Need some help with cam
Thread Starter
Racer
Joined: Oct 2005
Posts: 270
Likes: 8
From: Gilbert, AZ
Need some help with cam
The PO had some work done to the car and I am trying to figure out what I have.
He have me the box for the cam and it says Part # 271 LS1 112 degrees HR 818 and HR 744. The box says it's an Iskenderian cam.
He couldn't get it timed correctly or get it to start so he took it to a local shop and it reads on the work order they set it at 109 degrees.
Car has a nice lope but horrible gas mileage and smells very rich. No low end to speak of but hits hard at 3600.
Car is an 07 Z51 M6. Has Stainless works headers and x pipe. BB exhaust and Vararam CAI.
My goal is better gas mileage, better low end, still would like the lope and within a year it will be supercharged.
He have me the box for the cam and it says Part # 271 LS1 112 degrees HR 818 and HR 744. The box says it's an Iskenderian cam.
He couldn't get it timed correctly or get it to start so he took it to a local shop and it reads on the work order they set it at 109 degrees.
Car has a nice lope but horrible gas mileage and smells very rich. No low end to speak of but hits hard at 3600.
Car is an 07 Z51 M6. Has Stainless works headers and x pipe. BB exhaust and Vararam CAI.
My goal is better gas mileage, better low end, still would like the lope and within a year it will be supercharged.
Last edited by quadracr; Jan 14, 2014 at 03:51 PM.
Safety Car
Joined: Jan 2004
Posts: 4,974
Likes: 14
From: Pinellas Park Fl
St. Jude Donor '08-'09 & '12, '14
All of Isky's Off-the-Shelf LS grinds start with 271.
The HR744 is a custom grind with advertised duration of 288 240 @ .050 .605 lift.
The HR818 is not listed. This can probably has about 20-25* of overlap at .050.
Being on a 112 and installed on a 109 explains the lope and bad gas mileage. This cam is wrong for your objectives and future use
The HR744 is a custom grind with advertised duration of 288 240 @ .050 .605 lift.
The HR818 is not listed. This can probably has about 20-25* of overlap at .050.
Being on a 112 and installed on a 109 explains the lope and bad gas mileage. This cam is wrong for your objectives and future use
Burning Brakes
Joined: Jul 2013
Posts: 823
Likes: 7
From: Rosewood Heights IL
Briantooleyracing.com
Or
http://www.guerragroup.com/#!camshaft-help/c1mq5
Both are VERY good at what they do. I have a PatG (EPS) cam, and Brian tooley valvesprings. Brian is a great guy to deal with and has top quality parts.
My 230/238 cam from PatG makes great power, drives almost like stock, and leaves the valvetrain quiet.
Brian Tooley is beyond an expert in the field of LSx cylinder head and camshaft design.
You can't go wrong with either choice.
Or
http://www.guerragroup.com/#!camshaft-help/c1mq5
Both are VERY good at what they do. I have a PatG (EPS) cam, and Brian tooley valvesprings. Brian is a great guy to deal with and has top quality parts.
My 230/238 cam from PatG makes great power, drives almost like stock, and leaves the valvetrain quiet.
Brian Tooley is beyond an expert in the field of LSx cylinder head and camshaft design.
You can't go wrong with either choice.
