UMP motor options

[hotrod4890]

I'm in IMCA land but was thinking about trying to venture over into UMP country a little and maybe even try to run a few weeks of the Summer Nationals.

I've seen people that run 800 hp 13° 415s on down to people talk about running a 23° 377. What's everyone's opinion on a good usable combinations? Is anyone having any luck with the LS crate motor?

[dirtracerl77]

It really depends on the track. I run a UMP Mod. I have two different engine combos, both 23 degree. A 358 and a 380. Both have good heads and full roller valve train. I am down a bit of power during qualifying, but it isn't noticeable after that. This is on a 3/8 mile gumbo track. On smaller bullrings, my 358 is perfect. Having a good smooth setup is way more important then a few more hp. The UMP tire adds a ton of traction over the IMCA tire.

[hanginitout]

I see you use smaller cubic inch motors, what is the HP on those motors. Was thinking of a 383 flat top flat tappet.on a 3/8 very slick. Essentially no clay very little bite. The other is a bullring tacky. Through heats. Do think 500 hp is enough?

[Lizardracing]

WOW. Guys around this part of UMP Country are looking at 390-420ci and at least 18 degree if not 15' stuff.

[hipower17]

over half the field up our way have high dollar mullens motors

[hanginitout]

It really depends on the track. I run a UMP Mod. I have two different engine combos, both 23 degree. A 358 and a 380. Both have good heads and full roller valve train. I am down a bit of power during qualifying, but it isn't noticeable after that. This is on a 3/8 mile gumbo track. On smaller bullrings, my 358 is perfect. Having a good smooth setup is way more important then a few more hp. The UMP tire adds a ton of traction over the IMCA tire.

Any thought? About my post. On motor size?

[MasterSbilt_Racer]

An 18 degree 400ish engine will be plenty 95% of the time.

[Renegade Cust Susp]

Engines

Had a 13* 390 cu in, that made way too much most of the time. Anytime the track would blow Black it had to be toned down. Most nights on 3/8ths tracks it was on two barrels

[hanginitout]

Had a 13* 390 cu in, that made way too much most of the time. Anytime the track would blow Black it had to be toned down. Most nights on 3/8ths tracks it was on two barrels

What is the horse power in the 390, and what would think would be a good range. One track is super slick not much clay at all. The other tacky through hot laps heats. Slickness Toward end of feature. Thanks for your response

[Renegade Cust Susp]

What is the horse power in the 390, and what would think would be a good range. One track is super slick not much clay at all. The other tacky through hot laps heats. Slickness Toward end of feature. Thanks for your response

Engine is a gb2000 Brodix head with a 4/7 swap cam, we tried to tune it down with not matching intake so it’s a little smaller and on the engine dyno it made 796hp and right about 670-680lbft don’t remember exact number. In my opinion 730 is about perfect and 650ftlb I had a 421 like this that was great just about everywhere

[brad hibbard]

My Crystal ball says to look into the CT525

Brad

https://www.race-1.com

[kyleschornick23]

We have 2, 23 degree engines one is about 630hp the other is about 710hp on engine Dyno. They will both get the job done if the car is right.

[MasterSbilt_Racer]

My Crystal ball says to look into the CT525

Brad
www.race-1.com

If I raced UMP, that's where I would go for an engine.

[Lizardracing]

One can do better in power and reliability for dang close to the same money of $10k. UMP is very specific on the approved bolts ons.
525hp isn't enough around here. Especially early in the nights and early in the spring.

[JustAddDirt]

If your needing a UMP motor let me know.
I have a 7 race old 18º 396.

I am about to start listing stuff. Selling out