Just trying to get some opinion or experience with the swap. All I know if that it puts less stress on the mains , makes the crank vibrate less, and is suppose to give more hp? My question is how much hp are we taking about? I have heard 8-10hp, then someone says that they say peak hp can go up 38hp. here are my specs;
4 bolt 454 bored .060 over
eagle crank-cast steel
eagle rods-cast
Kb hyperutetric -25cc domed pistons
390 heads which are oval and 98cc chambers and they are ported and polished.2.19/1.88 valves
harland shrap 1.8 roller rockers
weiand stealth intake
1 7/8 long tube headers
holley 3310 carb
I was planning on running the comp cam xe274, but then I saw the xe274 with 4/7 swap for less than $100 more.
I think the compression ratio is going to be somewhere around 12.5:1, so will this swap relieve some stress on the bottom end? any info would be helpful
4 bolt 454 bored .060 over
eagle crank-cast steel
eagle rods-cast
Kb hyperutetric -25cc domed pistons
390 heads which are oval and 98cc chambers and they are ported and polished.2.19/1.88 valves
harland shrap 1.8 roller rockers
weiand stealth intake
1 7/8 long tube headers
holley 3310 carb
I was planning on running the comp cam xe274, but then I saw the xe274 with 4/7 swap for less than $100 more.
I think the compression ratio is going to be somewhere around 12.5:1, so will this swap relieve some stress on the bottom end? any info would be helpful