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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
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306 build, help needed

  • Thread starter Thread starter 88blowngt
  • Start date Start date May 16, 2011

88blowngt

New Member
Jun 29, 2009
68
0
0
Dover, Delaware
May 16, 2011
#1
  • May 16, 2011
  • #1
Hello everyone,

Its finally that time to build a motor and I have a base idea of what I want and could use the veterans advice around here to fill in the blanks. I want to build a supercharged 306. I figured starting with an end goal, you pick the parts to meet that goal. Well the goal is to have fun on the stock block and get some life out of it. The goal is somewhere between 400-440 rwhp and spinning it to 6-6200.

I've been thinking about the trick flow FAC 190 cc heads, with a custom cam and matching valve train and an intake to match accordingly. A vortech trim which I've narrowed down but not completely certain to the V2-SCi trim or the V3-SCi trim, differences being discharge exit, the silent operation, internal lubrication of the V3 and vortech claiming the impeller efficiency of the V3 trim is slightly better.

Anywho, I'd appreciate any help, advice or opinions.
 

88blowngt

New Member
Jun 29, 2009
68
0
0
Dover, Delaware
May 17, 2011
#2
  • May 17, 2011
  • #2
Bump, I got an opinion from someone on another forum that the FAC heads are too big to reach my goal and I can get away with the TW 170 heads and the same boost.
 

88blowngt

New Member
Jun 29, 2009
68
0
0
Dover, Delaware
May 20, 2011
#3
  • May 20, 2011
  • #3
Last bump
 

giddyup306

Founding Member
Oct 22, 2002
3,041
2
59
May 20, 2011
#4
  • May 20, 2011
  • #4
Not trying to be rude, but what exactly is your question?
 
B

bgoins

Member
Feb 23, 2009
130
0
16
hampton roads, virginia
May 20, 2011
#5
  • May 20, 2011
  • #5
I think the 190 TW FAC heads are a fine choice
 

90 lx convert

Stanger
Founding Member
Aug 13, 1999
926
1
18
Falling Waters Wv.
May 21, 2011
#6
  • May 21, 2011
  • #6
Well, the blower will hope overcome a smaller head. The advantage to using a smaller head would be better throttle response at lower rpms. Make sure you give your cam guy all your specs for your setup as the port volume of the head will determine his design. Head gaskets will be crucial too. Use a stud kit for the heads as the stock block doesn't have much deck reinforcing. The big thing is clamping force to make sure it doesn't lift the head under boost. Been there. The limit of the stock block is debatable, a girdle will help. I split my stock block right up through the cam bearings at a NMRA race at Maple Grove five years ago. That was about 400hp to the crank at ten PSI. Block prep will help too, deburr it well and chamfer all sharp edges and the oil drain holes in the lifter valley as that will help return the oil faster. Good luck. Mike
 
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