Additional recommended changer when going to a Miniram?
Thread Starter
Drifting
Joined: Dec 2005
Posts: 1,309
Likes: 20
From: Woodstock Georgia
Additional recommended changer when going to a Miniram?
What other changes should be made to my 86E engine if I decide to go with a Miniram install?
Would going to going to hydraulic roller lifters and camshaft be adviseable given the extra useable rpm range? I know that a camshaft is necessary to take advantage of the increase power range, but is it necessary to switch from tappet to H/R?
Any changes I would need to make inside the block? Engine has 134,000 miles, Vortech 10 psi blower and such, but is stock internally.
Would going to going to hydraulic roller lifters and camshaft be adviseable given the extra useable rpm range? I know that a camshaft is necessary to take advantage of the increase power range, but is it necessary to switch from tappet to H/R?
Any changes I would need to make inside the block? Engine has 134,000 miles, Vortech 10 psi blower and such, but is stock internally.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
wow.
This is opening a can of worms...
If you are doing all of that, I would go ahead and build up a one piece rear main block. Seriously. It will have the hydraulic roller lifters and aluminum heads.
Then you can build the internals to support that Vortec... I can't imagine what your ring lands and grooves must look like...
This is opening a can of worms...
If you are doing all of that, I would go ahead and build up a one piece rear main block. Seriously. It will have the hydraulic roller lifters and aluminum heads.
Then you can build the internals to support that Vortec... I can't imagine what your ring lands and grooves must look like...
Thread Starter
Drifting
Joined: Dec 2005
Posts: 1,309
Likes: 20
From: Woodstock Georgia
I would rather not pull the engine (don't ask me why, I've done it before, just such a hassle). I will need to switch to forged pistons at that rpm (12 psi with this pulley), but would like to keep the stock C/R of 9.0:1. Naturally, I would hone the cylinders at that time. That intake, with this blower, should yield around 525 chp.
I may even do some slight porting on the stock heads, and throw on some 1.600" exhaust vavles. I really didn't know if the tappet style lifter would efficiently support that type of rpm (+/- 6200). I have a new set already, with springs, so I just wanted to be sure.
Any recommendations for a good pistion set?
I may even do some slight porting on the stock heads, and throw on some 1.600" exhaust vavles. I really didn't know if the tappet style lifter would efficiently support that type of rpm (+/- 6200). I have a new set already, with springs, so I just wanted to be sure.
Any recommendations for a good pistion set?
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
What other changes should be made to my 86E engine if I decide to go with a Miniram install?
Would going to going to hydraulic roller lifters and camshaft be adviseable given the extra useable rpm range? I know that a camshaft is necessary to take advantage of the increase power range, but is it necessary to switch from tappet to H/R?
Any changes I would need to make inside the block? Engine has 134,000 miles, Vortech 10 psi blower and such, but is stock internally.
Would going to going to hydraulic roller lifters and camshaft be adviseable given the extra useable rpm range? I know that a camshaft is necessary to take advantage of the increase power range, but is it necessary to switch from tappet to H/R?
Any changes I would need to make inside the block? Engine has 134,000 miles, Vortech 10 psi blower and such, but is stock internally.
Hydraulic roller (retro fit) is flat out better than a flat tappet though. If the budget will allow it, it should be a worthwhile swap. I try to use the retro stuff, even in a 1 pc seal roller block. Factory gm roller lifters are huge and heavy.
Thread Starter
Drifting
Joined: Dec 2005
Posts: 1,309
Likes: 20
From: Woodstock Georgia
Ah, Pete, since you're here anyway, it has been recommeded that I may need to switch to a blueprinted A-4 tranny. Is that something that you could perform to my stocker? It probably needs a rebuild anyway.
Last edited by silver86; Dec 22, 2006 at 01:25 PM.
Melting Slicks
Joined: May 2001
Posts: 3,270
Likes: 26
From: Winchester VA
Cruise-In V Veteran
What about heads?
The blower can overcome a lot flow limits from your heads but better couldn't hurt, especially since the air is going to move through the intake much better. And with the blower you could probably achieve great results with a nice set of inexpensive iron units from Dart or Brodix. Of course if the budget allows you could go way over that, but it may not be necessary. (I am assuming you have untouched early 86 iron heads)
These would also go a long way towards keeping up with MR's ability to flow at higher revs.
The blower can overcome a lot flow limits from your heads but better couldn't hurt, especially since the air is going to move through the intake much better. And with the blower you could probably achieve great results with a nice set of inexpensive iron units from Dart or Brodix. Of course if the budget allows you could go way over that, but it may not be necessary. (I am assuming you have untouched early 86 iron heads)
These would also go a long way towards keeping up with MR's ability to flow at higher revs.
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Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
my website has my opinion on it
i think it needs a whole reworked bottom end to last with what you have in mind
no, a roller is not necessary....you can get a tappet grind
i think it needs a whole reworked bottom end to last with what you have in mind
no, a roller is not necessary....you can get a tappet grind
Thread Starter
Drifting
Joined: Dec 2005
Posts: 1,309
Likes: 20
From: Woodstock Georgia
All of this, of course, depends on my compression test later today (found my PCV popped out of my valve cover). Thanks for all the suggestions.
