Supra Forums banner
1 - 9 of 9 Posts

·
Registered
Joined
·
1,927 Posts
Discussion Starter · #1 ·
My IS300 has a T66 with all supporting mods and 264 cams. I am upgrading to a SP77 and am going to ditch the cast manifold for sure, and from the little research i have done the next major restrictions are the head/intake. My questions are:

Which one is the bigger restriction? I assume it would be the intake and TB?

How does a ported NA head flow compared to a TT head?

What aftermarket intakes and TBs are available?

Any info would help. Thanks.

Travis
 

·
Cheifbootknocka
Joined
·
2,117 Posts
Allan"Defiant7M"Sterling said:
I would say the head is the most restrictive.
I agree, I have seen a few high HP rides with the NA intake manifold.
With that said I would still fab up a new IM with a billet 75mm TB or larger.
 

·
Registered
Joined
·
1,670 Posts
on a TRD flow bench, the na head flowed more volume then the tt head. TB is the major restriction.
 
1 - 9 of 9 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top