My HSR modification
Le Mans Master
Joined: Jan 2002
Posts: 9,036
Likes: 13
From: Edmonton AB
Carroll Smith used to say he always packed a pair
and a spare when he wrote about the racer's inventory
of essentials.
I see the pair, so where is the spare?
Looks like you may have the winning ticket here. Nice work.
.
and a spare when he wrote about the racer's inventory
of essentials.
I see the pair, so where is the spare?
Looks like you may have the winning ticket here. Nice work.
.
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Originally Posted by MrNuke
Awesome, but one problem... The engine moves and shakes enough to offset that 1/8"... did you calculate for that ?
Le Mans Master
Joined: Jan 2002
Posts: 9,036
Likes: 13
From: Edmonton AB
He still has an ace up his sleeve. The ribs on the top can
probably stand to be milled if required. Not to mention that
he may still have room to drop the plenum further.
JoBy, if you don't need to mill the top, give some consideration
to welding dummy bolts into place on top of the plenum.
Imagine how this will confound those who think they
know their C4 fitments and are left to wonder how come
the HSR works for you.
Then Holley won't have called it the Stealth Ram for nothing.
.
probably stand to be milled if required. Not to mention that
he may still have room to drop the plenum further.
JoBy, if you don't need to mill the top, give some consideration
to welding dummy bolts into place on top of the plenum.
Imagine how this will confound those who think they
know their C4 fitments and are left to wonder how come
the HSR works for you.
Then Holley won't have called it the Stealth Ram for nothing.
.
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Advanced
Joined: Sep 2003
Posts: 71
Likes: 0
From: Elmira NY
Good way to go man.... I've played with plenty-o-holley stealth rams and shortened them and made them fit where they do not belong.
I'll have to measure the HSR in the shop and see if the single plane conversions will fit under that hood as well if you have 8cm of area above the base. I've had better results with carb based race manifolds (better or more flow when ported and the intake bolted on to 300cfm heads) and have guys asking me if they fit or not, guess I will have to check now!
Good work keep it up.
Bret
I'll have to measure the HSR in the shop and see if the single plane conversions will fit under that hood as well if you have 8cm of area above the base. I've had better results with carb based race manifolds (better or more flow when ported and the intake bolted on to 300cfm heads) and have guys asking me if they fit or not, guess I will have to check now!
Good work keep it up.
Bret
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Originally Posted by 89 Paul in Cal
He's doing a 4+3 to ZF6 swap? 
J/K Kevin
J/K Kevin
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Originally Posted by MrNuke
Awesome, but one problem... The engine moves and shakes enough to offset that 1/8"... did you calculate for that ?
I have also finished the base. It was a bit high when looking thru the throttle holes so I ground off there. Other than that all the runners are full length.
You got me thinking now 
6th Gear
Joined: Apr 2005
Posts: 6
Likes: 0
From: Iowa
I think I'm missing how you mount the plenum to the base now. Are you welding it? Also, why not just mill the runners down? Seems to me that would be the easier solution. Fabbing up a way to mount the fuel rails as mentioned previously can't be too hard.
Advanced
Joined: Sep 2003
Posts: 71
Likes: 0
From: Elmira NY
Originally Posted by Sandmann120
I think I'm missing how you mount the plenum to the base now. Are you welding it? Also, why not just mill the runners down? Seems to me that would be the easier solution. Fabbing up a way to mount the fuel rails as mentioned previously can't be too hard.
It takes way more work to mill the runners down that much. Been there done that.
Bret
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
I am going to weld them together.
If you have a CNC mill with the correct programming it would be very easy to do the main part of the plenum modification.
It was not even that bad to do by hand with the air tool grinder I used. As it is now is not even a full weekend of work.
If you have a CNC mill with the correct programming it would be very easy to do the main part of the plenum modification.
It was not even that bad to do by hand with the air tool grinder I used. As it is now is not even a full weekend of work.