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#1
05-06-2005, 03:15 PM
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I have a set of heads that I think came off a 1968 ram air 400.
I also have a 1974 pontiac 455 and I was wondering is there any way that I can put these heads on my engine and still run on pump gas? thanks. |
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#2
05-06-2005, 03:15 PM
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I have a set of heads that I think came off a 1968 ram air 400.
I also have a 1974 pontiac 455 and I was wondering is there any way that I can put these heads on my engine and still run on pump gas? thanks. |
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#3
05-06-2005, 03:31 PM
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yes but you will need to dish the pistons.Tom
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#4
05-06-2005, 04:17 PM
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Can I buy new pistons that are already dished?
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#5
05-06-2005, 05:37 PM
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http://kb-silvolite.com/performance....tails&P_id=197
Those pistons were designed specifically for this purpose. Best place to purchase is at www.pacificperformanceracing.com Lee
__________________
'73 T/A (sold). Low budget stock headed 8.3:1 455, 222/242 116lsa .443/.435 cam. FAST Sportsman EFI, 317rwhp/385rwtq on 87 octane. 13.12 @103.2, 1.91 60'. '67 Firebird [sold], ; 11.27 @ 119.61, 7.167 @ 96.07, with UD 280/280 (108LSA/ 109 ICL)solid cam. [1.537, 7.233 @93.61, 11.46 @ 115.4 w/ old UD 288/296 108 hydraulic cam] Feb '05 HPP, home-ported "16" D-ports, dished pistons (pump gas only), 3.42 gears, 275/60 DR's, 750DP, T2, full exhaust |
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#6
05-06-2005, 06:08 PM
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thanks.
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#7
05-07-2005, 05:17 AM
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First 1968 ram air 400 engs. used #31 D-port heads, later they used #R96A O-port heads.
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#8
05-07-2005, 10:55 AM
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I think the heads have #68 on but I'm not sure, its been a few years since I looked at them. They are just setting in my basement collecting dust. So I thought I would try and get them to work on my 455.
Does anyone know how much horsepower my 455 engine would have if I put these heads on? |
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#9
05-09-2005, 11:54 AM
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The heads have #48 on them not #68 sorry.
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#10
05-09-2005, 11:59 AM
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sell the 48's and get yourself a set of pump gas friendly heads (6x, 96, 7K3, etc, etc)
__________________
************************************* 1968 Lemans. 37,000 original miles. GTO clone. 462ci/KRE 290 heads. UltraDyne 280/288 Solid/850 Qjet by Cliff/Performer RPM/TSP 9.5" in TH400/8.5" 3.42 gears/3950# Race weight/12.58@106 at Bandimere speedway high altitude |
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#11
05-09-2005, 12:03 PM
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According this chart:
http://www.wallaceracing.com/head.htm the 48's are either RAIII or smaller chamber 350 heads. Either one would be a 69 and not a 68.
__________________
The joker in the deck keeps sending me his card. Smiling friendly, he takes me in. Then breaks my back in a game I can't win. |
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#12
05-09-2005, 05:02 PM
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I have 48s on my +060 455.
Ross dished pistons are economical.
__________________
95 Towncar that needs more TQ. Sold 2023: 12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
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#13
05-10-2005, 06:28 AM
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Half-Inch Stud, can your car run on pump gas? Also how much hp are you making?
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#14
05-10-2005, 06:37 AM
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RML - If you decide to sell the 48's, I would be interested, depending on the date code on them....
__________________
"My ol' man is a television repairman...he has an ultimate set of tools!....I can fix it..." J. Spicholi |
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#15
05-10-2005, 07:24 AM
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I'll let you know if I decided to sell them.
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