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[stock car driver]

Did you call comp again yet??

Post back and say thanks after you do.

If you don't its obvious your just wasting everyone's time on here.

Pathetic day? Life must be really bad for you... It couldnt get much better for me unless I was in Hawaii in the winter I suppose!

[Triple Nicklll]

Old Build

Old Build was Alky, spoke to Jones Brothers Cam Design. Mike thought the cam had great numbers and was real close to what he recommends. Once I pulled my paperwork on the build I found the heads are the 230CC runners. Mike thought it was possible when they ported and polished them it opened the runners up too much causing the engine to lose low end torque. We're going to pull the heads and get them flowed again to see the numbers on them.

[stock car driver]

Hard to believe he's wasting your time, being that it is your choice to view, log in, and respond. LOL Maybe you could call COMP for him as well?

I'm not sure why you get enflamed in these arguments as you do, being that you advertise with this screen name.

Certainly I've picked my share of arguments (especially back in the political days of the the tailgate section) but I'd never tie my business to this account.

Just food for thought!

Best of luck on the new motor Triple Nickill! Also, is the current motor alky or gas? You specified on the new build, but not the old.

Food for thought.... If Im not worried about it effecting my hobby (you call it business) should you be???

[dynoman14]

TriplNickl,
I think part of what you are feeling on the track is reversion in the induction system that affected greatly by the signal pulse of the 4-7 swap cam and needs to be compensated for in the headers as the cylinder coupling will be way off. It is real easy to see on the dyno idling or in the pits with the air cleaner off. Alky hates reversion more than gas because there is twice as much fuel in emulsion as there is with gas and when you put the brakes on the signal pulse the intake air speed slow and drops the emulsified fuel and turns it back to liquid alky and air...that condensate is what is bogging the engine up the straight cause I know once you pass the flag stand she probably runs like all hell breaking loose.

The 4-7 came about for drag racers, comp-elim that leave the line at 10,000rpm and don't look back. Sold to oval trackers as smoother power delivery cause it kills bottom end torque.

The cheapest alternative to turning your engine back into a torque monster like you used to have is go back to a standard camshaft and I prefer to go smaller on the .050 duration like 258-263 106 lobe sep, intake installed 100, but then go big on the rockers like 1.7-1.8 intake and 1.6 exhaust, gets the intake off the seat in a hurry and lets that alky get to boiling in the intake runners. You are looking at $300 on the cam and maybe $500 on the T&D Intake Rockers. If that combo don't pull like a mule on steroids something else is wrong.

[Triple Nicklll]

Wow

TriplNickl,
I think part of what you are feeling on the track is reversion in the induction system that affected greatly by the signal pulse of the 4-7 swap cam and needs to be compensated for in the headers as the cylinder coupling will be way off. It is real easy to see on the dyno idling or in the pits with the air cleaner off. Alky hates reversion more than gas because there is twice as much fuel in emulsion as there is with gas and when you put the brakes on the signal pulse the intake air speed slow and drops the emulsified fuel and turns it back to liquid alky and air...that condensate is what is bogging the engine up the straight cause I know once you pass the flag stand she probably runs like all hell breaking loose.

The 4-7 came about for drag racers, comp-elim that leave the line at 10,000rpm and don't look back. Sold to oval trackers as smoother power delivery cause it kills bottom end torque.

The cheapest alternative to turning your engine back into a torque monster like you used to have is go back to a standard camshaft and I prefer to go smaller on the .050 duration like 258-263 106 lobe sep, intake installed 100, but then go big on the rockers like 1.7-1.8 intake and 1.6 exhaust, gets the intake off the seat in a hurry and lets that alky get to boiling in the intake runners. You are looking at $300 on the cam and maybe $500 on the T&D Intake Rockers. If that combo don't pull like a mule on steroids something else is wrong.

Dynoman....thanks for the indepth explanation on whats going on...your exactly right sir....thanks! Once we get done with the 420 we're going to tear that motor down and that's the first thing going is the cam shaft....I will take your advice....thanks again sir!

[stockcar5]

so after 4 people told you to either change cams or call the cam company you finally decide to switch cams after a con artist tells you to..LOL!

[hpontap]

The 230+ size runner heads ( ported and polished ) you have on it are not helping anywhere but up top.
Your cam should pull to what the 23* heads will do also. It is a Comp Cams 4/7 swap and not a OWM traction control cam that you have correct? That cam should work well.
Put a set of good 210-220 runner heads on it and you will blow the tires off of it
I have a couple of 377-380's with more cam in them and running smaller heads that pull with lot bigger engines off the turns. Keep the port velocity up and you will like the engine a lot more.