Project "Blown HD" my 6/8 drop/shortblock/heads/cam/blower/tranny install
11-12-2006, 09:34 PM
#342
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Have the measurements on my pinion angle and trans angle.
Transmission angle: 4.5* (downward slope)
Axle pinion angle (with 2* shim installed): 1.5* (upward slope)
Looks like the rear needs another 2-3* of shim work to achieve an equal but opposite 4.5* positive on the axle pinion angle.
Will have to buy some leaf spring retaining pins that have a longer pin at the bottom.
Does anyone sell .5* shims? Would like to get the axle pinion angle to 4*. This will allow the pinion to get to 4.5* under hard acceleration.
Or should I just go for a 5* shim and set it perfect from a stand still?
Anyone know this?
Looks like shackle drop turned out to be a mess of trouble for my truck.
I have it figured out to what I need, but who sells what I need?
Jim
Transmission angle: 4.5* (downward slope)
Axle pinion angle (with 2* shim installed): 1.5* (upward slope)
Looks like the rear needs another 2-3* of shim work to achieve an equal but opposite 4.5* positive on the axle pinion angle.
Will have to buy some leaf spring retaining pins that have a longer pin at the bottom.
Does anyone sell .5* shims? Would like to get the axle pinion angle to 4*. This will allow the pinion to get to 4.5* under hard acceleration.
Or should I just go for a 5* shim and set it perfect from a stand still?
Anyone know this?
Looks like shackle drop turned out to be a mess of trouble for my truck.
I have it figured out to what I need, but who sells what I need?
Jim
11-21-2006, 01:02 PM
#345
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Originally Posted by moregrip
My big install is just around the corner now, as some of you know, it's been almost 2 yrs in the making. I did my best, with the help of a few experts, in choosing a well thought out combination/package. Cam specs have changed 100 times, and I've had no less than 3 cams in my possession, all uninstalled.
So in keeping with my goals and engine parameters, the basic spec is as follows.
-Heads, WCCH 035 Stage 2's, 73.5cc, 2.02 1.57 (roughly 9.0-1 CR w/stock Head Gaskets)
-Cam, EDC(Flowtech), 224/236 .600/.590 @ 116LSA (powerband is 2000-6400 rpm on a 346-364ci engine)
-Connecting Rods, Stock w/LPE rod bolts (same as Katech)
-Rocker Arms, Stock
-Lifters, Stock
-Pushrods- Comp Cams 7.4
-Timing Chain- Comp Cams adjustable single roller ( I will be degreeing the Cam)
-Blower, Magnuson MP122HH @ 10lbs of boost
The exhaust system is already installed, SW 1 3/4, 3" collectors, Magnaflow 3" dual out the back.
On the DynoSim Software this combo is making between 750-850fwhp/fwtq, depending on boost levels, 10-14psi range. Peak TQ occurring @ 2000-2500rpm, Peak HP occurring @ 6000rpm (extending to 6500rpm). Obviously that's not RealWorld so I will be sure to post results as the combination is tested in the appropriate sections.
Anyone interested in progress pictures during the install?
So in keeping with my goals and engine parameters, the basic spec is as follows.
-Heads, WCCH 035 Stage 2's, 73.5cc, 2.02 1.57 (roughly 9.0-1 CR w/stock Head Gaskets)
-Cam, EDC(Flowtech), 224/236 .600/.590 @ 116LSA (powerband is 2000-6400 rpm on a 346-364ci engine)
-Connecting Rods, Stock w/LPE rod bolts (same as Katech)
-Rocker Arms, Stock
-Lifters, Stock
-Pushrods- Comp Cams 7.4
-Timing Chain- Comp Cams adjustable single roller ( I will be degreeing the Cam)
-Blower, Magnuson MP122HH @ 10lbs of boost
The exhaust system is already installed, SW 1 3/4, 3" collectors, Magnaflow 3" dual out the back.
On the DynoSim Software this combo is making between 750-850fwhp/fwtq, depending on boost levels, 10-14psi range. Peak TQ occurring @ 2000-2500rpm, Peak HP occurring @ 6000rpm (extending to 6500rpm). Obviously that's not RealWorld so I will be sure to post results as the combination is tested in the appropriate sections.
Anyone interested in progress pictures during the install?
11-21-2006, 03:35 PM
#348
Originally Posted by zippy
Looks like you have some fun ahead of you. Tuning alone is going to be pretty fun. You're going to be like a kid at Christmas when you start... 
Last edited by moregrip; 11-21-2006 at 03:46 PM.
11-21-2006, 04:12 PM
#350
TECH Junkie
Are you going with the Evans coolant?I have found that with the Evans coolant/waterpump combo and 90mm throttle body,I can run as much as 29 degrees of timing with no KR at 100degrees ambient temp.I hope that will be helpfull with your tuning.