Low block hemi headers on B body
#2668212
06/21/19 02:59 AM
06/21/19 02:59 AM
|
Joined: Oct 2017
Posts: 14 CALIFORNIA
X9 X3 R/T
OP
member
|
OP
member
Joined: Oct 2017
Posts: 14
CALIFORNIA
|
Hi there, 1st post, long time lurker looking for an answer that will save my back and some friendships in the process.
I have a Stage V hemi conversion kit that I am working on. I know, not a real hemi, not a strong block, ect. I have always wanted one and never seem to be able to find a "real" 426 for anything that resembles a reasonable price. So, I found this kit that I have long known about for a deal. So here I am with 2 complete heads and a new LOW deck intake from StageV, a very nice piece by the way. However, the heads have a low port. If they had a high port, a standard 426 header would fit with my 400 block. I called TTI and they said they have never fitted a header to this combo and good luck. I have a 520 stroker wedge in the car now with 2 1/8 TTI headers and I'm trying to measure and picture the tubes 3/4" down and in. It looks promising, but that doesn't mean s&*t in the real world. Before I have to pull the current motor, mock up a block with heads, bellhousing and transmission and drop into the car. Has anyone really done this? I haven't built a short block yet so I am not really tied to having to make it work. However, the intake would cost $550 to replace with a RB one and the guy before me paid $650 for the current one. I would be inclined to make use of it. I have both a 400 and 440 block either way. Thanks for the time. Mike
|
|
|
Re: Low block hemi headers on B body
[Re: X9 X3 R/T]
#2668214
06/21/19 03:27 AM
06/21/19 03:27 AM
|
Joined: Feb 2006
Posts: 604 TN
1DGEMAN
mopar
|
mopar
Joined: Feb 2006
Posts: 604
TN
|
I applaud you for doing something different. I always wanted to do a 400 block with the Hemi conversion heads in an A body. You can always have headers made on the car. Good Luck with your combo.
Real Men shift for themselves
|
|
|
Re: Low block hemi headers on B body
[Re: X9 X3 R/T]
#2668504
06/21/19 08:18 PM
06/21/19 08:18 PM
|
Joined: Oct 2007
Posts: 4,205 New York
polyspheric
master
|
master
Joined: Oct 2007
Posts: 4,205
New York
|
What's the goal? Nothing made from a B block will inherit the huge volume of data, reccos, tune-up specs that a 426 RB will (not re-inventing the wheel). Scaling down the existing dimensions (especially de-stroking) has disappointed many, many people going back over 80 years, including Chrysler and Harley-Davidson. Among those that will need A > B comparison, if not actual tweaking, are: different manifold characteristics, both plenum volume and runner length rod ratio intake:exhaust port flow bias spark advance cam LSA and install point crankcase pumping piston dome shape w/r/t overlap breathing and spark flame front
Boffin Emeritus
|
|
|
|
|