New Heads for Mopar SB in SS
 

Just in case no one noticed, the SB Mopar can use the Magnum R/T heads in SS. I have a couple sets with matching manifold from T/STK before we got Aluminum heads. If you want info on this set up, let me know. I might save you some time and money. jefft@southlanddodge.com

Re: New Heads for Mopar SB in SS
 

Is this the head thats listed in the engine guide under P5007140.Are they worth the 5 extra HP and are they as good as the 308 head.

Re: New Heads for Mopar SB in SS
 

Yes

Re: New Heads for Mopar SB in SS
 

Jeff, I don't see these listed in the NHRA engine specs - what year 340's are they legal for?

Re: New Heads for Mopar SB in SS
 

RJ
They are listed at the bottom of the page.I just checked,1968 to 1975.Jeff did you get my e-mail.

Re: New Heads for Mopar SB in SS
 

Update: Thanks to all the guys who expressed an interest. From the information I got from NHRA, let me explain what I think I will do. The Magnum R/T head must match the LA head for whatever combo a racer claims. The heads I have are 2.02 1.60 with 180 runners and 8mm valve stem size. I have two sets; one ported by Ray Barton and one by McDowell and both have ported Mopar M1 manifold. We only ran the Barton heads which went 9.80 in Top Stock @ 2980 lbs. Duster body, 9 in tires, good driveline pieces, .525 cam with modified factory roller tappets, Comp Cam rockers, single 750. To qualify for SS, I will have to bring the valves to 3/8 stem, 1.88 if I claim 360 etc, and 2.02 as a 340 and get the runners to 163 and 72. The R/T heads also oil through the pushrods, but no problem. We got good ones with a little smaller hole and no problem. I will probably take the Duster and fix the heads and run as a 340 in SS, or a 360 in GT. Maybe I can save someone some trouble and time before I sell anything to make sure they are as good as I think they are. According to NHRA, the 396 Edlebrock/GM head and the Ford 428/Shelby/Edlebrock and any other allowed replacement head were required to do the same thing. The 360 motor with these heads made 560 hp. We found more later, but by that time we had Edlebrock heads, learned more in intakes, valve train etc. Call me or email me for more info. Jeff jefft@southlanddodge.com 888-876-1817 Tell the operator it concerns racing. Thanks

Re: New Heads for Mopar SB in SS
 

Jeff
I'm on my winter vacation from Barnett's and am doing a little 383 SS project. Not small block heads, but I was wondering if you knew if any of the B-RB heads allowed to run in place of the 906 heads have any advantage in SS trim? My guess is after they are worked they are the same but thats only a guess.
Thanks

Re: New Heads for Mopar SB in SS
 

Stewart I was told that the Stage 5 Mopar head is a legal replacement for the 906 in SS. I'm not sure if that is a certain year only for the 906. The Stage 5 must have the 2.08 intake, and the 1.74 exhaust!1111111111111 John Lang P.S. The stage 5 head is better in the ports John.

Re: New Heads for Mopar SB in SS
 

John
The early Stage 5 head 4286526 and the later Stage five 4529992 both carry the 2.08 1.74 valve package but I don't see either listed in the NHRA specs. The only head of interest is the 4532287. Believe it was a replacement head somewhere along the line and NHRA only accepts it for Super Stock, not Stock which makes me think it might be worth a look. Whatever advantage it holds to disallow it in Stock may wash out when subjected to a good Super Stock port job.
Racing next year?

Re: New Heads for Mopar SB in SS
 

Stewart, I sure hope so as far as racing goes. The doctors think they know whats wrong in the head, My body produces more spinal fluid than needed, which puts presure on the brain, which causes me to fall over and get all disorie nted. i'm just installing a new Hemi in the SS/CA car, and my C/SA RR is all set to go. Hopefully get the ok from the doctor after they did the Spinal Tap! 100% better. What happened to your Hemi project? Hope all is well, John Lang