Gm847

[Boost Addict]

I'm going to have to disagree with everyone down on the 847. There is some bucking with it but not much, maybe cruising at 1500 rpm. The power loss down low isn't, I believe, as large as people as making it out to be. I can light up a set of Hoosiers without getting into boost. While I agree custom cams are better seeing as how they are built for what you have, the 847 is still a great cam.

[ThreeHonks]

I'm going to have to disagree with everyone down on the 847. There is some bucking with it but not much, maybe cruising at 1500 rpm. The power loss down low isn't, I believe, as large as people as making it out to be. I can light up a set of Hoosiers without getting into boost. While I agree custom cams are better seeing as how they are built for what you have, the 847 is still a great cam.

The GM847 isnt a bad cam. but its not going to provide the best results if using stock unported heads and shifting at only 6000 rpm. You will probably run worse in the quarter.

That cam needs higher RPM and ported heads drastically help. The 847 is one of the better off-the-shelf cams available today (still wayy better technology than that though)

[DETROITMUSCLE]

I'm going to have to disagree with everyone down on the 847. There is some bucking with it but not much, maybe cruising at 1500 rpm. The power loss down low isn't, I believe, as large as people as making it out to be. I can light up a set of Hoosiers without getting into boost. While I agree custom cams are better seeing as how they are built for what you have, the 847 is still a great cam.

Not to go completely off topic but why run such a massive cam in a FI car, I bet your leaving a lot of power on the table that way.

[Phantom409]

http://www.summitracing.com/parts/CCA-07-468-8/
It's the bottom one you posted and the same one I used to build Red's (Old Fart's) motor.
292 XFI HR 13 is the grind # and is what cams are known by.

Her motor isn't done breaking in but as of right now she is making 421 RWHP and 371 RWTQ.
Like I said, that cam is huge and likes to go through the gears, I know, I have driven it several times but I like it
It's street manners are decent but likes RPM's.
You will have to have a VERY good tunner to get this to work well for the street.
We spent 450 in just tunning alone on her car.

[Boost Addict]

Not to go completely off topic but why run such a massive cam in a FI car, I bet your leaving a lot of power on the table that way.

I went based upon what Crane told me.

[white97z28]

http://www.summitracing.com/parts/CCA-07-468-8/
It's the bottom one you posted and the same one I used to build Red's (Old Fart's) motor.
292 XFI HR 13 is the grind # and is what cams are known by.

Her motor isn't done breaking in but as of right now she is making 421 RWHP and 371 RWTQ.
Like I said, that cam is huge and likes to go through the gears, I know, I have driven it several times but I like it
It's street manners are decent but likes RPM's.
You will have to have a VERY good tunner to get this to work well for the street.
We spent 450 in just tunning alone on her car.

And thats just it i also have to take into acount the tune...where would i want to go any good places? Whats is the price difference between dyno and bench tune? What one would i want to look for?

[DETROITMUSCLE]

there are plenty of places around, but when your looking for a good tuner make sure you talk to other people who have had their cars tuned and how the drivability is. DO NOT get a mail order tune, that is a shot in the dark for any car and is very hit and miss. Also I would prefer a street tune as opposed to a dyno tune but either will be fine just as long as your happy afterwards. That being said I don't think you could ever go wrong with Stenod performance in Troy.

[JoeliusZ28]

I'm going to have to disagree with everyone down on the 847. There is some bucking with it but not much, maybe cruising at 1500 rpm. The power loss down low isn't, I believe, as large as people as making it out to be. I can light up a set of Hoosiers without getting into boost. While I agree custom cams are better seeing as how they are built for what you have, the 847 is still a great cam.

its a good cam, my concern of it is that its personality desires 6800 RPM shifts. For that to work best, you need to spend money on heads and a bottom end that can handle it. And if you dont spend money on the bottom end you will be doing so later when it breaks.

It's not a bad route if youve got the coin but i'd rather see a matched setup that will make [nearly] the same power at a lower RPM, and make it more reliably.

[Phantom409]

And thats just it i also have to take into acount the tune...where would i want to go any good places? Whats is the price difference between dyno and bench tune? What one would i want to look for?

Check around, talk to people but DO NOT spend your money on a mail order tune, it's a waste.
I'm on the west side and I LOVE Baker Eng., TJ is the whip!
But 2.5hrs drive for a tune is a bit far unless that is what you want o do?

I know the east side is PACKED with tuners so just ask around and get input

TJ can Dyno or street tune your car with the street tune costing less than the dyno because of setup reasons.
I do both because I like to have some #'s to go with my set up

Baker gets 5-600 for a dyno tune and a street tune is 250-3.
http://www.bakerengineeringinc.com/index.html

[Boost Addict]

Check around, talk to people but DO NOT spend your money on a mail order tune, it's a waste.
I'm on the west side and I LOVE Baker Eng., TJ is the whip!
But 2.5hrs drive for a tune is a bit far unless that is what you want o do?

I know the east side is PACKED with tuners so just ask around and get input

TJ can Dyno or street tune your car with the street tune costing less than the dyno because of setup reasons.
I do both because I like to have some #'s to go with my set up

Baker gets 5-600 for a dyno tune and a street tune is 250-3.
http://www.bakerengineeringinc.com/index.html

I make the 2.5 hour drive for TJ to tune my car. He deffinatley knows his stuff

[white97z28]

its a good cam, my concern of it is that its personality desires 6800 RPM shifts. For that to work best, you need to spend money on heads and a bottom end that can handle it. And if you dont spend money on the bottom end you will be doing so later when it breaks.

It's not a bad route if youve got the coin but i'd rather see a matched setup that will make [nearly] the same power at a lower RPM, and make it more reliably.

See and thats why i like the cam im looking at...but yea if did have the coin to do heads cam and forged internals i might go with the 847 but i just would rather have a cam that doesnt need the higher rpms.

Check around, talk to people but DO NOT spend your money on a mail order tune, it's a waste.
I'm on the west side and I LOVE Baker Eng., TJ is the whip!
But 2.5hrs drive for a tune is a bit far unless that is what you want o do?

I know the east side is PACKED with tuners so just ask around and get input

TJ can Dyno or street tune your car with the street tune costing less than the dyno because of setup reasons.
I do both because I like to have some #'s to go with my set up

Baker gets 5-600 for a dyno tune and a street tune is 250-3.
http://www.bakerengineeringinc.com/index.html

Who all on here has gone to TJ because if he is very well known on here and he is good...a 300 dollar street tune sounds in my price range. and would be worth the drive.

[Boost Addict]

See and thats why i like the cam im looking at...but yea if did have the coin to do heads cam and forged internals i might go with the 847 but i just would rather have a cam that doesnt need the higher rpms.



Who all on here has gone to TJ because if he is very well known on here and he is good...a 300 dollar street tune sounds in my price range. and would be worth the drive.

Me.

[meissen]

My dad and I both had our cars tuned by Steve in Port Huron. He's a sponsor on the site and also works at Vector Motorsports in Clinton Township. He does street tunes and dyno tunes. The guy really knows his stuff and does a great job.

[white97z28]

http://www.summitracing.com/parts/CCA-K07-467-8/

Is this a good kit or should i just piece it all together?

[Phantom409]

LSX Dreamer had his done by TJ.
Not sure where he lives but I know he isn't in GR.

--Double post auto merged--

http://www.summitracing.com/parts/CCA-K07-467-8/

Is this a good kit or should i just piece it all together?

Sets like that are all matched meaning that the Springs and cam are made for each other.

It will cost you more to buy everything item by item than it would buying the kit.