pointless to put 5.3 heads on anything bigger than 346ci?
#1
TECH Apprentice
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pointless to put 5.3 heads on anything bigger than 346ci?
Just curious - wondering if my heads will be kind of worthless if I ever decided to go larger than 346 cubes? They are 62cc TEA Stage 1.5s
#4
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Ummmm 475 rwhp. Stage 2.5 5.3 heads t-rex cam 6.0 iron block Full weight car. 10.80 @ 125. With better heads it would go 10.50's and in the 500 rwhp range but for the value the 5.3 heads cant be beat!! Just make sure the heads have a good cnc or port job and the 2.00 intake and 1.57 exh valve. The stock 5.3 valve sizes wont flow what your larger cubic inch need to make power. My heads dont flow billy bad *** numbers 284 cfm @ .600 but the compression bump plus decent flow numbers make the car scream.