5.3 Heads
10-03-2006, 06:25 PM
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5.3 Heads Is there any gain in HP if I bought a set of 5.3 Heads & had them ported, Do I stand to gain any hp. I have a set of stock 2000 heads on the car & they flowed 286 CFM on the Intake & can't remember the Exhaust,
I have heard that these heads rasie my compression, by a point. I can get these for $125 & figure another $500 to port them. What else do I have to do to these heads to run them on my car,
I have a Comp Cam 605 Intake 610 Exhaust 238/242 Duration 115 Lobe Sep
Are these worth the money & the extra money I will have to put in them with new valve springs & keepers & Pushrods & the $$$ to port them. Or would I be better off with something else?
Thanks guys.
I have heard that these heads rasie my compression, by a point. I can get these for $125 & figure another $500 to port them. What else do I have to do to these heads to run them on my car,
I have a Comp Cam 605 Intake 610 Exhaust 238/242 Duration 115 Lobe Sep
Are these worth the money & the extra money I will have to put in them with new valve springs & keepers & Pushrods & the $$$ to port them. Or would I be better off with something else?
Thanks guys.
10-03-2006, 07:16 PM
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your stock heads must be ported to flow in the 280ish range...
5.3's are a good buy... compression helps.... Call Gunnar and have him run the old CnC program on em..... cheap and effective... looking at 295 at .600 and 240ish on the exhaust.
5.3's are a good buy... compression helps.... Call Gunnar and have him run the old CnC program on em..... cheap and effective... looking at 295 at .600 and 240ish on the exhaust.
10-03-2006, 07:17 PM
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Originally Posted by Forteen3GT
your stock heads must be ported to flow in the 280ish range...
5.3's are a good buy... compression helps.... Call Gunnar and have him run the old CnC program on em..... cheap and effective... looking at 295 at .600 and 240ish on the exhaust.
5.3's are a good buy... compression helps.... Call Gunnar and have him run the old CnC program on em..... cheap and effective... looking at 295 at .600 and 240ish on the exhaust.
oh yeah... whats is the cam lift... you will need bigger valve for 5.3's to flow decent... be concerned with PTV clearance.
10-03-2006, 09:44 PM
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Originally Posted by 1bad93lx
Is there any gain in HP if I bought a set of 5.3 Heads & had them ported, Do I stand to gain any hp. I have a set of stock 2000 heads on the car & they flowed 286 CFM on the Intake & can't remember the Exhaust,
I have heard that these heads rasie my compression, by a point. I can get these for $125 & figure another $500 to port them. What else do I have to do to these heads to run them on my car,
I have a Comp Cam 605 Intake 610 Exhaust 238/242 Duration 115 Lobe Sep
Are these worth the money & the extra money I will have to put in them with new valve springs & keepers & Pushrods & the $$$ to port them. Or would I be better off with something else?
Thanks guys.
I have heard that these heads rasie my compression, by a point. I can get these for $125 & figure another $500 to port them. What else do I have to do to these heads to run them on my car,
I have a Comp Cam 605 Intake 610 Exhaust 238/242 Duration 115 Lobe Sep
Are these worth the money & the extra money I will have to put in them with new valve springs & keepers & Pushrods & the $$$ to port them. Or would I be better off with something else?
Thanks guys.
10-03-2006, 09:47 PM
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Originally Posted by 1bad93lx
Is there any gain in HP if I bought a set of 5.3 Heads & had them ported, Do I stand to gain any hp. I have a set of stock 2000 heads on the car & they flowed 286 CFM on the Intake & can't remember the Exhaust,
I have heard that these heads rasie my compression, by a point. I can get these for $125 & figure another $500 to port them. What else do I have to do to these heads to run them on my car,
I have a Comp Cam 605 Intake 610 Exhaust 238/242 Duration 115 Lobe Sep
Are these worth the money & the extra money I will have to put in them with new valve springs & keepers & Pushrods & the $$$ to port them. Or would I be better off with something else?
Thanks guys.
I have heard that these heads rasie my compression, by a point. I can get these for $125 & figure another $500 to port them. What else do I have to do to these heads to run them on my car,
I have a Comp Cam 605 Intake 610 Exhaust 238/242 Duration 115 Lobe Sep
Are these worth the money & the extra money I will have to put in them with new valve springs & keepers & Pushrods & the $$$ to port them. Or would I be better off with something else?
Thanks guys.