Throttle Body Spacer

[PlayingWithTBI]

Was never a believer myself, but happened to pick this one up on a parts truck and since we were already paying for the dyno session why not give it a try? Like I said though, it’s not the “swirl” or vortex or whatever buzzword is on the label, it’s the added plenum volume.

I'd be interested in your results. If it's close to Gramps, I'd say they work. I had a boss once who had a sign on his door "In God we trust, all others bring data!" LOL

 

[ol-Betsy]

Is anything else needed to put the spacer on? Does anything need extensions?

 

[fancyTBI]

Is anything else needed to put the spacer on? Does anything need extensions?

Some people have a hard time getting their fuel lines to connect. I have not had this issue. Most spacers come with the longer studs to bolt it to the intake. Then you’ll need two new gaskets; one between the spacer and intake manifold, the other between the spacer and the TBI.

 

[PlayingWithTBI]

A lot of times you can loosen the bolt on the bell housing holding the lines in place. Otherwise there are (or were) 1" extensions available.

 

[99xcss4]

you can also get a injector pod spacer https://www.ebay.com/itm/2562624714...+adQrb5EXsJ25aOrx4RooAsw==|tkp:Bk9SR8iHkMbjYw https://www.ebay.com/itm/2260868712...FljEjbQAeaYPjcao/yJBm4uQ==|tkp:Bk9SR8qHkMbjYw

 

[PlayingWithTBI]

you can also get a injector pod spacer https://www.ebay.com/itm/2562624714...+adQrb5EXsJ25aOrx4RooAsw==|tkp:Bk9SR8iHkMbjYw https://www.ebay.com/itm/2260868712...FljEjbQAeaYPjcao/yJBm4uQ==|tkp:Bk9SR8qHkMbjYw

That is usually used in conjunction with the 1" base spacer. The pod spacer (we also double up the fiber gaskets to get 1/4" too) raises the injectors so there is more volume for air flow into the top of the TB. There's a lot of mods which can be done to the TBI system - some work some don't do anything, depending on who you want to believe. I do know the OE 42mm TB for the SBCs needs help when you're looking for more cubes and revs.

 

[Scooterwrench]

you can also get a injector pod spacer https://www.ebay.com/itm/256262471424?itmmeta=01HWE640EZCZDTSE73N399ZZVB&hash=item3baa6eff00:g:KbsAAOSwmFJbtqbm&itmprp=enc:AQAJAAAA8K81R6PXMY6UxjnoC5v9mt/lihDIFxiKXsF7QD737sib8qGPEIK93pDO7zbgpRlrntj4XKjd8SJGS7Lm33ZcR0rPp/bAXqwzy2f7LpWUqgGFs0sRR3bFCk1oacrnj7MhsgkQUPYGOsmiSDlJrn1HYt2zBdVsuMub5mISN1j+KZSBgWMCZHsdFfjyYlyXdXhlkol01HB1WpnsImMhWSuugM4A78osEsbSPPmnLFTvgwj1Xd+akjBYSZDyJKKfRliMC7gg531DEDn3vVPx6ZTk7t8znn/holOQPlKMvXvVpw+adQrb5EXsJ25aOrx4RooAsw==|tkp:Bk9SR8iHkMbjYw https://www.ebay.com/itm/226086871269?itmmeta=01HWE640EZ96TMKARYQ6Y92EWC&hash=item34a3d3e0e5:gHAAAOSwYMRie3mk&itmprp=enc:AQAJAAAA8BCUe/0z7/9WKV+RKmjoVht37YHDW8HkBANBJjFCLVf0LuEwF2+NcRYSEuR6X3kSvHZYzYz/q1z0mqvfwFWYwrVkC4vvE/nh4x3chyDHWdUSt2g0o94kROYDMNJX8hPYl/9j0sgpiT1oHesc3eYGLmaNAj2iyV6QM4+38Gxn/I4gRf7n2/5T2cE7O0f1llCm6m8BF505IPqtY9tifDcgPUVyQb6FivfQbztw6Hnbf78BR0MbjgZDN79miiQs4kw0LYBiyQhSQD1zwpeFGr5+pYzU3qDSZjSlAjmZyNwAB1FljEjbQAeaYPjcao/yJBm4uQ==|tkp:Bk9SR8qHkMbjYw

I think this would do you more good than the manifold side spacer. Personally I would use the plastic one for its heat insulation properties.

 

[SNCTMPL]

This is what the guys at CFM Tech are selling now. And what it looks like after boring it out and putting it underneath a 50mm throttle body.

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[RDF1]

I have always just used throttle body spacers as a way to run nitrous or water/meth injection on the LS engines.

 

[Scooterwrench]

This is what the guys at CFM Tech are selling now. And what it looks like after boring it out and putting it underneath a 50mm throttle body.

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Now that I would run as long as hood clearance allows. Probably doesn't need to be that thick.