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#1
12-01-2020, 11:24 AM
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Aluminum Heads
I’m doing a 455 Street build and looking for advice on which out of the box heads members on here prefer/recommend.
Edelbrock 87cc d port Or KRE 85cc d port |
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#2
12-01-2020, 11:33 AM
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I am running the as cast KRE D ports on my +.030 455. I've been running these since summer of 2016. The only issue I've had with the swap was a rocker arm nut backing off on the set of comp magnum roller tip rockers I re-used from the iron heads I replaced. Went to a set of HS rockers with poly locks and the car has been dead reliable since.
I bolted the heads on, as received directly from Kauffman Racing.
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-Jason 1969 Pontiac Firebird |
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#3
12-01-2020, 11:53 AM
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Only complaints I've seen, and this is whether it matters to you or not.
Edlebrocks use helicoils in the bolt holes for more strength and KRE is just tapped aluminum. Not a deal breaker in my eyes but it bothers some people. Been a while since I've seen a set of KRE's though, so that issue may have changed..... |
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#4
12-01-2020, 12:37 PM
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In regards to running out of the box D ports I would go with Edelbrock.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#5
12-01-2020, 01:58 PM
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Do not use the Edelbrocks "OUT OF THE BOX" The valve guides are very likely to tight. At least have a shop check them. This hopefully could save issues later.
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#6
12-01-2020, 03:09 PM
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Quote:
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears '69 LeMans Vert, 350, #47 heads: Non-running project |
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#7
12-01-2020, 03:45 PM
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Im running out of the box edelbrock 72cc round ports. I had Butler set them up for the propper valve lift for my engine (.618/.623). Overall I'm very happy with the heads
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1967 GTO, 432 (428+.030), 4-bolt mains, factory Nodular crank, scat rods, icon dished pistons, Lunati HR 243/251@.050, .618/.622 lift, Edelbrock 72cc round port heads, 10.5:1, offy 2-4 intake, Edelbrock 650cfm carbs, Super T10 trans (2.64 first), BOP 10 bolt w/ Eaton posi and 3.36 gears |
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#8
12-01-2020, 10:16 PM
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Speed master out of the box. There dead on.
GT |
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#9
12-01-2020, 11:41 PM
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I used a set of out of the box KRE's in my '65 GTO, went a best of 7.15 in the 1/8 on 87 octane gas. Had no issues with them at all.
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1999 WS6 Formula, 1 of 175 1967 GTO Linden Green 4 spd, A/C, survivor 1967 Lemans convt 1967 Firebird 400 bench seat, deluxe interior, auto 1965 GTO 462, KRE unported D-port heads, Bullet 234/244 cam, th400, tight 10" converter, 3.73 gears, 87 octane, 3440 lbs. empty,1.59 60ft, 7.159@95.33 (1/8), a real daily driver, been totaled, rolled 3 times, hit a tree airborne. 1961 Catalina 2 door htp 1960 Ventura 4 door htp wife's car 1960 B'ville 2 door htp 1960 Catalina Wagon wife's car too |
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#10
12-02-2020, 10:52 PM
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Thanks to all that replied, all good info. More responses are welcomed.
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#11
12-03-2020, 01:20 AM
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Originally put 87 cc round port out of the box edelbrocks on my 467 and ran them hard for 15 years. No problems at all. Last time around had Butler do some porting with other engine mods (45 iron block) and have been real happy still.
__________________
 1967 GTO, 467 roller motor, e heads ported, tremec T56 magnum 6 speed and 9" done. EZ EFI 2.0 with FAST dual sync distributor and separate nitrous system done. Track is at 4300 ft elevation. so far a best of 11.95@116. Suspension now getting dialed in...tubular front a arms with dual adjustable coil overs HR Parts n stuff rear bar and whole car lowered 3 inches.. |
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#12
12-03-2020, 05:02 AM
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Lots of variables, but our club dyno days seems to show the as-cast D-port Edelbrocks making a little more horsepower than the Kaufman's. We also saw that stepping up to even the first level of porting with either head really kicks up the horsepower and levels the playing field between the two where it's more of a coin flip on which head comes out on top.
__________________
Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon in progress. |
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#13
12-03-2020, 09:13 AM
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I put out of the box Edelbrock 72cc D ports on my 400 w/ a VooDoo 703 & RA manifolds, very happy with them, no issues at all.
__________________
 65 Tempest, 400, TH400 86 Fiero SE 2.8 |
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#14
12-03-2020, 09:12 PM
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When I thought about aftermarket aluminum heads the only one available were E-heads. I would have needed a new set of headers at 3-4 times the cost of the ones I already had. So when KRE D ports arrived I jumped. Now, good exhaust manifolds for either are about the same. If I ever do another I would consider the E's or Speedmaster (If they can be had).
__________________
Frank M. 75 Firebird 68 Firebird 400 RAIII 66 Chevy II 461 Pontiac in AZ |
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