[glenB]

Originally Posted by Mityguy

I've not seen it yet. This is the Cam I went with
https://www.summitracing.com/parts/CCA-624-500-13

How do you like it?

[glenB]

Originally Posted by kropscamaro16

anybody seen this yet?


PRODUCT DESCRIPTION
LT1 Head Kit

Increase your already-strong LT1 with these CNC Ported Heads and camshaft designed specifically for direct injection. This is the first "Hot Cam" for the Gen V LT1.
Specs:
Duration @ .050 Lift(deg) - I:.577 / E:.577
Maximum Lift (in) W/ 1.7 rocker - I:228 / E:248
Lobe Separation (deg) - 116.5


NOTE:
Installation of this kit will affect engine variable valve timing and active fuel management operation. Re-calibration is required for accurate engine operation (Not available from GM, must be tuned by an aftermarket source)


http://www.thatgmpartsguy.com/perfor...25?parent=1023

I saw it a while back, but I have to believe with that exhaust lift, based on other cams listed for the LT1, the VVT and AFM will have to be deleted, and the rocker ratio for the LT1 is 1.8, not 1.7 http://www.superchevy.com/news/ghtp-...1-small-block/

Further, I have concerns about its ability to pass emission testing.

[ender2664]

Originally Posted by oldman

yep that's what they said 15 years ago too. Like I said it went on for years and every new and better widget would fail in time and I'm not talking 80,000 miles here. My Honda can go to 10,000 RPM with no valve float, so it ain't like I don't know anything about valve train.

DOHC

just wait for pneumatic valves

[oldman]

The spring technology is the same, harmonic load same, the delta forces loads on lift are much much much greater at 10,000 vs 7,000 rpm, so are the harmonics on deceleration.

They been talking about pneumatic valves since I was a boy, really the old cam is cheap and makes good power...

[oldman]

Originally Posted by glenB

How do you like it?

Basic Operating RPM Range:
1,400-6,600

Duration at 050 inch Lift:
210 int./222 exh.

Advertised Duration:
262 int./274 exh.

Valve Lift with Factory Rocker Arm Ratio:
0.572 int./0.529 exh

that cam is a very small step up from stock. I'd go with the Hot Cam...

[glenB]

Originally Posted by oldman

that cam is a very small step up from stock. I'd go with the Hot Cam...

Yes it is, but if I do a cam, that's really all I'd be looking for. The GM Hot Cam is way more than I'd like. At most I'd do a something around 215 @0.50 nothing really big, just more than stock.

[oldman]

Originally Posted by glenB

Yes it is, but if I do a cam, that's really all I'd be looking for. The GM Hot Cam is way more than I'd like. At most I'd do a something around 215 @0.50 nothing really big, just more than stock.

https://www.summitracing.com/parts/c...2-13/overview/

036584267027
Cam Style:
Hydraulic roller tappet
Basic Operating RPM Range:
1,600-6,750
Intake Duration at 050 inch Lift:
214
Exhaust Duration at 050 inch Lift:
226
Duration at 050 inch Lift:
214 int./226 exh.
Advertised Intake Duration:
266
Advertised Exhaust Duration:
278
Advertised Duration:
266 int./278 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.572 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.529 in.


I'm liking the lift for a longterm cam.

[ender2664]

Originally Posted by oldman

The spring technology is the same, harmonic load same, the delta forces loads on lift are much much much greater at 10,000 vs 7,000 rpm, so are the harmonics on deceleration.

They been talking about pneumatic valves since I was a boy, really the old cam is cheap and makes good power...

They are already in automotive use and there is a company named free valve you may want to look at.
Just a matter of time for them to trickle down like most great technologies do.

[WhyUMad1LE]

I predict that the Z/28 will get the heads/cam LT1.

[ULTRAZLS1]

Originally Posted by WhyUMad1LE

I predict that the Z/28 will get the heads/cam LT1.

Same here been saying it for a while.

[oldman]

I think it will be a 7.0 liter.. a proven torque monster

[oldman]

Originally Posted by oldman

https://www.summitracing.com/parts/c...2-13/overview/

036584267027
Cam Style:
Hydraulic roller tappet
Basic Operating RPM Range:
1,600-6,750
Intake Duration at 050 inch Lift:
214
Exhaust Duration at 050 inch Lift:
226
Duration at 050 inch Lift:
214 int./226 exh.
Intake Valve Lift with Factory Rocker Arm Ratio:
0.572 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio:
0.529 in.

stock is
200 / 207 on a 116.5 lobe center
.551 / .524

[jayb998]

i got this kit installed with long tubes and full exhaust and very happy with the price and results sounds awesome and dealer installed and backing the factory warranty

[kropscamaro16]

Originally Posted by jayb998

i got this kit installed with long tubes and full exhaust and very happy with the price and results sounds awesome and dealer installed and backing the factory warranty

oh yea what was the price and how much power you make?