I think the only obstacles on a Whipple of that generation are the heat generated and it fitting under the hood.

 

I have stock redeye/SS bottom end, 2.7 IHI, pulleys, tune, 23lbs boost, 1077HP put a rod right out my block after less than 1000 miles. Results may vary but that was my experience.

 

So it sounds like that 22 psi mark is more of a hard limit for the bottom end unless I wanna build the motor, would that be fair to say?

 

Heat is the reason the 4.5l whipple wasnt super popular. If you can grab a chiller kit to keep temps stable and low it wount be a bad grab.

 

Yeah that’s the biggest thing I heard people talk about with it was the heat. Flows a lot and is super efficient but without a chiller people were running 140-160 IAT’s just while cruising at 1700rpm on the highway which is a huge no for me, the chiller would definitely be an upgrade I’d do

 

So I looked at the differences between the hellcat and demon 170 motors, and from what I can tell the only difference is the rod bearings and the main caps. Potentially might be a stupid question, but would someone be able to just replace the main caps and call it a day? Or at that point would I be looking at a new motor build essentially?

 

Tearing that far into your engine you might as well just replace the internals with billet/forged components that can take the HP you want in the end. Stronger pistons, rods and crank. Parts aren't your driving cost factor, labor is. Unless you have a shop/lift and the tools/knowledge to do it your self.

 

You're better off looking at the current GenV 3.0, it will make as much power as the 4.5, and do it more efficiently.

 

I just don’t see too many 4.5 swaps, I wanna be a little bit different in that sense. No disrespect to the 3.0 I know lots of built scat packs run them and it’s a great upgrade for our motors, the 4.5 is just a nicer option that fits my goals

 

does throwing the belt on every shift count as working? LOL.

 

Sounds like an install issue or something is bent. This is a new one for me. The good thing about the 4.5 compared to the newer 3.0 is you can rpm the 4.5 where the 3.0 is not holding up when spun fast. Not sure why so many use a 4.5 and only have 6500 rpm redline. Rev on to 6800+ and start making more power. And no these engines aren't rpm limited unless using a pulley upgraded factory blower. Physics do not bend because of a make or brand. It's a push rod motor with great cylinder heads. Rev it to 7k and make some power. Check out Steve Morris with his 392 build if you have any questions. I got a great deal on a 4.5 and am not jealous of any of the new blowers. I'll add a little meth injection and cool the charge. No worries. I don't race anyways just like to rip around every once and awhile.

 

Built block that would handle 1k+HP $7500-$10k, roughly. So for a shortblock beefed up for 1k HP plus R&R you would be in the $12k to $15k range? My current longblock build rated to 1500HP is in the end going to run me $20-$25k.

I got 4-5 quotes from shops allover the east to midwest and they were all in a similar ballpark.

 

Built block that would handle 1k+HP $7500-$10k, roughly. So for a shortblock beefed up for 1k HP plus R&R you would be in the $12k to $15k range? My current longblock build rated to 1500HP is in the end going to run me $20-$25k.

I got 4-5 quotes from shops allover the east to midwest and they were all in a similar ballpark.

Damn, sounds like I gotta put my corvette plans on hold then if I wanna achieve this goal 🤣 could I buy the 4.5 and get everything else but just run it conservatively at 900 in the meantime to save up for a built block?

 

Mopars ain't cheap.

 

So I’ve heard, but damn good motors when built right