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Corvette
C4 Forum
1988 Convertible for sunny day drives
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<blockquote data-quote="Tourmax" data-source="post: 175818" data-attributes="member: 5304"><p>If I go custom TPI, will probably look like what this gent did:</p><p></p><p>[ATTACH=full]31240[/ATTACH]</p><p>[ATTACH=full]31241[/ATTACH]</p><p></p><p>Those are 2" runners IIRC and the plenum modified to reach down to meet them. He chopped about an inch off the runners and the plenum was altered to reach down to meet them. He shortened the runners and increased plenum volume at the same time. The base was a ported accel unit, opened up to 1.875". I don't think I can open up an OEM lower that much, or I'll probably need to add some weld if I do. I won't be going mono-blade TB. I've got an ASM 52MM TB to bolt on to it and that's a twin blade TB.</p><p></p><p>He pulled 421 Hp with a prototype for this design (with full length runners and stock plenum), although no numbers on the final intake design above. The engine wasn't exactly stock though, 369 cid, AFR heads, etc. </p><p></p><p>I'm planning to do the intake, a cam and exhaust work. Hopefully, 300-350 crank is "doable" on my relatively mild setup. I'm also pro "stock look" for the TPI setup. I'd like someone to do a "second look" to actually figure out what they just saw.....</p></blockquote><p></p>
[QUOTE="Tourmax, post: 175818, member: 5304"] If I go custom TPI, will probably look like what this gent did: [ATTACH type="full"]31240[/ATTACH] [ATTACH type="full"]31241[/ATTACH] Those are 2" runners IIRC and the plenum modified to reach down to meet them. He chopped about an inch off the runners and the plenum was altered to reach down to meet them. He shortened the runners and increased plenum volume at the same time. The base was a ported accel unit, opened up to 1.875". I don't think I can open up an OEM lower that much, or I'll probably need to add some weld if I do. I won't be going mono-blade TB. I've got an ASM 52MM TB to bolt on to it and that's a twin blade TB. He pulled 421 Hp with a prototype for this design (with full length runners and stock plenum), although no numbers on the final intake design above. The engine wasn't exactly stock though, 369 cid, AFR heads, etc. I'm planning to do the intake, a cam and exhaust work. Hopefully, 300-350 crank is "doable" on my relatively mild setup. I'm also pro "stock look" for the TPI setup. I'd like someone to do a "second look" to actually figure out what they just saw..... [/QUOTE]
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Corvette
C4 Forum
1988 Convertible for sunny day drives
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