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Forum: General Q & A

09-27-2010, 11:07 AM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

I'v been running the boat like this for two years...

I'v been running the boat like this for two years with no problems or issues. I just have low RPM of 4200. So you guys think my problem is related to my carbs not feeding enough fuel?

Forum: General Q & A

09-27-2010, 08:35 AM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

The jets are 73 front and back and power valve is...

The jets are 73 front and back and power valve is 6.5.

Forum: General Q & A

09-25-2010, 08:37 AM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

How do I find that out?

How do I find that out?

Forum: General Q & A

09-25-2010, 06:37 AM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

Carbs

This is a link to my carb
http://www.holley.com/0-80528-1.asp

Forum: General Q & A

09-24-2010, 02:05 PM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

I have a Holley 750 double pumper with 30 & 50

I have a Holley 750 double pumper with 30 & 50

Forum: General Q & A

09-24-2010, 11:59 AM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

I always kept the 750 Carbs never went to 800 or...

I always kept the 750 Carbs never went to 800 or 850.

Forum: General Q & A

09-23-2010, 08:22 AM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

My engine builder said I should have used the...

My engine builder said I should have used the Brodix hv2000 in stead of the Edelbrock RPM Performer Manifold. Would switching intake manifolds really give me an extra 800 - 1000 RPM?

Forum: General Q & A

05-23-2010, 10:30 AM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

308CC intake runner 129CC exhaust runner ...

308CC intake runner
129CC exhaust runner
Intake Valve Diameter 2.250 in.
Exhaust Valve Diameter 1.88 in.

Forum: General Q & A

05-23-2010, 09:59 AM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

Degree of Cams -not sure. Left the bottom end...

Degree of Cams -not sure. Left the bottom end untouched. Just upgraded the top end.

Forum: General Q & A

05-23-2010, 08:01 AM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

Here is a link to the cam specs: ...

Here is a link to the cam specs:

http://cranecams.com/index.php?show=browseParts&action=partSpec&partNumber=139641&lvl=2&prt=5

Forum: General Q & A

05-22-2010, 11:48 AM

Replies: 31

RPM loss on engine rebuild

Views: 4,843

Posted By gripit

RPM loss on engine rebuild

I rebuilt my 420 HP engines and noticed a RPM loss on the top end. It went from 5000 to 4600 RPM. In doing the rebuild I replaced the stock 099 GM heads to the Dart iron eagle heads and switched...

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