Summit headers and angle plug heads.
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Summit headers and angle plug heads.
Hi, all,
Is anybody out there using these headers:
http://www.summitracing.com/parts/SUM-G9003/
with angle plug heads like the L98, ZZ4, or any of their aftermarket replacements? I am planning on using these headers, and may possibly want to use L98 or ZZ4 type heads, and would like to know if anybody else has done this, and if there are any issues. Thanks,
Scott
Is anybody out there using these headers:
http://www.summitracing.com/parts/SUM-G9003/
with angle plug heads like the L98, ZZ4, or any of their aftermarket replacements? I am planning on using these headers, and may possibly want to use L98 or ZZ4 type heads, and would like to know if anybody else has done this, and if there are any issues. Thanks,
Scott
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Well, ptroxx, I played the hunch and did some research, and, apparently, D-ports and regular headers are not a good match up. You must have figured I knew that already, but I didn't. But know I do!!! Thanks, man,
Scott
Scott
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
OK, what I am looking at is the Edelbrock 60879 cylinder head. Edelbrock and Summit both call it a straight plug head, but in pictures, you can see that the plug holes have that slight angle, like the L98 heads (naturally, because they are advertised as a direct replacement for the '86-'91 aluminum Corvette heads). Is this slight angle not enough to worry about as far as interfering with headers? Is anybody running the L98 aluminum heads or these Edelbrock heads with the Summit Racing headers that I referenced earlier? How about with the patriot block-hugger headers that I am running right now? The d-shaped port is not a concern, just the spark plug clearance. Thanks,
Scott
Scott
Burning Brakes
Joined: Aug 2001
Posts: 854
Likes: 7
From: dudley ma
what about the edelbrock 60899 heads. straight plug, it's what I am running. Edelbrock lists a champion plug for these heads. I cross reference to an AC Delco. They are a bit shorter or you can go with a Accel they make a shorty plug. I run long tube headers, only one plug I do have a bit of header wrap and a heat resistant boot on plug wire.
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
My plan, as of now, is to run E-Street heads, but I'm looking for an aluminum head that has a smallish intake runner to keep velocity up at lower rpm. I am not planning on spinning the engine any faster than 5,000 rpm. Motor will be going into an '80 vette with 3.07 diff gears, and th-350 tranny with stock converter. (a 700r4 is in the works, so that needs to be factored in, too.) I need low-end torque to lean up against that steep gear, and to run efficiently at really low rpm on the highway, with the overdrive. Trying to build the engine around the car, instead of the other way around.
edit: I see you live in Dudley, that's just the next town over, maybe we should hang out! Shoot me a PM.
Scott
edit: I see you live in Dudley, that's just the next town over, maybe we should hang out! Shoot me a PM.
Scott
Last edited by scottyp99; Dec 22, 2011 at 09:19 PM.
Team Owner
Joined: Oct 2004
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From: altered state
St. Jude Donor '05
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Burning Brakes
Joined: Feb 2011
Posts: 849
Likes: 0
From: Woodland California
I have a 75 with ZZ4 heads and the Summit headers.
No problems at all.
They go on easy from under neath even with the plugs in.
The D shaped exhaust is a non issue.
Everything fits in the header flange just like it should.
Nice Lunati cam, Edelbrock Manifold, Summit Headers, true dual exhaust and a Turbo 400
I'm pushing 335hp and love the power and drive ability.
Ralph
No problems at all.
They go on easy from under neath even with the plugs in.
The D shaped exhaust is a non issue.
Everything fits in the header flange just like it should.
Nice Lunati cam, Edelbrock Manifold, Summit Headers, true dual exhaust and a Turbo 400
I'm pushing 335hp and love the power and drive ability.
Ralph
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
I have a 75 with ZZ4 heads and the Summit headers.
No problems at all.
They go on easy from under neath even with the plugs in.
The D shaped exhaust is a non issue.
Everything fits in the header flange just like it should.
Nice Lunati cam, Edelbrock Manifold, Summit Headers, true dual exhaust and a Turbo 400
I'm pushing 335hp and love the power and drive ability.
Ralph
No problems at all.
They go on easy from under neath even with the plugs in.
The D shaped exhaust is a non issue.
Everything fits in the header flange just like it should.
Nice Lunati cam, Edelbrock Manifold, Summit Headers, true dual exhaust and a Turbo 400
I'm pushing 335hp and love the power and drive ability.
Ralph
Scott
Burning Brakes
Joined: Feb 2011
Posts: 849
Likes: 0
From: Woodland California
My heads, header and intake are good to about 365hp.
And they give reasonable air flow at low and mid range.
Bigger heads fall off on the lower end because they are not efficient at the lower air speed.
Figure out how much power you want and then purchase the smallest heads that will do the job for you.
Keeping everything matched is what makes me happy.
Merry Christmas
Ralph
And they give reasonable air flow at low and mid range.
Bigger heads fall off on the lower end because they are not efficient at the lower air speed.
Figure out how much power you want and then purchase the smallest heads that will do the job for you.
Keeping everything matched is what makes me happy.
Merry Christmas
Ralph
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
My heads, header and intake are good to about 365hp.
And they give reasonable air flow at low and mid range.
Bigger heads fall off on the lower end because they are not efficient at the lower air speed.
Figure out how much power you want and then purchase the smallest heads that will do the job for you.
Keeping everything matched is what makes me happy.
Merry Christmas
Ralph
And they give reasonable air flow at low and mid range.
Bigger heads fall off on the lower end because they are not efficient at the lower air speed.
Figure out how much power you want and then purchase the smallest heads that will do the job for you.
Keeping everything matched is what makes me happy.
Merry Christmas
Ralph
Scott
Burning Brakes
Joined: Feb 2011
Posts: 849
Likes: 0
From: Woodland California
Lunati 60102 cam and lifters
Edelbrock performer Manifold
I got a good deal on an Edelbrock 750 Carb. so I'm using it.
Plus I went with a roller tipped rocker 1.5 ratio.
I've thought that a longer rocker arm might be better especially with this cam choice.
One last thing I used push rods that were .100" longer.
The stock ones worked but I got a little better geometry with the longer ones.
Check eBay for the rockers and push rods. I did well there.
Ralph
Edelbrock performer Manifold
I got a good deal on an Edelbrock 750 Carb. so I'm using it.
Plus I went with a roller tipped rocker 1.5 ratio.
I've thought that a longer rocker arm might be better especially with this cam choice.
One last thing I used push rods that were .100" longer.
The stock ones worked but I got a little better geometry with the longer ones.
Check eBay for the rockers and push rods. I did well there.
Ralph
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Lunati 60102 cam and lifters
Edelbrock performer Manifold
I got a good deal on an Edelbrock 750 Carb. so I'm using it.
Plus I went with a roller tipped rocker 1.5 ratio.
I've thought that a longer rocker arm might be better especially with this cam choice.
One last thing I used push rods that were .100" longer.
The stock ones worked but I got a little better geometry with the longer ones.
Check eBay for the rockers and push rods. I did well there.
Ralph
Edelbrock performer Manifold
I got a good deal on an Edelbrock 750 Carb. so I'm using it.
Plus I went with a roller tipped rocker 1.5 ratio.
I've thought that a longer rocker arm might be better especially with this cam choice.
One last thing I used push rods that were .100" longer.
The stock ones worked but I got a little better geometry with the longer ones.
Check eBay for the rockers and push rods. I did well there.
Ralph
Scott
Burning Brakes
Joined: Feb 2011
Posts: 849
Likes: 0
From: Woodland California
The transmission and converter came out of a 1973 3/4 ton pickup.
And I assume the rear end is "stock".
I know at 80mph it will suck you back in the seat and when it shifts into 2nd at 5000rpm is more than chirps the tires.
I think 75 is around 3000rpm.
I haven't really driven her since Oct. because it was suppose to of been painted and it's still not painted yet.
Hopefully the 1st of Jan. the process will start again.
Ralph
