Advanced Member
Mr. Rustypwnz
Advanced Member
this be t3h truth, it works damn well.. if only i had the money to build me a 13.1-1 TFS head'd bitch thatd be awesome..
98COBRA281
10 Year Member
that makes me want to pull my heads off and weld the chambers, im only a tad over 10:1
nickmckinney
Member
- Sep 25, 2009
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that makes me want to pull my heads off and weld the chambers, im only a tad over 10:1
Deck the heads 30, deck the block 20, run a flattop piston, and its near 11.5 with the NPI but you better blueprint everything.
98COBRA281
10 Year Member
the heads have 5 off them, could i just weld up the chambers, and smooth it out to make the compression higher?
Mr. Rustypwnz
Advanced Member
just pull the motor and get some domes in the holes.. Oh and get a teksid or WAP while your at it.. that weight off the front makes a huge difference..
98COBRA281
10 Year Member
hell no! lol show me a pi headed car with 10:1 that makes 330 at the tire, and i cant use my cams in pi heads!
nickmckinney
Member
- Sep 25, 2009
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I tried that, get ready to replace all the valve seats after the chamber gets that much heat.........
I dunno, if I were going to all the trouble of rebuilding my shortblock, then my car better be making somewhere in the neighborhood of 500 ponies at the tires, preferably with some forced induction.
Why go to tons of trouble just to pick up 5 horses here, 2 horses there, etc. with each little mod.
Why go to tons of trouble just to pick up 5 horses here, 2 horses there, etc. with each little mod.
