Another cam question,

Presently building large cube LS1 440ci, will be an auto with T/C stall 3200, likely we will run it to 6500rpm possibly 7000 rpm. Car will be driven for enjoyment not as a daily driver.Not interested in sooky cams really interested in what some off you big cube guys are using in solid roller or hydrualic.

I would be interested in hearing any thoughts on reverse split cams for this size unit, sort off leaning towards solid for the extra power and reduced problems with valve train.

Before you all ask bore is 4.125 and stroke is 4.125 like to keep things square

Any help appreciatted.

 

I have a large solid roller cam for sale cheap if you want to try one out.

 

Depending on your head configuration / intake choice, compression, gas quality and flow numbers I would go with a VERY large hydraulic with moderate to high lift. (keep it around.600)

Decide at what rpm you want your HP peak to come in at and then stuff the largest duration cam you can fit without PtoV problems on the intake and exhaust side with LSA and advance factored in for maintaining your desired hp peak.
Cheers,
Chris

 

Personally, I htink with a 4.125" stroke, you should stay below 6500 rpm for piston speed reasons. Given that, a huge hydraulic (the MTI S1 comes to mind (244/24X I think)). Its going to be a torque monster, so enjoy the power wihtout spinning it too much.

chris

 

Thanks for the help much appreciatted.

 

The MTI S1 cam is the only hydraulic cam to ever run 9s so if ya decide to go hydraulic, I highly recommend it. Specs are 244/244 .612/.612 on a 112 LSA. You can shift it anywhere between 6400 and 7000 without changing the ET much.