Maverick87
Member
I would like to know if the stock motor will live with a set of vortec head. Or will there be to big of an airflow increase. I know that I will have to change chips.
Head question
- Thread starter Maverick87
- Start date
sytyguy
Moderated User
Well.......Vortec head cc is 62-66 and stock is 64-68, so CR could work out to be identical, otherwise it may go up a bit. All in all, the swap would introduce a number of improvements (improved flow, less detonation, etc.....), however, there will be a few hurdles (intake modifications, chip, etc.....).
Is it worthwhile? Depends on your goals. Lots of trucks have proven that you can go fast with stock heads/bottom end (and turbo for that matter).
Will it hurt anything? Nope.....lots of people running this combo. Remember, an engine is an airpump. And while you may need to improve the rest of your truck (exhaust, induction, etc....) to compliment those heads, they won't cause premature failure.
If you've got a set handy, can afford (time/$) the swap, and have no desire to shatter the stock engine record, I say go for it.
Hood
Is it worthwhile? Depends on your goals. Lots of trucks have proven that you can go fast with stock heads/bottom end (and turbo for that matter).
Will it hurt anything? Nope.....lots of people running this combo. Remember, an engine is an airpump. And while you may need to improve the rest of your truck (exhaust, induction, etc....) to compliment those heads, they won't cause premature failure.
If you've got a set handy, can afford (time/$) the swap, and have no desire to shatter the stock engine record, I say go for it.
Hood
Maverick87
Member
well the stock record is outa my reach tunning wise. I know that 7.0 in the 1/8 is hauling but I would like to get there. I just think that the heads would make it easier. Dont have any YET but I will start looking.
fiveoh
Enforcing traffic laws
after doing much research and using the search feature, i have found that
the vortec's are a great head, but the mod's needed to be performed, make most people shy away (like me
).the next best choice is the l35 head(which i went with) they are much better than the stockers but bolt right on. also i have found that the l35's are much harder to find/acquire.
i could not find a set in the 90-100 junk yards here in philly, but i did find one :x . almost everyone of those junkyards did have a set of vortec's though.
the vortec's are a great head, but the mod's needed to be performed, make most people shy away (like me
).the next best choice is the l35 head(which i went with) they are much better than the stockers but bolt right on. also i have found that the l35's are much harder to find/acquire.i could not find a set in the 90-100 junk yards here in philly, but i did find one :x . almost everyone of those junkyards did have a set of vortec's though.
Maverick87
Member
Do you think it was the heads that caused the motor to go south? Or did you change something else like boost pressure,cam and turn the motor harder.
dgoodhue
BuSTeD 4.3
Re: Head question
In this post, it persuaded me to skip the vortecs on a stock bottom end. I may still try it someday as I think it can be done, but at this time I am not in the postion to be saving up for a built shortblock.
http://www.syty.net/forums/showthread.php?t=12107&highlight=vortec*
L35's are found on some 92-95 4.3's. 96 up are vortec's.
Maverick87 said:
In this post, it persuaded me to skip the vortecs on a stock bottom end. I may still try it someday as I think it can be done, but at this time I am not in the postion to be saving up for a built shortblock.
http://www.syty.net/forums/showthread.php?t=12107&highlight=vortec*
L35's are found on some 92-95 4.3's. 96 up are vortec's.
DanenGraham
Big in the rear
Re: Head question
l35's are the 92 to 95 year. (some trucks even came with L35's) Then in 96+ the vortecs were made. Search
NecroWolf said:
l35's are the 92 to 95 year. (some trucks even came with L35's) Then in 96+ the vortecs were made. Search
Falco
Donating Member
Re: Head question
As the previous post said. The stock SyTy exhaust manifolds will fit to both the L35's and Vortecs. The intake will match the L35's, but needs modification to match the Vortecs. BTW, I've seen L35's with the plastic "Vortec" valve covers on them...
Later,
NecroWolf said:
As the previous post said. The stock SyTy exhaust manifolds will fit to both the L35's and Vortecs. The intake will match the L35's, but needs modification to match the Vortecs. BTW, I've seen L35's with the plastic "Vortec" valve covers on them...
Later,
supersports10
New member
Re: Head question
hmmmm now thats interesting, i too my plastic covers off my 97, and put the metal ones on, because the metal ones have more clearence for roller rockers.
ss:tup:
typhooner0073 said:
hmmmm now thats interesting, i too my plastic covers off my 97, and put the metal ones on, because the metal ones have more clearence for roller rockers.
ss:tup:
