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#1
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Headers
I don't really want to do headers, but with the lack of availability of 2.5" RA manifolds, I'm considering it as an option. The only other choice will be to use my stock manifolds until the 2.5" units are available.
The question is which headers will fit best with the least amount of modifications? The car is a 70 TA 4spd, stock clutch linkage. Reverse lockout already gone.
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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Ray Klemm calibrated Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear https://youtube.com/shorts/gG15nb4FWeo?feature=share |
#2
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Log manifolds, definitely no headers.
You’ll be glad you waited for the HO manifolds.
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
#3
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2X Bart
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#4
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I had a set of old Hedman long tubes on mine. The driver side cleared the z-bar assembly no problem, but the passenger side was a nightmare with the oil filter.
I had a set of Hookers that cleared the filter better.
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"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction" 1970 Trans Am RAIII 4 speed 1971 Trans Am 5.3 LM7 1977 Trans Am W72 Y82 1987 Grand National |
#5
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I'd go with Doug's headers. Only one disappointed customer so far and that was a gentleman with a 68 GS.
You'll be glad you have headers when you install the Butler IA2 engine. |
#6
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Quote:
As long as both engines have the same type of exhaust port, round or D-port. Doug’s headers have superior ground clearance along with a nice fit in most cases.
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
#7
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I have hedman 28150 headers. I have a 1970 400 dport, 4 speed car. Clutch linkage ect works fine. Has great ground clearance. New they were $300 i think. I had em ceramic coated and they have lasted well with no issues. I believe they sell a version already coated.
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1970 Formula 400 4 speed 2006 Gto. Ls2/m6 1972 Gto 455ho/th400 post coupe 1973 Grand Am 400 4 speed |
#8
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Waiting for HO manifolds here. I have some type of hooker super comps. Starter clearance blows! The dougs fit perfect on my 69 and still look awesome. I bought them 15 years ago and the car has always been garage kept. I did hear the quality went down 10 years ago. A friend of mine bought a set in 2012 or so and they look like crap but was under cover for few years before garaging.
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" Is wearing a helmet illegal" Mike Kerr 1-29-09 |
#9
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Long ago I had Hooker headers on my 72. I had to remove the oil filter mount to change the oil filter. They bottomed out enough times that they were ruined and I went back to the HO manifolds. There was a rush at 3000 rpm with the headers that was gone when I went back to the manifolds but I didn't miss them or the noise. Replaced the header gaskets many times.
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#10
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I've decided no on headers. I'm just gonna use the factory RA manifolds until I can get some 2.5" manifolds.
__________________
70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Ray Klemm calibrated Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear https://youtube.com/shorts/gG15nb4FWeo?feature=share |
The Following User Says Thank You to jhein For This Useful Post: | ||
#11
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And who knows. If my seat-of-the-pants dyno says I'm good maybe I won't change them.
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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Ray Klemm calibrated Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear https://youtube.com/shorts/gG15nb4FWeo?feature=share |
#12
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Your back drive linkage, and your reverse lights will thank you.
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather |
The Following User Says Thank You to Formulabruce For This Useful Post: | ||
#13
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True, but I am putting in a TKX as well... Still won't have reverse lockout, but I'll have lights.
__________________
70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Ray Klemm calibrated Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear https://youtube.com/shorts/gG15nb4FWeo?feature=share |
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