Thoughts on my engine build.
Thread Starter
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Laughing Gas
Joined: Feb 2003
Posts: 1,234
Likes: 3
From: In the woods of Oregon
Thoughts on my engine build.
I ordered my Ertel 9:1 pistons today from Brian in Texas. I got the lead from a post in these threads, thanz everbody! Good advice don't take no for a answer. The first place I called R.J. Templeton said he couldn't get them. I came back to this forum search some more and got a lead from a post by Billy Freeman "I found 400 pistons"
Now the Q's
I have a Lunati cam. Specs are,
dur=300i/310e 234i@.050/244e@.050
lift=.562"i/588"e
sep=112degs
lc=107deg intake
I plan on using 1-3/4" headers and a stealth manifold and a 850cfm carb. I also plan on installing larger ex valves and doing some mild porting. My question is what kind of head modifications do I need to perform to run this cam, and what kind of horsepower and torq should this combo make. Thanx.
Now the Q's
I have a Lunati cam. Specs are,
dur=300i/310e 234i@.050/244e@.050
lift=.562"i/588"e
sep=112degs
lc=107deg intake
I plan on using 1-3/4" headers and a stealth manifold and a 850cfm carb. I also plan on installing larger ex valves and doing some mild porting. My question is what kind of head modifications do I need to perform to run this cam, and what kind of horsepower and torq should this combo make. Thanx.
Last edited by kopfenjager; Feb 11, 2003 at 01:02 AM.
Thread Starter
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Laughing Gas
Joined: Feb 2003
Posts: 1,234
Likes: 3
From: In the woods of Oregon
Thoughts on my engine build.
Besides searching the junkyards, where can I find a pair of 2v or 4v heads? I'am looking on e-bay, but I haven't found any yet. I don't know of any aftermarket, so what are my options? I don't have much cash.Thanx
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Posting Guru
Joined: Dec 2002
Posts: 2,003
Likes: 2
From: chicago burbs
Thoughts on my engine build.
the cracked head gods did you a favor, those are prolly' the restricted dog heads http://users.abilene.com/~dkelly/hotrod/newmotor2.html
look at the cross section at the bottom of the page. look for some original cleveland 2V's without the water jacket in the exhaust port. being that you're out in the hills of oregon i don't know where to tell you to look
look at the cross section at the bottom of the page. look for some original cleveland 2V's without the water jacket in the exhaust port. being that you're out in the hills of oregon i don't know where to tell you to look
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Thread Starter
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Laughing Gas
Joined: Feb 2003
Posts: 1,234
Likes: 3
From: In the woods of Oregon
Thoughts on my engine build.
YEAH! That would me an awesome score. I have been wondering about how to do my own porting on 400 heads. My dad has all the equipment, but I realy don't have the comfort level to start grinding. Any advice would be great, unless I can get a set of heads already ported, mine are cracked and I'am looking for a new pair.Thanx
Posting Guru
Joined: Aug 2000
Posts: 2,416
Likes: 4
From: PacNW
Thoughts on my engine build.
These articles/links have been posted here several times:
Standard Abrasives DIY Porting Guide
Not Cleveland or M specific but gives good advice on head porting basics and tool requirements.
Hot Rod 400 Build
Has a couple of decent pics on the porting they did to get 380+ hp and 450+ # of tq out of a 400. You can see how much work they did on improving the exhasut flow.
The key is not to go crazy on with the grinder. Cleveland and M heads flow well right out of the box. Pocket porting, cleaning out the thermactor bumps, polishing the comb. chamber and focusing on getting better flow out of the exhaust is enough to get you significant gains.
Practicing on the cracked head is an excellent idea. Also keep an eye out on eBay for carbide burrs. They can get pretty spendy and I got a set of 6 brand new ones for about 1/10th the cost I saw anywhere else.
Standard Abrasives DIY Porting Guide
Not Cleveland or M specific but gives good advice on head porting basics and tool requirements.
Hot Rod 400 Build
Has a couple of decent pics on the porting they did to get 380+ hp and 450+ # of tq out of a 400. You can see how much work they did on improving the exhasut flow.
The key is not to go crazy on with the grinder. Cleveland and M heads flow well right out of the box. Pocket porting, cleaning out the thermactor bumps, polishing the comb. chamber and focusing on getting better flow out of the exhaust is enough to get you significant gains.
Practicing on the cracked head is an excellent idea. Also keep an eye out on eBay for carbide burrs. They can get pretty spendy and I got a set of 6 brand new ones for about 1/10th the cost I saw anywhere else.
Thread Starter
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Laughing Gas
Joined: Feb 2003
Posts: 1,234
Likes: 3
From: In the woods of Oregon
Thoughts on my engine build.
I wonder if the cracked block gods are doing me a favor now?
I got my block back and its cracked also! Well I guese a trip to the junk yards to find a 400, or I can just swap in the 302 sitting in my garage. What to do what to do. Figures. Thanx for your replies.
I got my block back and its cracked also! Well I guese a trip to the junk yards to find a 400, or I can just swap in the 302 sitting in my garage. What to do what to do. Figures. Thanx for your replies.
Elder User
Joined: Dec 2002
Posts: 639
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From: not mass
Thoughts on my engine build.
was going to suggest calling dsc motorsports in cali for a set of aussies 325 a set cleaned and fluxed i think but thats it
just out of a morbid curiosity was the engine built in 76 with a mcc casting mark and can you check its a M over a C inside another C. clevland plant is three C one inside the nextand again the next
think it was july 76 or earlier maybe october they had aproblem with michagan plant's M blocks just wondering
since it is a f series you could "bolt in" a 460 i have a bronco so i won't do it
just out of a morbid curiosity was the engine built in 76 with a mcc casting mark and can you check its a M over a C inside another C. clevland plant is three C one inside the nextand again the next
think it was july 76 or earlier maybe october they had aproblem with michagan plant's M blocks just wondering
since it is a f series you could "bolt in" a 460 i have a bronco so i won't do it