400 Cam
Posting Guru
Joined: Jul 2007
Posts: 1,355
Likes: 1
One last thing, to compare, if you have time can you estimate my engine for me?
specs:
400 + 0.030" over = 408
stock 2v cleveland heads 2.04 In 1.66 Ex
scr: 10:1
750cfm carb
singleplane small (or standard) port manifold
large tube headers open exhaust
camshaft: XE274H (extreme energy 274 comp cam)
lift at valve: It: 0.562" Ex:0.565"
valve timming: seat to seat : IVO: 27 IVC: 67 EVO: 73 EVC : 33
0.050": IVO: 5 IVC: 45 EVO: 48 EVC : 8
Thnx Danlee
specs:
400 + 0.030" over = 408
stock 2v cleveland heads 2.04 In 1.66 Ex
scr: 10:1
750cfm carb
singleplane small (or standard) port manifold
large tube headers open exhaust
camshaft: XE274H (extreme energy 274 comp cam)
lift at valve: It: 0.562" Ex:0.565"
valve timming: seat to seat : IVO: 27 IVC: 67 EVO: 73 EVC : 33
0.050": IVO: 5 IVC: 45 EVO: 48 EVC : 8
Thnx Danlee
Posting Guru
Joined: Jul 2007
Posts: 1,355
Likes: 1
Yeah im plannning on using the weiand, I guess both dynosyms are a bit different, also those results you are giving me i get them exactly in my dyno with 1 point less is cmopression ratio (9:1) , anyways this are the result i get with dyno 2003 ( I guess this Sym is a bit on the bright side now that i see yours):
torque:
414@2000
465@4000
hp:
416@5000
And of corse the difference could also be in the fact that you can use both timmings in the camshaft part, anyways thanx alot man...
torque:
414@2000
465@4000
hp:
416@5000
And of corse the difference could also be in the fact that you can use both timmings in the camshaft part, anyways thanx alot man...
Fleet Mechanic
Joined: Oct 2003
Posts: 1,371
Likes: 10
From: Green Springs, OH
I have the K5200 I put it in about 5 years ago truck runs good but I want headers to waken it up. I had gotten the edlebrock cam that is comparabel but returned it when I found the summit cam. It is the same cam but a little better price.
Oh hey Dan lee You ran numbers for me before could you run them again using the K 5200. My engine is 400 bored .030 over edlebrock 1406, edlebrok performer dual plane intake, stock heads, pistons unknown probably 9:1. I run manifolds now but hope to get some Sandersons for it running a single 3" exhaust.
Oh hey Dan lee You ran numbers for me before could you run them again using the K 5200. My engine is 400 bored .030 over edlebrock 1406, edlebrok performer dual plane intake, stock heads, pistons unknown probably 9:1. I run manifolds now but hope to get some Sandersons for it running a single 3" exhaust.
Postmaster
Joined: Aug 2001
Posts: 4,270
Likes: 5
From: Delaware
With that setup, I get 378 ft-lbs torque@2000 RPM, and 390 ft-lbs@3500 RPM. The peak HP is 278@4000 RPM. It definitly needs headers to get the high RPM power.
What makes you think that it's 9:1 CR? Most replacement pistons are dished and produce lower CR.
What makes you think that it's 9:1 CR? Most replacement pistons are dished and produce lower CR.
Fleet Mechanic
Joined: Oct 2003
Posts: 1,371
Likes: 10
From: Green Springs, OH
Well the previous owner who told me about the motor said they had a motor shop build the motor and they did some mild performance mods to it. The cam I pulled out when I put in the summit was a high energy 268H cam it was stamped on it. He told me he blew the original 400 in the truck then they took a 351m and put a 400 crank and pistons and bored it out. So I am just assuming, I know the shop that built it was primarily a high performance shop. They did a good job since it still is goig strong 20 plus years later after some serious abuse from my friend who was the 2nd owner I am the third. The numbers you have I assume are with headers?
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Senior User
Joined: Jan 2008
Posts: 166
Likes: 0
well since your running everyone elses hp numbers could you run mine please ?
400 with mild head work, not sure what i believe mild porting and milling, bored 30 over eldebrock cam , intake, 670 cfm holley , hedman full length headers, im not sure of the pistons though..
400 with mild head work, not sure what i believe mild porting and milling, bored 30 over eldebrock cam , intake, 670 cfm holley , hedman full length headers, im not sure of the pistons though..
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