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High CR NA Motors

  • Thread starter Thread starter Kurt2002
  • Start date Start date Feb 11, 2007

Kurt2002

New Member
Jul 6, 2002
346
0
0
North Royalton, Ohio
Feb 11, 2007
#1
  • Feb 11, 2007
  • #1
Who is running high compression NA motors? Mine is 12:1 with VT Stage II cams. The heads are mildly ported with oversize valves. Just wondering what to expect rwhp with high cr motors.

Thanks
 

fast97gt

Active Member
Jan 2, 2007
1,082
2
49
north carolina
Feb 11, 2007
#2
  • Feb 11, 2007
  • #2
i dont no but i hope someone can enliten us, gettin a peice ready for the summer for my ride. .020 over, flat tops w valve releifs cause im running bigger valves, pap heads, custom aluminum rods, pi intake and 70mm tb just to start things off
 

Stan Weiss

Member
Dec 8, 2006
347
2
16
Philadelphia, PA
Feb 11, 2007
#3
  • Feb 11, 2007
  • #3
Theoretically going from 9.5:1 to 12:1 will give you in the area of a 5% HP increase.
 
G

GT04Mustang

New Member
Apr 24, 2005
55
0
0
Savannah Ga
Feb 12, 2007
#4
  • Feb 12, 2007
  • #4
Well I have 12.3:1 CR MMR Stg III Heads and Comp Stg 3 N/A Cam. On 93 pump gas w/ 12 degrees of total timing (Ping Very badly w/ more timing). I made 343 rwhp and 348 rwtrq, with stock intake and stock manifold.
 

LaserRed01GT

Banned
Oct 3, 2006
739
3
0
Clearwater, FL
Feb 12, 2007
#5
  • Feb 12, 2007
  • #5
GT04Mustang said:
Well I have 12.3:1 CR MMR Stg III Heads and Comp Stg 3 N/A Cam. On 93 pump gas w/ 12 degrees of total timing (Ping Very badly w/ more timing). I made 343 rwhp and 348 rwtrq, with stock intake and stock manifold.
Click to expand...

Decent numbers . Do you have any plans to upgrade the manifold and intake/plenum? Which TB are you using? I just met a guy Saturday night at a local meet with a very similar combination to yours but he had a P-51 intake and Accufab plenum/TB. He made 363 RWHP on a Dynojet. Stock water pump, stock oil pan, stock lot's of stuff.

What are the specs on your cams? Are they the XE278's?

Just imagine what kind of power these little motors can make with a roller rocker and a camshaft that is ground with more aggresive opening ramps to take advanatge of the roller tipped rockers. It won't be long before 400 is cracked with a n/a stroker with all the goodies and a sheetmetal intake.
 

Kurt2002

New Member
Jul 6, 2002
346
0
0
North Royalton, Ohio
Feb 12, 2007
#6
  • Feb 12, 2007
  • #6
LaserRed01GT said:
Just imagine what kind of power these little motors can make with a roller rocker and a camshaft that is ground with more aggresive opening ramps to take advanatge of the roller tipped rockers. It won't be long before 400 is cracked with a n/a stroker with all the goodies and a sheetmetal intake.
Click to expand...

already has, check modular depot, here the quote "I just found out from the shop that tunes my car that an employee just installed a 324 high compression motor in his and it made 417rwhp but can't remember the tq. Under his sig it says "fastest 2v na in the country." Said he's running low 10s off the gas. I'm heading up there next week for some tuning so I'll definately find out the details." & "He makes alittle more power now but has had some clutch issues and not run it lately. Latest time is 10.50 I believe. Once his car loses some weight it should pick up a couple tenths. I'm gonna talke to him friday so I'll find out where it stands."
 

LaserRed01GT

Banned
Oct 3, 2006
739
3
0
Clearwater, FL
Feb 12, 2007
#7
  • Feb 12, 2007
  • #7
Kurt2002 said:
already has, check modular depot, here the quote "I just found out from the shop that tunes my car that an employee just installed a 324 high compression motor in his and it made 417rwhp but can't remember the tq. Under his sig it says "fastest 2v na in the country." Said he's running low 10s off the gas. I'm heading up there next week for some tuning so I'll definately find out the details." & "He makes alittle more power now but has had some clutch issues and not run it lately. Latest time is 10.50 I believe. Once his car loses some weight it should pick up a couple tenths. I'm gonna talke to him friday so I'll find out where it stands."
Click to expand...

Very nice. I have seen quite a few guys back in Texas and a few here very close to the 400 mark with 2 valve headed n/a motors, but none over 400. Do you know any more details on this build or which shop did the build?
 

Kurt2002

New Member
Jul 6, 2002
346
0
0
North Royalton, Ohio
Feb 12, 2007
#8
  • Feb 12, 2007
  • #8
check modular depot, this site will not let me post a link from MD for some reason.
 

LaserRed01GT

Banned
Oct 3, 2006
739
3
0
Clearwater, FL
Feb 12, 2007
#9
  • Feb 12, 2007
  • #9
Kurt2002 said:
check modular depot, this site will not let me post a link from MD for some reason.
Click to expand...

In the email I got for your post, it included the link you tried to post and I just replaced the asterisks with m0dulardep0t.

I don't know why this site doesn't allow other sites links??
 
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