| [GMCnet] Howell/Edelbrock combo [message #105250] |
Sat, 06 November 2010 13:51  |
Gary Worobec
Messages: 867
Registered: May 2005
Karma:
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Senior Member |
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Hi,
Is anyone using the Howell TBI with a 455 Edelbrock Performer manifold (Its the one they recommend for street/RV). If so, is the combo working/performance and how much did you need to raise your hatch? I have the Howell FI from the last group buy.(not installed yet)
Had to get towed home from near Qualcomm last Sunday after the Chargers game. Maybe a crack in the intake manifold. Started while in a long hot line at the stadium to get out then started dying. Thought it might be vapor lock but then when it all cooled down just major backfiring through the tailpipe and the carb. Managed to get a few miles. Changed the fuel filter at the Walmart parking lot, lots of fuel pressure. Just would start and run but at the touch of the throttle would die, then backfire. Then just would not run.
I had noticed just a slight decrease in vacuum on the Las Vegas rally trip but it all ran well however both runs to Las Vegas were in the cold and even the run down to Qualcomm was very early in the morning and cold but the engine ran great so maybe the crack opened up during the long idle period getting out of Qualcomm on Sunday.
Carb is off. It looks like a crack across the secondary drivers side intake running left to right. Very tough to tell. I'm committed to now putting the FI on. Need to decide on the manifold though. Price is not a real consideration. After hearing Mondello at Las Vegas when he said that in the stock manifold the gas goes down.....up.....and then back down maybe the Edelbrock makes sense/cents.
Any thoughts greatly welcome.
Thanks
Gary and Joanne Worobec
1973 GMC Glacier
Anza, CA
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