GMMG Phase Breakdown?
GMMG Phase Breakdown? I was wondering if anyone had the breakdown of what GMMG did to each car in their respective phases?
Specifically how is a phase I Berger or Tom Henry car achieving 380hp/400tq with a lid and a catback? Did they do motor work as well?
What did the Phase II involve?
Specifically how is a phase I Berger or Tom Henry car achieving 380hp/400tq with a lid and a catback? Did they do motor work as well?
What did the Phase II involve?
On The Tree
Joined: Aug 2007
Posts: 178
Likes: 3
From: Balsam Lake, WI
Jim,
Thank you for the info. I frequent and drool over your site a lot! I was really just wondering what else they did to get the 380/400 mark. I can't see a MTI lid and a cat-back producing that kind of horsepower. I am wondering if they put LS6 camshafts in the phase I's and then did the heads on the II's
BTW when you want to part ways with #84 Im your huckleberry
Thank you for the info. I frequent and drool over your site a lot! I was really just wondering what else they did to get the 380/400 mark. I can't see a MTI lid and a cat-back producing that kind of horsepower. I am wondering if they put LS6 camshafts in the phase I's and then did the heads on the II's
BTW when you want to part ways with #84 Im your huckleberry
Jim's site should have the information on there.
Or, you can check out the base package on here http://www.gmmginc.net/
Or, you can check out the base package on here http://www.gmmginc.net/
Yea thats what I am finding, a lid and cutback will not net 380 at the crank lol. If you look closely at the pictures it appears they changed either the entire MAF or just the MAF ends because they go around the lid instead of inside the like like a normal SS would.
I am wondering if underdrive pulleys maf and tuning would give them the 380 flywheel hp mark.
I am wondering if underdrive pulleys maf and tuning would give them the 380 flywheel hp mark.
Staging Lane
Joined: Dec 2005
Posts: 87
Likes: 0
From: Iowa
FYI, Matt built all of the GMMG cars with a little more horsepower than advertised. He figured if anyone put one of the cars on someone else's dyno and the numbers were less than advertised he would never hear the end of it.
Trending Topics
Phase I-
Whisper Air Lid
Upgraded MAF Housing
ASP Underdrive
Ported Exhaust Manifolds
GMMG Chambered Exhaust
Custom Programming VIA LS1 Edit (All that was available at the time)
ZL1 and Dick Harrell Camaros Phase I was an actual LS6 Crate Engine from GM
Phase II added
long tube Headers
Catted Y pipe
Upgraded Cylinder Heads
Custom Camshaft
Hardened Pushrods
Ported Throttlebody
All advertised #s from GMMG were at the FLYWHEEL...
Hope this helps
Whisper Air Lid
Upgraded MAF Housing
ASP Underdrive
Ported Exhaust Manifolds
GMMG Chambered Exhaust
Custom Programming VIA LS1 Edit (All that was available at the time)
ZL1 and Dick Harrell Camaros Phase I was an actual LS6 Crate Engine from GM
Phase II added
long tube Headers
Catted Y pipe
Upgraded Cylinder Heads
Custom Camshaft
Hardened Pushrods
Ported Throttlebody
All advertised #s from GMMG were at the FLYWHEEL...
Hope this helps
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Staging Lane
Joined: Dec 2007
Posts: 58
Likes: 0
Hey Ron, is there any chance that you would remember where GMMG got the Blackbird emblems. Me and other Blackbird owners would like to get some extras. Thanks.
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Year One Blackbird #4 380HP
35th Anniversary edition #9 380HP
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Year One Blackbird #4 380HP
35th Anniversary edition #9 380HP
