CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

What radiator with electric fans for 5.3 swap?

To address the question about electric fans.... It depends how you use the truck. If it's a street, trail, hunting rig than a mechanical fan is good and simple. Once you start working the truck hard without airflow, meaning at a low rpm without moving, it will build up heat faster than the clutch fan can cool down. The clutch fan works well at cooling a hot running motor, but it's normally pulling a grade or some other function at over idle RPM. The electric fans will pull as much air as a clutch fan would with higher RPM, but it will do it all the time, even at idle.

Sometimes when you are stuck crawling on an obstacle, with the engine grunting away for several minutes or more, but not cracking more than 2,000rpm, damn thing build heat like ya wouldn't believe.
 
Hey Metal, are you in Anaheim or some other "Disneyland"?
RPM motors is in Santa Clarita and they have a chassis dyno. They did the tuning on my '68 and it turned out great.
 
Hey Metal, are you in Anaheim or some other "Disneyland"?
RPM motors is in Santa Clarita and they have a chassis dyno. They did the tuning on my '68 and it turned out great.

I'm actually in Laguna beach CA and my truck is in garden grove at my parents house. I use to work at Disneyland and everyone knows where it's at.
 
Thanks k85 for giving a place to tune. I was looking for one. I heard if you romp on the gas and get off real quick while wheelin the engine could stall and needs a proper tune.
 
I couldn't be happier with my 68. BD Engines did the harness mods and flashed the computer. I requested that he leave the MAF sensor because I always wanted the option to use it. He thought otherwise. Anyway, later on I had it dyno and street tuned by RPM and I wanted to reuse the MAF. Glad I didn't delete that wire. Truck runs foking great!
 
Awsome, I'm pumped now and Can't wait!! What did you do for fuel? Did you use the stock tank? Did you used a inline pump?
 
Switched to a TBI blazer tank 87-91 and put a TPI camaro ACDelco pump in. You'll need some O-ring to AN adapters for the sending unit lines too. I should have all that if you search my name and EFI or FAST for the thread title. Or someone else will chime in shortly.
 
Cool, thanks for clearing that up. I was searching all over.
 
Hey @rhinoblzr
I'm looking over the upper hose and aluminum fitting you have listed. Did other people say this will work? The fitting OD is 1.5" but the hose is listed as 1 5/16".
 
Summit said it would work and it was on the reps rig. I suppose he could be wrong. I'll check real quick when it shows up.
 
Top Bottom