Heater core delete: Loop or plug?

NYSpeed Automotive
21

just to get the car running loop it, and you can mes with it later.
looks like 3/4 and 5/8th. you can find a U of that looking tho the molded hoses at the auto parts store, you might have to buy one with some other bends and shit and cut it down. Watch out fora pin hole for a plastic loop the hang it on the shelves with, cut that end off.
http://i.ehow.com/images/GlobalPhoto/Articles/4687399/92024_Full.jpg

22

when i did my swap i just plugged. i run about 160-170 cruising down the highway and about 200 max city driving. and this is with a built sbc on a 2 core radiator and stock style water pump. 165 degree tstat. single 14" electric fan. i dont see why you need to loop it unless there is already a small amount of coolant for the cooling system?

23

I run a loop on the oval track car. we dont have problems with overheating

24

SBC is different, it just dumps back in the rear of the pass head because that’s easier and cheaper for GM to run for were the heater core is on the car, and for bleeding air. You can put a nipple on both heads in the rear and Y them off the WP smokey style (moroso still makes the kit). And you lower the CC temps and knock susceptibility, if you guys wanted to improve it, if you guys wanted to improve on that.

newmen. this is a 5/8-3/4 one I think its for a astro van?
GATES 42570187
http://ls1tech.com/forums/conversions-hybrids/974096-what-radiator-hoses-body.html#post9965677

25

and

1990 Chevy Astro van has a bypass type heater control valve
Chevy 3/4" X 5/8" hose fittings. ACDELCO Part # 155543

Any GM Dealer.
: DESCRIPTION: HOSE-THRO (???)
10108509 $7.00

26

so did you make the loop yet?