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83Z28BlackBetty
Bam-Ba-Lam
Joined: 13 Mar 2006
Posts: 2083
Location: Aloha
1983 Chevrolet Camaro Z/28
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 Posted: Mon May 12, 2014 5:07 pm Post subject: |
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| That would make it hard to bolt a mechanical pump up then... maybe get a big drill and some JB weld. No problem. |
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aaron_sK
Member
Joined: 23 Jan 2006
Posts: 8834
Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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| Posted: Mon May 12, 2014 6:31 pm Post subject: |
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| Alphius wrote: | I bolted a manual fuel pump up to an '87 TPI 1-piece RMS block with the stock cam and it worked fine. Maybe they got rid of the fuel pump lobe by '91 though. Just wanted to prove Paul wrong.  |
I forget what year the block is, but we put a mechanical pump on the L03 in James' second gen. |
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Twilightoptics
Hardcore (12sec Club)
Joined: 13 Jan 2004
Posts: 9191
Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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| Posted: Mon May 12, 2014 6:44 pm Post subject: |
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My 85 305 tpi block had the provision. Two piece rear. My 87 305 tpi didnt.
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A redline a day keeps the carbon away! |
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Alphius
Peanut
Joined: 05 Sep 2006
Posts: 2429
Location: Grand Mound
1984 Chevrolet Camaro Z/28
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| Posted: Mon May 12, 2014 7:21 pm Post subject: |
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| Twilightoptics wrote: | | My 85 305 tpi block had the provision. Two piece rear. My 87 305 tpi didnt. |
Weird. Must have been one of those things that GM was not consistent on over the years. My '87 305TPI engine definitely worked fine with a manual fuel pump. It was in an '87 T/A with a 700R4. Center bolt valve covers, roller cam, 1-piece RMS. Peanut cam. I stole the TPI off of it and put a Q-Jet on to give to my brother. The engine stamp matched the VIN on the car.
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84 Camaro Z28 - LS1/T56
85 Silverado - Low and Slow |
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Twilightoptics
Hardcore (12sec Club)
Joined: 13 Jan 2004
Posts: 9191
Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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| Posted: Mon May 12, 2014 7:23 pm Post subject: |
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I thought I remembered the peanut cam not having the lobe. Weird. Gm so consistently inconsistent.
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A redline a day keeps the carbon away! |
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chevymad
Master B
Joined: 11 Jan 2004
Posts: 5472
1987 Pontiac Formula
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| Posted: Mon May 12, 2014 7:44 pm Post subject: |
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| My LG4 has the roller cam and a factory manual pump. Odd combo. I've seen some blocks with the fuel pump boss and no pump rod hole. I've also seen some blocks without even the fuel pump boss. So I guess you could have just about anything. |
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91camaro_rs
Member
Joined: 03 Dec 2008
Posts: 1712
Location: Fox Island, Wa
1991 Chevrolet Camaro RS
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| Posted: Tue May 13, 2014 6:52 am Post subject: |
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It should have hole for a mech pump its a crate motor. Not factory 91. He wants to keep the electric pump idk why but its not my choice lol
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'91 Camaro RS 5.7 TPI- 700r4- 3.27 posi- headers- chambered exhaust- |
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Twilightoptics
Hardcore (12sec Club)
Joined: 13 Jan 2004
Posts: 9191
Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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| Posted: Tue May 13, 2014 12:49 pm Post subject: |
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I'd keep it. It works. Its in tank. I've seen guys suck through the original pump with a mechanical but you're just asking for problems not putting in a carb pickup.
Wtf get rid of TBI anyway? Throw a single plane intake on it and you're a fuel injected carb with better everything.
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A redline a day keeps the carbon away! |
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Dewey316
The Lama
Joined: 08 Jan 2004
Posts: 7295
Location: Bringing the tech
1990 Chevrolet Camaro RS
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| Posted: Tue May 13, 2014 1:33 pm Post subject: |
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Word...and I may have the right manifold for sale at some point this summer....
single plane + TBI is a pretty solid combo. None of the TBI motors will make power with their peanut cam and swirl-port heads. |
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aaron_sK
Member
Joined: 23 Jan 2006
Posts: 8834
Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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| Posted: Tue May 13, 2014 1:50 pm Post subject: |
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| Twilightoptics wrote: | | I'd keep it. It works. Its in tank. |
With everything being gasahol I'd keep the in-tank pump as well. Avoid problems like this one with a fairly new Edelbrock pump that don't seem to bother in-tank pumps.
| Twilightoptics wrote: | | Wtf get rid of TBI anyway? |
Also this. This forever.  |
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