chris95lt1ta

Is the stock throttle body a twin 52 mm each opening or the whole thing? Is it safe to port it yourself? Thanks.

SS RRR

iTrader: (2)

Stock TB is 48mm. Opening for the intake is 52mm.

shbox

I thought the stock opening was 54mm.

James Montigny

iTrader: (13)

Stock TB is 48, you can port it yourself if you want to. I've seen lots done (some good, some horrible).
Used BBK and Holley TBs are pretty cheap anymore, I'd scoop one of those
up if only just to know that you will get the most out of the project.
Most come with an airfoil built in, which is nice.

The stock manifold ports are a little bigger than 52mm;
I'm pretty sure they were closer to 54, but it's been a while since I measured.

96capricemgr

iTrader: (1)

How many did you measure?

This comes up often enough I think you guys should consider maybe there were some of each.

I know at one time I had one that was 54mm but most seem to be 52mm.

speed_demon24

iTrader: (6)

The 3-4 I had were all 52mm.

boostedlt1

iTrader: (2)

just took my manifold off last night, ill go measure!

Puck

iTrader: (17)

I think my 93's were 54, but its been ages since I ported it.

I know AS&M make(made?) a 54mm that was supposed to be the largest you can run without porting.

I wouldn't be surprised if some castings were closer to 52 and others closer to 54.

chris95lt1ta

Huh. interesting. I'm going to measure mine and see I will let you know.

RamAir95TA

iTrader: (2)

chris95lt1ta

Ok thanks I haven't had the chance to measure mine

WS Sick

Yeah but what about a different one...surely not all were the same...lol

boostedlt1

iTrader: (2)

crap, i tried to post last night. guess it didn't go through...


i measured mine, it has a beveled edge on the openings, from where the bevel starts it's 54mm, but like ramair's the opening is only 52mm.


i put my ported intake on, didn't notice nearly as big of a difference going from 52 to 58 as i did from 48 to 52. but it was still noticeable

94fixerTA

iTrader: (5)

Did mine myself there's a pic of after I got done with one size. That's a Arizona Speed and Marine 58mm